task_name
string | initial_board
string | solution
string | title
string | rules
string | visual_elements
string | rows
int64 | cols
int64 | initial_observation
string | description
string | task_type
string | data_source
string | difficulty
string | hint
string | hodoku_difficulty
string | puzzle_id
string |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
normal_sudoku_1295
|
9....8.6.62814...97..9...8.43..9....1.9....278.2....962...8.9..3867592..59....6.8
|
913528764628147539745963182437296815169835427852471396271684953386759241594312678
|
normal_sudoku_1295
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
9 . . . . 8 . 6 .
6 2 8 1 4 . . . 9
7 . . 9 . . . 8 .
4 3 . . 9 . . . .
1 . 9 . . . . 2 7
8 . 2 . . . . 9 6
2 . . . 8 . 9 . .
3 8 6 7 5 9 2 . .
5 9 . . . . 6 . 8
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
913528764628147539745963182437296815169835427852471396271684953386759241594312678 #1 Easy (256)
Hidden Single: r5c2=6
Naked Single: r5c5=3
Hidden Single: r3c5=6
Hidden Single: r6c7=3
Hidden Single: r5c7=4
Naked Single: r5c6=5
Full House: r5c4=8
Naked Single: r6c4=4
Hidden Single: r4c7=8
Hidden Single: r1c4=5
Hidden Single: r6c2=5
Full House: r4c3=7
Hidden Single: r3c3=5
Naked Single: r3c7=1
Naked Single: r1c7=7
Full House: r2c7=5
Naked Single: r3c2=4
Naked Single: r1c5=2
Naked Single: r2c8=3
Full House: r2c6=7
Full House: r3c6=3
Full House: r3c9=2
Full House: r1c9=4
Naked Single: r1c2=1
Full House: r1c3=3
Full House: r7c2=7
Naked Single: r9c5=1
Full House: r6c5=7
Full House: r6c6=1
Naked Single: r8c9=1
Full House: r8c8=4
Naked Single: r9c3=4
Full House: r7c3=1
Naked Single: r4c9=5
Full House: r4c8=1
Full House: r7c9=3
Naked Single: r7c8=5
Full House: r9c8=7
Naked Single: r9c6=2
Full House: r9c4=3
Naked Single: r7c4=6
Full House: r4c4=2
Full House: r4c6=6
Full House: r7c6=4
|
easy
| null |
normal_sudoku_1371
|
2.7.39......617.2..19.28.73..487.26.8...5.7.4.7..6..8.4..79..5272..4...693..8.1.7
|
287439615543617928619528473154873269896152734372964581468791352721345896935286147
|
normal_sudoku_1371
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
2 . 7 . 3 9 . . .
. . . 6 1 7 . 2 .
. 1 9 . 2 8 . 7 3
. . 4 8 7 . 2 6 .
8 . . . 5 . 7 . 4
. 7 . . 6 . . 8 .
4 . . 7 9 . . 5 2
7 2 . . 4 . . . 6
9 3 . . 8 . 1 . 7
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
287439615543617928619528473154873269896152734372964581468791352721345896935286147 #1 Medium (324)
Naked Single: r9c8=4
Naked Single: r1c8=1
Hidden Single: r6c6=4
Hidden Single: r3c1=6
Hidden Single: r1c7=6
Locked Candidates Type 1 (Pointing): 5 in b2 => r89c4<>5
Naked Single: r9c4=2
Hidden Single: r6c3=2
Hidden Single: r5c6=2
Locked Candidates Type 1 (Pointing): 1 in b7 => r5c3<>1
Hidden Single: r5c4=1
Naked Single: r4c6=3
Full House: r6c4=9
Naked Single: r8c4=3
Naked Single: r8c8=9
Full House: r5c8=3
Naked Single: r8c7=8
Full House: r7c7=3
Naked Single: r5c3=6
Full House: r5c2=9
Naked Single: r6c7=5
Naked Single: r9c3=5
Full House: r9c6=6
Naked Single: r4c2=5
Naked Single: r3c7=4
Full House: r2c7=9
Full House: r3c4=5
Full House: r1c4=4
Naked Single: r6c9=1
Full House: r4c9=9
Full House: r4c1=1
Full House: r6c1=3
Full House: r2c1=5
Naked Single: r8c3=1
Full House: r8c6=5
Full House: r7c6=1
Naked Single: r1c2=8
Full House: r1c9=5
Full House: r2c9=8
Naked Single: r7c3=8
Full House: r2c3=3
Full House: r2c2=4
Full House: r7c2=6
|
medium
| null |
normal_sudoku_790
|
56..381.........93....6....83..7.5..9..1.3......8.532...4....311....7.6.68.3..7.4
|
567938142248751693391264875832476519975123486416895327754689231123547968689312754
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
5 6 . . 3 8 1 . .
. . . . . . . 9 3
. . . . 6 . . . .
8 3 . . 7 . 5 . .
9 . . 1 . 3 . . .
. . . 8 . 5 3 2 .
. . 4 . . . . 3 1
1 . . . . 7 . 6 .
6 8 . 3 . . 7 . 4
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
567938142248751693391264875832476519975123486416895327754689231123547968689312754 #1 Easy (284)
Naked Single: r9c8=5
Hidden Single: r2c7=6
Hidden Single: r4c8=1
Hidden Single: r3c1=3
Hidden Single: r8c3=3
Hidden Single: r3c9=5
Hidden Single: r2c3=8
Hidden Single: r5c3=5
Hidden Single: r5c9=6
Naked Single: r4c9=9
Naked Single: r6c9=7
Naked Single: r1c9=2
Full House: r8c9=8
Naked Single: r6c1=4
Naked Single: r6c2=1
Naked Single: r6c5=9
Full House: r6c3=6
Naked Single: r4c3=2
Full House: r5c2=7
Naked Single: r9c3=9
Naked Single: r1c3=7
Full House: r3c3=1
Naked Single: r1c8=4
Full House: r1c4=9
Naked Single: r2c1=2
Full House: r7c1=7
Naked Single: r3c7=8
Full House: r3c8=7
Full House: r5c8=8
Full House: r5c7=4
Full House: r5c5=2
Naked Single: r2c2=4
Full House: r3c2=9
Naked Single: r9c5=1
Full House: r9c6=2
Naked Single: r2c6=1
Naked Single: r2c5=5
Full House: r2c4=7
Naked Single: r3c6=4
Full House: r3c4=2
Naked Single: r7c5=8
Full House: r8c5=4
Naked Single: r4c6=6
Full House: r4c4=4
Full House: r7c6=9
Naked Single: r8c4=5
Full House: r7c4=6
Naked Single: r7c7=2
Full House: r7c2=5
Full House: r8c2=2
Full House: r8c7=9
|
easy
|
Basic 9x9 Sudoku 790
|
normal_sudoku_3738
|
..8159..4.4...3.5....2.48917..6......1.3.5..7.869.7..58...96.2..9...1..8..7.3....
|
628159374149783256573264891735618942914325687286947135851496723392571468467832519
|
normal_sudoku_3738
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 8 1 5 9 . . 4
. 4 . . . 3 . 5 .
. . . 2 . 4 8 9 1
7 . . 6 . . . . .
. 1 . 3 . 5 . . 7
. 8 6 9 . 7 . . 5
8 . . . 9 6 . 2 .
. 9 . . . 1 . . 8
. . 7 . 3 . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
628159374149783256573264891735618942914325687286947135851496723392571468467832519 #1 Medium (382)
Naked Single: r7c9=3
Naked Single: r7c2=5
Hidden Single: r4c3=5
Naked Single: r3c3=3
Hidden Single: r3c1=5
Hidden Single: r4c2=3
Hidden Single: r8c1=3
Locked Candidates Type 1 (Pointing): 9 in b4 => r5c7<>9
Locked Candidates Type 1 (Pointing): 4 in b5 => r8c5<>4
Locked Candidates Type 1 (Pointing): 6 in b7 => r9c789<>6
Naked Single: r9c9=9
Naked Single: r4c9=2
Full House: r2c9=6
Naked Single: r4c6=8
Full House: r9c6=2
Naked Single: r8c5=7
Naked Single: r9c2=6
Naked Single: r2c5=8
Naked Single: r3c5=6
Full House: r3c2=7
Full House: r2c4=7
Full House: r1c2=2
Naked Single: r7c4=4
Naked Single: r2c7=2
Naked Single: r1c1=6
Naked Single: r7c3=1
Full House: r7c7=7
Naked Single: r8c4=5
Full House: r9c4=8
Naked Single: r2c3=9
Full House: r2c1=1
Naked Single: r9c1=4
Full House: r8c3=2
Full House: r5c3=4
Naked Single: r1c7=3
Full House: r1c8=7
Naked Single: r6c1=2
Full House: r5c1=9
Naked Single: r9c8=1
Full House: r9c7=5
Naked Single: r5c5=2
Naked Single: r5c7=6
Full House: r5c8=8
Naked Single: r4c8=4
Naked Single: r8c7=4
Full House: r8c8=6
Full House: r6c8=3
Naked Single: r4c5=1
Full House: r4c7=9
Full House: r6c7=1
Full House: r6c5=4
|
medium
| null |
normal_sudoku_2806
|
.6...734..4.5...272..4.36.1..6.421.882...543..1.9...7............387.....8...17.3
|
169287345348516927275493681936742158827165439514938276751329864693874512482651793
|
normal_sudoku_2806
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 6 . . . 7 3 4 .
. 4 . 5 . . . 2 7
2 . . 4 . 3 6 . 1
. . 6 . 4 2 1 . 8
8 2 . . . 5 4 3 .
. 1 . 9 . . . 7 .
. . . . . . . . .
. . 3 8 7 . . . .
. 8 . . . 1 7 . 3
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
169287345348516927275493681936742158827165439514938276751329864693874512482651793 #1 Easy (282)
Hidden Single: r2c1=3
Hidden Single: r4c2=3
Naked Single: r4c4=7
Hidden Single: r6c5=3
Hidden Single: r7c4=3
Hidden Single: r7c1=7
Hidden Single: r5c3=7
Hidden Single: r6c6=8
Hidden Single: r3c2=7
Hidden Single: r5c9=9
Naked Single: r1c9=5
Naked Single: r4c8=5
Full House: r4c1=9
Naked Single: r6c7=2
Full House: r6c9=6
Naked Single: r1c1=1
Naked Single: r1c4=2
Naked Single: r9c4=6
Full House: r5c4=1
Full House: r5c5=6
Naked Single: r9c8=9
Naked Single: r3c8=8
Full House: r2c7=9
Naked Single: r8c7=5
Full House: r7c7=8
Naked Single: r3c5=9
Full House: r3c3=5
Naked Single: r2c3=8
Full House: r1c3=9
Full House: r1c5=8
Naked Single: r2c6=6
Full House: r2c5=1
Naked Single: r8c2=9
Full House: r7c2=5
Naked Single: r6c3=4
Full House: r6c1=5
Naked Single: r8c6=4
Full House: r7c6=9
Naked Single: r7c5=2
Full House: r9c5=5
Naked Single: r9c1=4
Full House: r9c3=2
Full House: r8c1=6
Full House: r7c3=1
Naked Single: r8c9=2
Full House: r7c9=4
Full House: r8c8=1
Full House: r7c8=6
|
easy
| null |
normal_sudoku_2071
|
...125..38.1...57...9......936..4................1..67..2.73.9.64.............62.
|
467125983821936574359847216936784152175362849284519367512673498648291735793458621
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . 1 2 5 . . 3
8 . 1 . . . 5 7 .
. . 9 . . . . . .
9 3 6 . . 4 . . .
. . . . . . . . .
. . . . 1 . . 6 7
. . 2 . 7 3 . 9 .
6 4 . . . . . . .
. . . . . . 6 2 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
467125983821936574359847216936784152175362849284519367512673498648291735793458621 #1 Easy (318)
Hidden Single: r3c1=3
Hidden Single: r4c4=7
Hidden Single: r1c7=9
Hidden Single: r9c2=9
Hidden Single: r1c2=6
Naked Single: r2c2=2
Hidden Single: r7c4=6
Hidden Single: r8c7=7
Hidden Single: r9c3=3
Hidden Single: r3c2=5
Naked Single: r6c2=8
Naked Single: r7c2=1
Full House: r5c2=7
Naked Single: r7c1=5
Naked Single: r8c3=8
Full House: r9c1=7
Naked Single: r1c1=4
Full House: r1c3=7
Full House: r1c8=8
Naked Single: r6c1=2
Full House: r5c1=1
Naked Single: r6c6=9
Naked Single: r2c6=6
Naked Single: r2c9=4
Naked Single: r3c8=1
Naked Single: r7c9=8
Full House: r7c7=4
Naked Single: r3c7=2
Full House: r3c9=6
Naked Single: r4c8=5
Naked Single: r6c7=3
Naked Single: r4c5=8
Naked Single: r8c8=3
Full House: r5c8=4
Naked Single: r5c7=8
Full House: r4c7=1
Full House: r4c9=2
Full House: r5c9=9
Naked Single: r6c4=5
Full House: r6c3=4
Full House: r5c3=5
Naked Single: r3c5=4
Naked Single: r5c6=2
Naked Single: r3c4=8
Full House: r3c6=7
Naked Single: r9c5=5
Naked Single: r5c4=3
Full House: r5c5=6
Naked Single: r8c6=1
Full House: r9c6=8
Naked Single: r9c4=4
Full House: r9c9=1
Full House: r8c9=5
Naked Single: r8c5=9
Full House: r2c5=3
Full House: r2c4=9
Full House: r8c4=2
|
easy
|
Basic 9x9 Sudoku 2071
|
normal_sudoku_5497
|
.465..872...7.369.5...8.31.1...9.528.53...9.7...4..1...8..5.2399.2...451415.3.786
|
346519872821743695579286314164397528253861947798425163687154239932678451415932786
|
normal_sudoku_5497
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 4 6 5 . . 8 7 2
. . . 7 . 3 6 9 .
5 . . . 8 . 3 1 .
1 . . . 9 . 5 2 8
. 5 3 . . . 9 . 7
. . . 4 . . 1 . .
. 8 . . 5 . 2 3 9
9 . 2 . . . 4 5 1
4 1 5 . 3 . 7 8 6
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
346519872821743695579286314164397528253861947798425163687154239932678451415932786 #1 Easy (156)
Naked Single: r3c9=4
Full House: r2c9=5
Full House: r6c9=3
Naked Single: r1c5=1
Naked Single: r6c8=6
Full House: r5c8=4
Naked Single: r1c1=3
Full House: r1c6=9
Naked Single: r2c2=2
Naked Single: r7c3=7
Naked Single: r9c6=2
Full House: r9c4=9
Naked Single: r2c1=8
Naked Single: r2c5=4
Full House: r2c3=1
Naked Single: r3c3=9
Full House: r3c2=7
Naked Single: r4c3=4
Full House: r6c3=8
Naked Single: r7c1=6
Full House: r8c2=3
Naked Single: r3c6=6
Full House: r3c4=2
Naked Single: r4c2=6
Full House: r6c2=9
Naked Single: r5c1=2
Full House: r6c1=7
Naked Single: r7c4=1
Full House: r7c6=4
Naked Single: r4c6=7
Full House: r4c4=3
Naked Single: r5c5=6
Naked Single: r6c5=2
Full House: r6c6=5
Full House: r8c5=7
Naked Single: r8c6=8
Full House: r5c6=1
Full House: r5c4=8
Full House: r8c4=6
|
easy
| null |
normal_sudoku_1916
|
..2.951371..327...5374.....3.....7.9.5...83....1..36..816759423..3.....6.2563.871
|
462895137198327564537416298384562719659178342271943685816759423743281956925634871
|
normal_sudoku_1916
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 2 . 9 5 1 3 7
1 . . 3 2 7 . . .
5 3 7 4 . . . . .
3 . . . . . 7 . 9
. 5 . . . 8 3 . .
. . 1 . . 3 6 . .
8 1 6 7 5 9 4 2 3
. . 3 . . . . . 6
. 2 5 6 3 . 8 7 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
462895137198327564537416298384562719659178342271943685816759423743281956925634871 #1 Easy (210)
Naked Single: r1c4=8
Naked Single: r9c6=4
Full House: r9c1=9
Hidden Single: r3c7=2
Naked Single: r3c9=8
Hidden Single: r8c5=8
Hidden Single: r3c8=9
Naked Single: r2c7=5
Full House: r8c7=9
Full House: r8c8=5
Naked Single: r2c9=4
Full House: r2c8=6
Naked Single: r5c9=2
Full House: r6c9=5
Hidden Single: r4c4=5
Hidden Single: r6c1=2
Naked Single: r6c4=9
Naked Single: r5c4=1
Full House: r8c4=2
Full House: r8c6=1
Naked Single: r5c8=4
Naked Single: r3c6=6
Full House: r3c5=1
Full House: r4c6=2
Naked Single: r5c3=9
Naked Single: r6c8=8
Full House: r4c8=1
Naked Single: r2c3=8
Full House: r2c2=9
Full House: r4c3=4
Naked Single: r4c5=6
Full House: r4c2=8
Naked Single: r6c2=7
Full House: r5c1=6
Full House: r5c5=7
Full House: r6c5=4
Naked Single: r8c2=4
Full House: r1c2=6
Full House: r1c1=4
Full House: r8c1=7
|
easy
| null |
normal_sudoku_814
|
.4.98....2.7..4......21.4...9...28...7...89.3..539.....2...97....4861.9......5.1.
|
341987526287654139569213478493572861672148953815396247126439785754861392938725614
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 4 . 9 8 . . . .
2 . 7 . . 4 . . .
. . . 2 1 . 4 . .
. 9 . . . 2 8 . .
. 7 . . . 8 9 . 3
. . 5 3 9 . . . .
. 2 . . . 9 7 . .
. . 4 8 6 1 . 9 .
. . . . . 5 . 1 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
341987526287654139569213478493572861672148953815396247126439785754861392938725614 #1 Medium (348)
Naked Single: r7c4=4
Naked Single: r7c5=3
Naked Single: r9c4=7
Full House: r9c5=2
Naked Single: r2c5=5
Naked Single: r2c4=6
Naked Single: r5c5=4
Full House: r4c5=7
Naked Single: r6c6=6
Hidden Single: r5c3=2
Hidden Single: r8c1=7
Hidden Single: r2c9=9
Hidden Single: r9c9=4
Locked Candidates Type 1 (Pointing): 3 in b9 => r12c7<>3
Naked Single: r2c7=1
Naked Single: r6c7=2
Hidden Single: r6c2=1
Naked Single: r5c1=6
Naked Single: r6c9=7
Naked Single: r4c3=3
Naked Single: r5c8=5
Full House: r5c4=1
Full House: r4c4=5
Naked Single: r6c8=4
Full House: r6c1=8
Full House: r4c1=4
Naked Single: r4c8=6
Full House: r4c9=1
Naked Single: r7c8=8
Naked Single: r2c8=3
Full House: r2c2=8
Naked Single: r3c8=7
Full House: r1c8=2
Naked Single: r3c6=3
Full House: r1c6=7
Hidden Single: r8c9=2
Hidden Single: r3c9=8
Hidden Single: r9c3=8
Hidden Single: r1c1=3
Naked Single: r9c1=9
Naked Single: r3c1=5
Full House: r7c1=1
Naked Single: r3c2=6
Full House: r3c3=9
Full House: r1c3=1
Full House: r7c3=6
Full House: r7c9=5
Full House: r1c9=6
Full House: r1c7=5
Naked Single: r9c2=3
Full House: r8c2=5
Full House: r8c7=3
Full House: r9c7=6
|
medium
|
Basic 9x9 Sudoku 814
|
normal_sudoku_1029
|
.592...1....5....6.73.8.95..45.978.....15..7..6.8.2..5536..8..7798.2.56.2147653..
|
459236718821579436673481952145697823982153674367842195536918247798324561214765389
|
normal_sudoku_1029
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 5 9 2 . . . 1 .
. . . 5 . . . . 6
. 7 3 . 8 . 9 5 .
. 4 5 . 9 7 8 . .
. . . 1 5 . . 7 .
. 6 . 8 . 2 . . 5
5 3 6 . . 8 . . 7
7 9 8 . 2 . 5 6 .
2 1 4 7 6 5 3 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
459236718821579436673481952145697823982153674367842195536918247798324561214765389 #1 Easy (180)
Naked Single: r5c3=2
Naked Single: r2c3=1
Full House: r6c3=7
Naked Single: r5c2=8
Full House: r2c2=2
Hidden Single: r2c6=9
Hidden Single: r4c4=6
Naked Single: r3c4=4
Naked Single: r3c1=6
Naked Single: r3c9=2
Full House: r3c6=1
Naked Single: r7c4=9
Full House: r8c4=3
Naked Single: r8c6=4
Full House: r7c5=1
Full House: r8c9=1
Naked Single: r5c6=3
Full House: r1c6=6
Full House: r6c5=4
Naked Single: r4c9=3
Naked Single: r5c1=9
Naked Single: r6c7=1
Naked Single: r4c1=1
Full House: r4c8=2
Full House: r6c1=3
Full House: r6c8=9
Naked Single: r5c9=4
Full House: r5c7=6
Naked Single: r7c8=4
Full House: r7c7=2
Naked Single: r9c8=8
Full House: r2c8=3
Full House: r9c9=9
Full House: r1c9=8
Naked Single: r2c5=7
Full House: r1c5=3
Naked Single: r1c1=4
Full House: r1c7=7
Full House: r2c7=4
Full House: r2c1=8
|
easy
| null |
normal_sudoku_608
|
..2..154..54.7............329.54816754621.......69.254.29.....6.37.....5685729431
|
762381549354976812918452673293548167546217398871693254429135786137864925685729431
|
normal_sudoku_608
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 2 . . 1 5 4 .
. 5 4 . 7 . . . .
. . . . . . . . 3
2 9 . 5 4 8 1 6 7
5 4 6 2 1 . . . .
. . . 6 9 . 2 5 4
. 2 9 . . . . . 6
. 3 7 . . . . . 5
6 8 5 7 2 9 4 3 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
762381549354976812918452673293548167546217398871693254429135786137864925685729431 #1 Easy (190)
Full House: r4c3=3
Hidden Single: r5c6=7
Full House: r6c6=3
Hidden Single: r8c8=2
Hidden Single: r2c9=2
Naked Single: r2c6=6
Naked Single: r8c6=4
Naked Single: r7c6=5
Full House: r3c6=2
Naked Single: r8c1=1
Full House: r7c1=4
Naked Single: r8c4=8
Naked Single: r7c5=3
Naked Single: r8c5=6
Full House: r8c7=9
Full House: r7c4=1
Naked Single: r1c5=8
Full House: r3c5=5
Naked Single: r2c7=8
Naked Single: r1c9=9
Full House: r5c9=8
Naked Single: r5c7=3
Full House: r5c8=9
Naked Single: r7c7=7
Full House: r3c7=6
Full House: r7c8=8
Naked Single: r1c4=3
Naked Single: r2c8=1
Full House: r3c8=7
Naked Single: r1c1=7
Full House: r1c2=6
Naked Single: r2c4=9
Full House: r2c1=3
Full House: r3c4=4
Naked Single: r3c2=1
Full House: r6c2=7
Naked Single: r6c1=8
Full House: r3c1=9
Full House: r3c3=8
Full House: r6c3=1
|
easy
| null |
normal_sudoku_2408
|
.36547.2...1836.7.847129563...6.4....65.8.....923.5.1..84.1....6.37..2.4..9...1..
|
936547821251836479847129563178694352365281947492375618584912736613758294729463185
|
normal_sudoku_2408
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 3 6 5 4 7 . 2 .
. . 1 8 3 6 . 7 .
8 4 7 1 2 9 5 6 3
. . . 6 . 4 . . .
. 6 5 . 8 . . . .
. 9 2 3 . 5 . 1 .
. 8 4 . 1 . . . .
6 . 3 7 . . 2 . 4
. . 9 . . . 1 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
936547821251836479847129563178694352365281947492375618584912736613758294729463185 #1 Easy (164)
Full House: r4c3=8
Naked Single: r1c1=9
Naked Single: r6c5=7
Naked Single: r8c6=8
Naked Single: r2c9=9
Naked Single: r1c7=8
Full House: r1c9=1
Full House: r2c7=4
Naked Single: r4c5=9
Naked Single: r6c1=4
Naked Single: r6c7=6
Full House: r6c9=8
Naked Single: r5c4=2
Full House: r5c6=1
Naked Single: r8c5=5
Full House: r9c5=6
Naked Single: r5c9=7
Naked Single: r7c4=9
Full House: r9c4=4
Naked Single: r8c2=1
Full House: r8c8=9
Naked Single: r4c7=3
Naked Single: r5c1=3
Naked Single: r9c9=5
Naked Single: r4c2=7
Full House: r4c1=1
Naked Single: r4c8=5
Full House: r4c9=2
Full House: r7c9=6
Naked Single: r5c7=9
Full House: r5c8=4
Full House: r7c7=7
Naked Single: r7c8=3
Full House: r9c8=8
Naked Single: r9c2=2
Full House: r2c2=5
Full House: r2c1=2
Naked Single: r7c6=2
Full House: r7c1=5
Full House: r9c1=7
Full House: r9c6=3
|
easy
| null |
normal_sudoku_1639
|
.67....121.42.7..69.2..8..73.9.8.1.4..6..9..8..1....73..58713.9..8.2...1.13946..5
|
867394512134257896952618437329785164476139258581462973645871329798523641213946785
|
normal_sudoku_1639
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 6 7 . . . . 1 2
1 . 4 2 . 7 . . 6
9 . 2 . . 8 . . 7
3 . 9 . 8 . 1 . 4
. . 6 . . 9 . . 8
. . 1 . . . . 7 3
. . 5 8 7 1 3 . 9
. . 8 . 2 . . . 1
. 1 3 9 4 6 . . 5
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
867394512134257896952618437329785164476139258581462973645871329798523641213946785 #1 Easy (218)
Hidden Single: r6c7=9
Hidden Single: r2c8=9
Hidden Single: r8c2=9
Hidden Single: r1c5=9
Hidden Single: r8c7=6
Naked Single: r8c8=4
Naked Single: r7c8=2
Naked Single: r8c1=7
Naked Single: r5c8=5
Naked Single: r7c2=4
Full House: r7c1=6
Full House: r9c1=2
Naked Single: r9c8=8
Full House: r9c7=7
Naked Single: r3c8=3
Full House: r4c8=6
Full House: r5c7=2
Naked Single: r5c1=4
Naked Single: r3c2=5
Naked Single: r5c2=7
Naked Single: r1c1=8
Full House: r2c2=3
Full House: r6c1=5
Naked Single: r3c7=4
Naked Single: r4c2=2
Full House: r6c2=8
Naked Single: r2c5=5
Full House: r2c7=8
Full House: r1c7=5
Naked Single: r6c5=6
Naked Single: r4c6=5
Full House: r4c4=7
Naked Single: r3c5=1
Full House: r3c4=6
Full House: r5c5=3
Full House: r5c4=1
Naked Single: r6c4=4
Full House: r6c6=2
Naked Single: r8c6=3
Full House: r1c6=4
Full House: r1c4=3
Full House: r8c4=5
|
easy
| null |
normal_sudoku_5943
|
.65..713.1..5.34.7..3.125.895.73..1...42...75.7..5.3...873.69515...2.7.3..91.5.8.
|
465987132128563497793412568952738614634291875871654329287346951516829743349175286
|
normal_sudoku_5943
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 6 5 . . 7 1 3 .
1 . . 5 . 3 4 . 7
. . 3 . 1 2 5 . 8
9 5 . 7 3 . . 1 .
. . 4 2 . . . 7 5
. 7 . . 5 . 3 . .
. 8 7 3 . 6 9 5 1
5 . . . 2 . 7 . 3
. . 9 1 . 5 . 8 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
465987132128563497793412568952738614634291875871654329287346951516829743349175286 #1 Easy (186)
Naked Single: r7c5=4
Full House: r7c1=2
Naked Single: r9c5=7
Hidden Single: r3c1=7
Hidden Single: r1c9=2
Hidden Single: r2c2=2
Naked Single: r2c3=8
Naked Single: r1c1=4
Full House: r3c2=9
Naked Single: r3c8=6
Full House: r2c8=9
Full House: r3c4=4
Full House: r2c5=6
Naked Single: r8c8=4
Full House: r6c8=2
Naked Single: r8c2=1
Naked Single: r9c9=6
Full House: r9c7=2
Naked Single: r5c2=3
Full House: r9c2=4
Full House: r9c1=3
Full House: r8c3=6
Naked Single: r4c9=4
Full House: r6c9=9
Naked Single: r4c3=2
Full House: r6c3=1
Naked Single: r4c6=8
Full House: r4c7=6
Full House: r5c7=8
Naked Single: r5c5=9
Full House: r1c5=8
Full House: r1c4=9
Naked Single: r6c4=6
Full House: r8c4=8
Full House: r8c6=9
Naked Single: r6c6=4
Full House: r5c6=1
Full House: r5c1=6
Full House: r6c1=8
|
easy
| null |
normal_sudoku_4857
|
.1.6283...2315...48654.312......47...5.9...42.....59..5.13624...4278153....54.2.1
|
714628395923157684865493127239814756157936842486275913591362478642781539378549261
|
normal_sudoku_4857
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 1 . 6 2 8 3 . .
. 2 3 1 5 . . . 4
8 6 5 4 . 3 1 2 .
. . . . . 4 7 . .
. 5 . 9 . . . 4 2
. . . . . 5 9 . .
5 . 1 3 6 2 4 . .
. 4 2 7 8 1 5 3 .
. . . 5 4 . 2 . 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
714628395923157684865493127239814756157936842486275913591362478642781539378549261 #1 Easy (156)
Full House: r9c6=9
Naked Single: r2c6=7
Full House: r3c5=9
Full House: r5c6=6
Full House: r3c9=7
Naked Single: r2c1=9
Naked Single: r5c7=8
Full House: r2c7=6
Full House: r2c8=8
Naked Single: r8c1=6
Full House: r8c9=9
Naked Single: r5c3=7
Naked Single: r1c9=5
Full House: r1c8=9
Naked Single: r7c8=7
Naked Single: r7c9=8
Full House: r9c8=6
Full House: r7c2=9
Naked Single: r1c3=4
Full House: r1c1=7
Naked Single: r9c3=8
Naked Single: r6c8=1
Full House: r4c8=5
Naked Single: r9c1=3
Full House: r9c2=7
Naked Single: r6c3=6
Full House: r4c3=9
Naked Single: r5c1=1
Full House: r5c5=3
Naked Single: r6c9=3
Full House: r4c9=6
Naked Single: r4c1=2
Full House: r6c1=4
Naked Single: r4c5=1
Full House: r6c5=7
Naked Single: r6c2=8
Full House: r4c2=3
Full House: r4c4=8
Full House: r6c4=2
|
easy
| null |
normal_sudoku_2179
|
.78.534..39.4718...426..7..5147...26987.....3263....7872..6.....3.14...745...7.81
|
678253419395471862142689735514738926987526143263914578721865394839142657456397281
|
normal_sudoku_2179
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 7 8 . 5 3 4 . .
3 9 . 4 7 1 8 . .
. 4 2 6 . . 7 . .
5 1 4 7 . . . 2 6
9 8 7 . . . . . 3
2 6 3 . . . . 7 8
7 2 . . 6 . . . .
. 3 . 1 4 . . . 7
4 5 . . . 7 . 8 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
678253419395471862142689735514738926987526143263914578721865394839142657456397281 #1 Easy (156)
Naked Single: r3c1=1
Naked Single: r4c7=9
Naked Single: r1c1=6
Full House: r2c3=5
Full House: r8c1=8
Naked Single: r4c6=8
Full House: r4c5=3
Naked Single: r2c8=6
Full House: r2c9=2
Naked Single: r3c6=9
Naked Single: r1c9=9
Naked Single: r1c4=2
Full House: r3c5=8
Full House: r1c8=1
Naked Single: r3c9=5
Full House: r3c8=3
Full House: r7c9=4
Naked Single: r7c6=5
Naked Single: r5c4=5
Naked Single: r6c6=4
Naked Single: r7c7=3
Naked Single: r7c8=9
Naked Single: r8c6=2
Full House: r5c6=6
Naked Single: r5c7=1
Naked Single: r5c8=4
Full House: r8c8=5
Full House: r5c5=2
Full House: r6c7=5
Naked Single: r6c4=9
Full House: r6c5=1
Full House: r9c5=9
Naked Single: r7c3=1
Full House: r7c4=8
Full House: r9c4=3
Naked Single: r8c7=6
Full House: r8c3=9
Full House: r9c3=6
Full House: r9c7=2
|
easy
| null |
normal_sudoku_2859
|
..6...53.75.9..1.44..5.892..472..3.5325....9..6...5472....59.4.579.24...6.4.7..59
|
296741538758932164413568927947216385325487691861395472132859746579624813684173259
|
normal_sudoku_2859
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 6 . . . 5 3 .
7 5 . 9 . . 1 . 4
4 . . 5 . 8 9 2 .
. 4 7 2 . . 3 . 5
3 2 5 . . . . 9 .
. 6 . . . 5 4 7 2
. . . . 5 9 . 4 .
5 7 9 . 2 4 . . .
6 . 4 . 7 . . 5 9
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
296741538758932164413568927947216385325487691861395472132859746579624813684173259 #1 Easy (214)
Hidden Single: r1c2=9
Hidden Single: r9c7=2
Hidden Single: r3c9=7
Naked Single: r1c9=8
Full House: r2c8=6
Naked Single: r2c5=3
Naked Single: r2c6=2
Full House: r2c3=8
Naked Single: r6c3=1
Naked Single: r3c3=3
Full House: r7c3=2
Naked Single: r3c2=1
Full House: r1c1=2
Full House: r3c5=6
Hidden Single: r7c7=7
Hidden Single: r9c6=3
Naked Single: r9c2=8
Full House: r7c2=3
Full House: r7c1=1
Full House: r9c4=1
Naked Single: r7c9=6
Full House: r7c4=8
Full House: r8c4=6
Naked Single: r5c9=1
Full House: r8c9=3
Naked Single: r8c7=8
Full House: r5c7=6
Full House: r4c8=8
Full House: r8c8=1
Naked Single: r6c4=3
Naked Single: r5c6=7
Naked Single: r4c1=9
Full House: r6c1=8
Full House: r6c5=9
Naked Single: r1c6=1
Full House: r4c6=6
Full House: r4c5=1
Naked Single: r5c4=4
Full House: r1c4=7
Full House: r1c5=4
Full House: r5c5=8
|
easy
| null |
normal_sudoku_2537
|
...7......861.2......3....6...43........6.4..41.....7...4......6.2.9...3..7..5..9
|
329786154586142397741359826265437981978561432413928675194273568652894713837615249
|
puzzles2_17_clue
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . 7 . . . . .
. 8 6 1 . 2 . . .
. . . 3 . . . . 6
. . . 4 3 . . . .
. . . . 6 . 4 . .
4 1 . . . . . 7 .
. . 4 . . . . . .
6 . 2 . 9 . . . 3
. . 7 . . 5 . . 9
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
329786154586142397741359826265437981978561432413928675194273568652894713837615249 #1 Easy (366)
Naked Single: r8c2=5
Naked Single: r8c4=8
Naked Single: r9c2=3
Naked Single: r7c2=9
Hidden Single: r1c6=6
Hidden Single: r6c7=6
Hidden Single: r4c2=6
Hidden Single: r7c5=7
Hidden Single: r7c6=3
Hidden Single: r3c6=9
Naked Single: r6c6=8
Hidden Single: r6c3=3
Hidden Single: r5c8=3
Hidden Single: r2c9=7
Hidden Single: r8c7=7
Hidden Single: r9c5=1
Naked Single: r8c6=4
Full House: r8c8=1
Naked Single: r9c1=8
Full House: r7c1=1
Naked Single: r9c7=2
Naked Single: r9c4=6
Full House: r7c4=2
Full House: r9c8=4
Hidden Single: r6c4=9
Full House: r5c4=5
Naked Single: r6c5=2
Full House: r6c9=5
Naked Single: r7c9=8
Naked Single: r7c7=5
Full House: r7c8=6
Hidden Single: r1c9=4
Naked Single: r1c2=2
Naked Single: r5c2=7
Full House: r3c2=4
Naked Single: r5c6=1
Full House: r4c6=7
Naked Single: r5c9=2
Full House: r4c9=1
Naked Single: r5c1=9
Full House: r5c3=8
Naked Single: r4c3=5
Full House: r4c1=2
Naked Single: r3c3=1
Full House: r1c3=9
Naked Single: r3c7=8
Naked Single: r1c8=5
Naked Single: r3c5=5
Naked Single: r4c7=9
Full House: r4c8=8
Naked Single: r1c1=3
Naked Single: r1c5=8
Full House: r2c5=4
Full House: r1c7=1
Full House: r2c7=3
Naked Single: r2c8=9
Full House: r3c8=2
Full House: r3c1=7
Full House: r2c1=5
|
easy
|
Basic 9x9 Sudoku 2537
|
normal_sudoku_2710
|
..1.46..27.2..3....4......7..9.5..7..3.12..8.4........32....19.6.......4......36.
|
951746832762813549843295617219658473537124986486379251325467198698531724174982365
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 1 . 4 6 . . 2
7 . 2 . . 3 . . .
. 4 . . . . . . 7
. . 9 . 5 . . 7 .
. 3 . 1 2 . . 8 .
4 . . . . . . . .
3 2 . . . . 1 9 .
6 . . . . . . . 4
. . . . . . 3 6 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
951746832762813549843295617219658473537124986486379251325467198698531724174982365 #1 Easy (364)
Naked Single: r5c1=5
Hidden Single: r1c4=7
Hidden Single: r3c3=3
Hidden Single: r4c1=2
Hidden Single: r2c8=4
Hidden Single: r1c8=3
Hidden Single: r8c7=7
Hidden Single: r3c7=6
Naked Single: r4c7=4
Naked Single: r4c6=8
Naked Single: r5c7=9
Naked Single: r5c9=6
Naked Single: r5c3=7
Full House: r5c6=4
Hidden Single: r2c2=6
Naked Single: r4c2=1
Naked Single: r4c9=3
Full House: r4c4=6
Naked Single: r6c2=8
Full House: r6c3=6
Hidden Single: r9c1=1
Hidden Single: r6c7=2
Hidden Single: r8c8=2
Hidden Single: r2c9=9
Hidden Single: r9c2=7
Hidden Single: r1c2=5
Full House: r8c2=9
Naked Single: r1c7=8
Full House: r1c1=9
Full House: r2c7=5
Full House: r3c1=8
Full House: r3c8=1
Full House: r6c8=5
Full House: r6c9=1
Naked Single: r2c4=8
Full House: r2c5=1
Naked Single: r3c5=9
Naked Single: r9c5=8
Naked Single: r8c5=3
Naked Single: r9c9=5
Full House: r7c9=8
Naked Single: r6c5=7
Full House: r7c5=6
Naked Single: r8c4=5
Naked Single: r9c3=4
Naked Single: r6c6=9
Full House: r6c4=3
Naked Single: r3c4=2
Full House: r3c6=5
Naked Single: r7c4=4
Full House: r9c4=9
Full House: r9c6=2
Naked Single: r7c6=7
Full House: r8c6=1
Full House: r8c3=8
Full House: r7c3=5
|
easy
|
Basic 9x9 Sudoku 2710
|
normal_sudoku_2212
|
.7.36.2...12.8.3.735..7.9..62....134...631..2.31...6.91.3.27...245..67.3...5.3.2.
|
879364251412985367356172948628759134794631582531248679163427895245896713987513426
|
normal_sudoku_2212
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 7 . 3 6 . 2 . .
. 1 2 . 8 . 3 . 7
3 5 . . 7 . 9 . .
6 2 . . . . 1 3 4
. . . 6 3 1 . . 2
. 3 1 . . . 6 . 9
1 . 3 . 2 7 . . .
2 4 5 . . 6 7 . 3
. . . 5 . 3 . 2 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
879364251412985367356172948628759134794631582531248679163427895245896713987513426 #1 Easy (228)
Hidden Single: r2c8=6
Hidden Single: r3c3=6
Hidden Single: r3c4=1
Naked Single: r3c9=8
Naked Single: r3c8=4
Full House: r3c6=2
Hidden Single: r2c6=5
Hidden Single: r6c4=2
Hidden Single: r4c5=5
Naked Single: r6c5=4
Naked Single: r6c6=8
Naked Single: r4c6=9
Full House: r1c6=4
Full House: r4c4=7
Full House: r2c4=9
Full House: r4c3=8
Full House: r2c1=4
Naked Single: r8c4=8
Full House: r7c4=4
Naked Single: r1c3=9
Full House: r1c1=8
Naked Single: r5c2=9
Naked Single: r9c3=7
Full House: r5c3=4
Naked Single: r9c1=9
Naked Single: r9c5=1
Full House: r8c5=9
Full House: r8c8=1
Naked Single: r9c9=6
Naked Single: r1c8=5
Full House: r1c9=1
Full House: r7c9=5
Naked Single: r9c2=8
Full House: r7c2=6
Full House: r9c7=4
Naked Single: r6c8=7
Full House: r6c1=5
Full House: r5c1=7
Naked Single: r7c7=8
Full House: r5c7=5
Full House: r5c8=8
Full House: r7c8=9
|
easy
| null |
normal_sudoku_1383
|
..13.....2459.........41.52..7...8......8.9..1....9.47358.9......263.5.16..7....9
|
861325794245976138739841652497213865526487913183569247358192476972634581614758329
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 1 3 . . . . .
2 4 5 9 . . . . .
. . . . 4 1 . 5 2
. . 7 . . . 8 . .
. . . . 8 . 9 . .
1 . . . . 9 . 4 7
3 5 8 . 9 . . . .
. . 2 6 3 . 5 . 1
6 . . 7 . . . . 9
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
861325794245976138739841652497213865526487913183569247358192476972634581614758329 #1 Easy (264)
Naked Single: r3c4=8
Naked Single: r9c2=1
Naked Single: r9c3=4
Hidden Single: r6c2=8
Hidden Single: r7c4=1
Hidden Single: r2c7=1
Hidden Single: r5c6=7
Naked Single: r2c6=6
Naked Single: r2c5=7
Hidden Single: r1c8=9
Hidden Single: r3c3=9
Naked Single: r3c1=7
Naked Single: r1c1=8
Naked Single: r1c2=6
Full House: r3c2=3
Full House: r3c7=6
Naked Single: r8c1=9
Full House: r8c2=7
Naked Single: r1c9=4
Naked Single: r5c2=2
Full House: r4c2=9
Naked Single: r8c8=8
Full House: r8c6=4
Naked Single: r1c7=7
Naked Single: r7c9=6
Naked Single: r2c8=3
Full House: r2c9=8
Naked Single: r7c6=2
Naked Single: r9c8=2
Naked Single: r1c6=5
Full House: r1c5=2
Naked Single: r7c7=4
Full House: r7c8=7
Full House: r9c7=3
Full House: r6c7=2
Naked Single: r9c5=5
Full House: r9c6=8
Full House: r4c6=3
Naked Single: r6c4=5
Naked Single: r6c5=6
Full House: r4c5=1
Full House: r6c3=3
Full House: r5c3=6
Naked Single: r4c9=5
Full House: r5c9=3
Naked Single: r5c4=4
Full House: r4c4=2
Naked Single: r4c8=6
Full House: r5c8=1
Full House: r4c1=4
Full House: r5c1=5
|
easy
|
Basic 9x9 Sudoku 1383
|
normal_sudoku_5781
|
..2..9.8.7...8.4....12.5..93..7....1..4.53.78..5.2...4..8.9...5.1.......2......6.
|
542379186793186452861245739389764521124953678675821394438697215916532847257418963
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 2 . . 9 . 8 .
7 . . . 8 . 4 . .
. . 1 2 . 5 . . 9
3 . . 7 . . . . 1
. . 4 . 5 3 . 7 8
. . 5 . 2 . . . 4
. . 8 . 9 . . . 5
. 1 . . . . . . .
2 . . . . . . 6 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
542379186793186452861245739389764521124953678675821394438697215916532847257418963 #1 Easy (376)
Naked Single: r3c8=3
Naked Single: r6c8=9
Hidden Single: r6c2=7
Hidden Single: r6c7=3
Hidden Single: r5c4=9
Hidden Single: r8c1=9
Hidden Single: r5c1=1
Hidden Single: r9c7=9
Hidden Single: r8c4=5
Hidden Single: r1c1=5
Hidden Single: r9c2=5
Hidden Single: r8c7=8
Hidden Single: r4c7=5
Naked Single: r4c8=2
Full House: r5c7=6
Full House: r5c2=2
Naked Single: r8c8=4
Naked Single: r3c7=7
Naked Single: r7c8=1
Full House: r2c8=5
Naked Single: r1c7=1
Full House: r7c7=2
Naked Single: r1c9=6
Full House: r2c9=2
Hidden Single: r1c5=7
Hidden Single: r7c6=7
Hidden Single: r9c5=1
Hidden Single: r8c6=2
Hidden Single: r8c5=3
Naked Single: r8c9=7
Full House: r8c3=6
Full House: r9c9=3
Naked Single: r4c3=9
Naked Single: r7c1=4
Naked Single: r9c3=7
Full House: r2c3=3
Full House: r7c2=3
Full House: r7c4=6
Naked Single: r1c2=4
Full House: r1c4=3
Naked Single: r2c4=1
Naked Single: r2c6=6
Full House: r2c2=9
Full House: r3c5=4
Full House: r4c5=6
Naked Single: r6c4=8
Full House: r9c4=4
Full House: r9c6=8
Naked Single: r4c2=8
Full House: r4c6=4
Full House: r6c1=6
Full House: r6c6=1
Full House: r3c2=6
Full House: r3c1=8
|
easy
|
Basic 9x9 Sudoku 5781
|
normal_sudoku_1375
|
.2...1..4..13..2....64..731152894.7.679..34828..6..915..8..75...1..65.4....9..1..
|
923781654741356298586429731152894376679513482834672915298147563317265849465938127
|
normal_sudoku_1375
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 2 . . . 1 . . 4
. . 1 3 . . 2 . .
. . 6 4 . . 7 3 1
1 5 2 8 9 4 . 7 .
6 7 9 . . 3 4 8 2
8 . . 6 . . 9 1 5
. . 8 . . 7 5 . .
. 1 . . 6 5 . 4 .
. . . 9 . . 1 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
923781654741356298586429731152894376679513482834672915298147563317265849465938127 #1 Easy (168)
Naked Single: r6c6=2
Naked Single: r8c4=2
Naked Single: r6c5=7
Naked Single: r9c6=8
Naked Single: r7c4=1
Naked Single: r3c6=9
Full House: r2c6=6
Naked Single: r5c4=5
Full House: r1c4=7
Full House: r5c5=1
Naked Single: r3c1=5
Naked Single: r3c2=8
Full House: r3c5=2
Naked Single: r1c3=3
Naked Single: r1c1=9
Naked Single: r6c3=4
Full House: r6c2=3
Naked Single: r8c3=7
Full House: r9c3=5
Naked Single: r2c2=4
Full House: r2c1=7
Naked Single: r8c1=3
Naked Single: r9c2=6
Full House: r7c2=9
Naked Single: r8c7=8
Full House: r8c9=9
Naked Single: r9c8=2
Naked Single: r1c7=6
Full House: r4c7=3
Full House: r4c9=6
Naked Single: r2c9=8
Naked Single: r7c8=6
Naked Single: r9c1=4
Full House: r7c1=2
Naked Single: r1c8=5
Full House: r1c5=8
Full House: r2c5=5
Full House: r2c8=9
Naked Single: r7c9=3
Full House: r7c5=4
Full House: r9c5=3
Full House: r9c9=7
|
easy
| null |
normal_sudoku_2652
|
......6..3....8........7.855..24..9.19....5...8.....147...6......2.......5647...3
|
978524631325618749641397285563241897194783562287956314739162458412835976856479123
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . . . 6 . .
3 . . . . 8 . . .
. . . . . 7 . 8 5
5 . . 2 4 . . 9 .
1 9 . . . . 5 . .
. 8 . . . . . 1 4
7 . . . 6 . . . .
. . 2 . . . . . .
. 5 6 4 7 . . . 3
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
978524631325618749641397285563241897194783562287956314739162458412835976856479123 #1 Easy (318)
Naked Single: r9c8=2
Hidden Single: r4c6=1
Naked Single: r9c6=9
Naked Single: r9c1=8
Full House: r9c7=1
Hidden Single: r5c3=4
Hidden Single: r6c1=2
Hidden Single: r1c6=4
Naked Single: r1c1=9
Naked Single: r3c3=1
Naked Single: r8c1=4
Full House: r3c1=6
Hidden Single: r5c9=2
Hidden Single: r7c6=2
Hidden Single: r1c3=8
Hidden Single: r4c2=6
Hidden Single: r7c3=9
Naked Single: r7c9=8
Naked Single: r4c9=7
Naked Single: r7c7=4
Naked Single: r1c9=1
Naked Single: r4c3=3
Full House: r4c7=8
Full House: r6c3=7
Full House: r2c3=5
Naked Single: r6c7=3
Full House: r5c8=6
Naked Single: r7c8=5
Naked Single: r2c9=9
Full House: r8c9=6
Naked Single: r5c6=3
Naked Single: r8c8=7
Full House: r8c7=9
Naked Single: r3c7=2
Full House: r2c7=7
Naked Single: r5c5=8
Full House: r5c4=7
Naked Single: r8c6=5
Full House: r6c6=6
Naked Single: r1c8=3
Full House: r2c8=4
Naked Single: r3c2=4
Naked Single: r1c4=5
Naked Single: r2c2=2
Full House: r1c2=7
Full House: r1c5=2
Naked Single: r6c4=9
Full House: r6c5=5
Naked Single: r2c5=1
Full House: r2c4=6
Naked Single: r3c4=3
Full House: r3c5=9
Full House: r8c5=3
Naked Single: r7c4=1
Full House: r7c2=3
Full House: r8c2=1
Full House: r8c4=8
|
easy
|
Basic 9x9 Sudoku 2652
|
normal_sudoku_2737
|
18...9..44....8...92.....6..18..234.3.9...27.2.4..3.51.92.3.......95...2..1284693
|
187629534436578129925341867518792346369415278274863951692137485843956712751284693
|
normal_sudoku_2737
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
1 8 . . . 9 . . 4
4 . . . . 8 . . .
9 2 . . . . . 6 .
. 1 8 . . 2 3 4 .
3 . 9 . . . 2 7 .
2 . 4 . . 3 . 5 1
. 9 2 . 3 . . . .
. . . 9 5 . . . 2
. . 1 2 8 4 6 9 3
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
187629534436578129925341867518792346369415278274863951692137485843956712751284693 #1 Easy (310)
Hidden Single: r7c7=4
Hidden Single: r8c2=4
Hidden Single: r7c9=5
Hidden Single: r8c3=3
Hidden Single: r2c2=3
Hidden Single: r8c7=7
Naked Single: r1c7=5
Hidden Single: r3c4=3
Hidden Single: r1c8=3
Hidden Single: r3c5=4
Hidden Single: r5c4=4
Hidden Single: r1c5=2
Hidden Single: r2c8=2
Hidden Single: r5c9=8
Naked Single: r3c9=7
Naked Single: r6c7=9
Full House: r4c9=6
Full House: r2c9=9
Naked Single: r3c3=5
Naked Single: r2c7=1
Full House: r3c7=8
Full House: r3c6=1
Naked Single: r8c6=6
Naked Single: r5c6=5
Full House: r7c6=7
Full House: r7c4=1
Naked Single: r8c1=8
Full House: r8c8=1
Full House: r7c8=8
Full House: r7c1=6
Naked Single: r4c4=7
Naked Single: r5c2=6
Full House: r5c5=1
Naked Single: r1c4=6
Full House: r1c3=7
Full House: r2c3=6
Naked Single: r4c1=5
Full House: r4c5=9
Full House: r6c2=7
Full House: r9c1=7
Full House: r9c2=5
Naked Single: r6c5=6
Full House: r2c5=7
Full House: r2c4=5
Full House: r6c4=8
|
easy
| null |
normal_sudoku_790
|
56..381.2..8...6933...6...583..7.5199.51.3..6...8.5327..4....311.3..7.6.68.3..754
|
567938142248751693391264875832476519975123486416895327754689231123547968689312754
|
normal_sudoku_790
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
5 6 . . 3 8 1 . 2
. . 8 . . . 6 9 3
3 . . . 6 . . . 5
8 3 . . 7 . 5 1 9
9 . 5 1 . 3 . . 6
. . . 8 . 5 3 2 7
. . 4 . . . . 3 1
1 . 3 . . 7 . 6 .
6 8 . 3 . . 7 5 4
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
567938142248751693391264875832476519975123486416895327754689231123547968689312754 #1 Easy (156)
Full House: r8c9=8
Naked Single: r6c1=4
Naked Single: r6c2=1
Naked Single: r6c5=9
Full House: r6c3=6
Naked Single: r4c3=2
Full House: r5c2=7
Naked Single: r9c3=9
Naked Single: r1c3=7
Full House: r3c3=1
Naked Single: r1c8=4
Full House: r1c4=9
Naked Single: r2c1=2
Full House: r7c1=7
Naked Single: r3c7=8
Full House: r3c8=7
Full House: r5c8=8
Full House: r5c7=4
Full House: r5c5=2
Naked Single: r2c2=4
Full House: r3c2=9
Naked Single: r9c5=1
Full House: r9c6=2
Naked Single: r2c6=1
Naked Single: r2c5=5
Full House: r2c4=7
Naked Single: r3c6=4
Full House: r3c4=2
Naked Single: r7c5=8
Full House: r8c5=4
Naked Single: r4c6=6
Full House: r4c4=4
Full House: r7c6=9
Naked Single: r8c4=5
Full House: r7c4=6
Naked Single: r7c7=2
Full House: r7c2=5
Full House: r8c2=2
Full House: r8c7=9
|
easy
| null |
normal_sudoku_1879
|
8...5...9..9.4..676........9..7....4.....237....1.4...496...5.2..8.....6..2....9.
|
873651249259843167641279853925738614164592378387164925496317582718925436532486791
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
8 . . . 5 . . . 9
. . 9 . 4 . . 6 7
6 . . . . . . . .
9 . . 7 . . . . 4
. . . . . 2 3 7 .
. . . 1 . 4 . . .
4 9 6 . . . 5 . 2
. . 8 . . . . . 6
. . 2 . . . . 9 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
873651249259843167641279853925738614164592378387164925496317582718925436532486791 #1 Medium (544)
Hidden Single: r6c7=9
Hidden Single: r4c7=6
Locked Candidates Type 1 (Pointing): 5 in b3 => r3c23<>5
Locked Candidates Type 1 (Pointing): 2 in b6 => r13c8<>2
Locked Candidates Type 2 (Claiming): 7 in r7 => r8c56,r9c56<>7
Locked Candidates Type 2 (Claiming): 5 in c3 => r456c2,r56c1<>5
Naked Single: r5c1=1
Hidden Single: r4c8=1
Hidden Single: r4c2=2
Hidden Single: r6c8=2
Hidden Single: r2c1=2
Hidden Single: r3c8=5
Hidden Single: r2c2=5
Hidden Single: r7c8=8
Naked Single: r7c4=3
Naked Single: r2c4=8
Naked Single: r2c7=1
Full House: r2c6=3
Hidden Single: r3c7=8
Naked Single: r3c9=3
Naked Single: r1c8=4
Full House: r1c7=2
Full House: r8c8=3
Naked Single: r9c9=1
Naked Single: r1c4=6
Hidden Single: r8c2=1
Hidden Single: r9c6=6
Naked Single: r9c5=8
Naked Single: r4c5=3
Naked Single: r4c3=5
Full House: r4c6=8
Naked Single: r6c5=6
Naked Single: r5c3=4
Naked Single: r5c5=9
Full House: r5c4=5
Naked Single: r8c5=2
Naked Single: r5c9=8
Full House: r5c2=6
Full House: r6c9=5
Naked Single: r9c4=4
Naked Single: r8c4=9
Full House: r3c4=2
Naked Single: r9c7=7
Full House: r8c7=4
Naked Single: r8c6=5
Full House: r8c1=7
Naked Single: r9c2=3
Full House: r9c1=5
Full House: r6c1=3
Naked Single: r1c2=7
Naked Single: r6c3=7
Full House: r6c2=8
Full House: r3c2=4
Naked Single: r1c6=1
Full House: r1c3=3
Full House: r3c3=1
Naked Single: r3c5=7
Full House: r3c6=9
Full House: r7c6=7
Full House: r7c5=1
|
medium
|
Basic 9x9 Sudoku 1879
|
normal_sudoku_835
|
..8...2.6.9..5....5.......8157...649289546713364..9825.76...9..913..7....254.....
|
748931256692854371531672498157328649289546713364719825476185932913267584825493167
|
normal_sudoku_835
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 8 . . . 2 . 6
. 9 . . 5 . . . .
5 . . . . . . . 8
1 5 7 . . . 6 4 9
2 8 9 5 4 6 7 1 3
3 6 4 . . 9 8 2 5
. 7 6 . . . 9 . .
9 1 3 . . 7 . . .
. 2 5 4 . . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
748931256692854371531672498157328649289546713364719825476185932913267584825493167 #1 Easy (258)
Naked Single: r9c1=8
Full House: r7c1=4
Naked Single: r1c1=7
Full House: r2c1=6
Hidden Single: r1c8=5
Hidden Single: r7c6=5
Hidden Single: r8c7=5
Hidden Single: r9c5=9
Hidden Single: r3c8=9
Hidden Single: r8c9=4
Hidden Single: r1c4=9
Hidden Single: r9c8=6
Naked Single: r8c8=8
Naked Single: r7c8=3
Full House: r2c8=7
Naked Single: r9c7=1
Naked Single: r2c9=1
Naked Single: r7c9=2
Full House: r9c9=7
Full House: r9c6=3
Naked Single: r2c3=2
Full House: r3c3=1
Hidden Single: r1c6=1
Naked Single: r1c5=3
Full House: r1c2=4
Full House: r3c2=3
Naked Single: r2c4=8
Naked Single: r3c7=4
Full House: r2c7=3
Full House: r2c6=4
Naked Single: r7c4=1
Full House: r7c5=8
Naked Single: r3c6=2
Full House: r4c6=8
Naked Single: r6c4=7
Full House: r6c5=1
Naked Single: r4c5=2
Full House: r4c4=3
Naked Single: r3c4=6
Full House: r3c5=7
Full House: r8c5=6
Full House: r8c4=2
|
easy
| null |
normal_sudoku_4976
|
415.2.7..3.6.9.4.2.2...456.8..1....76972831455..9478.6........125.8.......3..2.5.
|
415326789376598412928714563842165397697283145531947826784659231259831674163472958
|
normal_sudoku_4976
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 1 5 . 2 . 7 . .
3 . 6 . 9 . 4 . 2
. 2 . . . 4 5 6 .
8 . . 1 . . . . 7
6 9 7 2 8 3 1 4 5
5 . . 9 4 7 8 . 6
. . . . . . . . 1
2 5 . 8 . . . . .
. . 3 . . 2 . 5 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
415326789376598412928714563842165397697283145531947826784659231259831674163472958 #1 Easy (228)
Naked Single: r6c2=3
Naked Single: r4c2=4
Naked Single: r6c8=2
Full House: r6c3=1
Full House: r4c3=2
Hidden Single: r3c5=1
Hidden Single: r2c8=1
Hidden Single: r9c1=1
Hidden Single: r7c7=2
Hidden Single: r8c6=1
Hidden Single: r7c6=9
Naked Single: r7c1=7
Full House: r3c1=9
Naked Single: r3c3=8
Full House: r2c2=7
Naked Single: r3c9=3
Full House: r3c4=7
Naked Single: r7c3=4
Full House: r8c3=9
Naked Single: r2c4=5
Full House: r2c6=8
Naked Single: r8c9=4
Naked Single: r1c6=6
Full House: r1c4=3
Full House: r4c6=5
Full House: r4c5=6
Naked Single: r7c4=6
Full House: r9c4=4
Naked Single: r9c5=7
Naked Single: r7c2=8
Full House: r9c2=6
Naked Single: r8c5=3
Full House: r7c5=5
Full House: r7c8=3
Naked Single: r9c7=9
Full House: r9c9=8
Full House: r1c9=9
Full House: r1c8=8
Naked Single: r8c7=6
Full House: r8c8=7
Full House: r4c8=9
Full House: r4c7=3
|
easy
| null |
normal_sudoku_3637
|
8.52.3.4.4..8....39321....7648321.7.5..9..3.2..956....7864321591.36......547.....
|
875293641461875293932146587648321975517984362329567418786432159193658724254719836
|
normal_sudoku_3637
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
8 . 5 2 . 3 . 4 .
4 . . 8 . . . . 3
9 3 2 1 . . . . 7
6 4 8 3 2 1 . 7 .
5 . . 9 . . 3 . 2
. . 9 5 6 . . . .
7 8 6 4 3 2 1 5 9
1 . 3 6 . . . . .
. 5 4 7 . . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
875293641461875293932146587648321975517984362329567418786432159193658724254719836 #1 Easy (156)
Naked Single: r4c9=5
Full House: r4c7=9
Naked Single: r9c1=2
Full House: r6c1=3
Full House: r8c2=9
Naked Single: r1c7=6
Naked Single: r1c9=1
Naked Single: r3c8=8
Naked Single: r9c7=8
Naked Single: r1c2=7
Full House: r1c5=9
Naked Single: r3c7=5
Naked Single: r6c8=1
Naked Single: r8c8=2
Naked Single: r6c7=4
Naked Single: r8c9=4
Naked Single: r9c6=9
Naked Single: r9c9=6
Full House: r6c9=8
Full House: r5c8=6
Naked Single: r2c3=1
Full House: r2c2=6
Full House: r5c3=7
Naked Single: r5c2=1
Full House: r6c2=2
Full House: r6c6=7
Naked Single: r9c5=1
Full House: r9c8=3
Full House: r2c8=9
Full House: r2c7=2
Full House: r8c7=7
Naked Single: r3c5=4
Full House: r3c6=6
Naked Single: r2c6=5
Full House: r2c5=7
Naked Single: r5c5=8
Full House: r5c6=4
Full House: r8c6=8
Full House: r8c5=5
|
easy
| null |
normal_sudoku_6432
|
.2963.7...4...9...6..7....9.53..7..6.94.26..7....1..8..3....57.47.2.......6..3..4
|
529634718347189265681752349153847926894326157762915483938461572475298631216573894
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 2 9 6 3 . 7 . .
. 4 . . . 9 . . .
6 . . 7 . . . . 9
. 5 3 . . 7 . . 6
. 9 4 . 2 6 . . 7
. . . . 1 . . 8 .
. 3 . . . . 5 7 .
4 7 . 2 . . . . .
. . 6 . . 3 . . 4
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
529634718347189265681752349153847926894326157762915483938461572475298631216573894 #1 Medium (444)
Naked Single: r6c2=6
Hidden Single: r2c1=3
Hidden Single: r9c5=7
Hidden Single: r3c6=2
Hidden Single: r7c5=6
Hidden Single: r2c3=7
Naked Single: r6c3=2
Naked Single: r6c1=7
Locked Candidates Type 1 (Pointing): 1 in b4 => r179c1<>1
Locked Candidates Type 1 (Pointing): 1 in b1 => r3c78<>1
Locked Candidates Type 1 (Pointing): 8 in b4 => r179c1<>8
Naked Single: r1c1=5
Hidden Single: r8c3=5
Hidden Single: r9c4=5
Hidden Single: r6c6=5
Naked Single: r6c9=3
Naked Single: r5c7=1
Naked Single: r5c1=8
Full House: r4c1=1
Naked Single: r5c8=5
Full House: r5c4=3
Hidden Single: r2c9=5
Naked Single: r2c5=8
Naked Single: r2c4=1
Naked Single: r8c5=9
Naked Single: r1c6=4
Full House: r3c5=5
Full House: r4c5=4
Naked Single: r1c8=1
Full House: r1c9=8
Naked Single: r6c4=9
Full House: r4c4=8
Full House: r6c7=4
Full House: r7c4=4
Naked Single: r8c9=1
Full House: r7c9=2
Naked Single: r3c7=3
Naked Single: r8c6=8
Full House: r7c6=1
Naked Single: r7c1=9
Full House: r7c3=8
Full House: r9c1=2
Full House: r3c3=1
Full House: r9c2=1
Full House: r3c2=8
Full House: r3c8=4
Naked Single: r9c8=9
Full House: r9c7=8
Naked Single: r8c7=6
Full House: r8c8=3
Naked Single: r4c8=2
Full House: r2c8=6
Full House: r2c7=2
Full House: r4c7=9
|
medium
|
Basic 9x9 Sudoku 6432
|
normal_sudoku_6660
|
.7...31.21.56..7..8..71.....8.9.1..6..7..631.961.3.2...1...9..3...34..51..41..82.
|
679853142145692738832714695483921576257486319961537284518279463726348951394165827
|
normal_sudoku_6660
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 7 . . . 3 1 . 2
1 . 5 6 . . 7 . .
8 . . 7 1 . . . .
. 8 . 9 . 1 . . 6
. . 7 . . 6 3 1 .
9 6 1 . 3 . 2 . .
. 1 . . . 9 . . 3
. . . 3 4 . . 5 1
. . 4 1 . . 8 2 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
679853142145692738832714695483921576257486319961537284518279463726348951394165827 #1 Easy (244)
Hidden Single: r5c9=9
Naked Single: r9c9=7
Naked Single: r9c6=5
Naked Single: r9c5=6
Naked Single: r9c1=3
Full House: r9c2=9
Naked Single: r8c2=2
Hidden Single: r8c7=9
Hidden Single: r7c1=5
Hidden Single: r5c2=5
Hidden Single: r4c3=3
Hidden Single: r3c3=2
Naked Single: r3c6=4
Naked Single: r3c2=3
Full House: r2c2=4
Naked Single: r3c9=5
Naked Single: r1c1=6
Full House: r1c3=9
Naked Single: r2c9=8
Full House: r6c9=4
Naked Single: r3c7=6
Full House: r3c8=9
Naked Single: r8c1=7
Naked Single: r1c8=4
Full House: r2c8=3
Naked Single: r2c6=2
Full House: r2c5=9
Naked Single: r4c7=5
Full House: r7c7=4
Full House: r7c8=6
Naked Single: r4c8=7
Full House: r6c8=8
Naked Single: r8c6=8
Full House: r6c6=7
Full House: r6c4=5
Full House: r8c3=6
Full House: r7c3=8
Naked Single: r4c5=2
Full House: r4c1=4
Full House: r5c1=2
Naked Single: r7c4=2
Full House: r7c5=7
Naked Single: r1c4=8
Full House: r1c5=5
Full House: r5c5=8
Full House: r5c4=4
|
easy
| null |
normal_sudoku_6249
|
.21.3.6..9..4..2..34...5.8..84.9.5.6.....67..6..5.4.2.46...9.5.17.85346...364...1
|
821937645957468213346125987784291536215386794639574128468719352172853469593642871
|
normal_sudoku_6249
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 2 1 . 3 . 6 . .
9 . . 4 . . 2 . .
3 4 . . . 5 . 8 .
. 8 4 . 9 . 5 . 6
. . . . . 6 7 . .
6 . . 5 . 4 . 2 .
4 6 . . . 9 . 5 .
1 7 . 8 5 3 4 6 .
. . 3 6 4 . . . 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
821937645957468213346125987784291536215386794639574128468719352172853469593642871 #1 Easy (176)
Naked Single: r2c2=5
Naked Single: r9c2=9
Naked Single: r8c3=2
Full House: r8c9=9
Naked Single: r9c7=8
Naked Single: r9c8=7
Naked Single: r7c3=8
Full House: r9c1=5
Full House: r9c6=2
Naked Single: r3c9=7
Naked Single: r7c7=3
Full House: r7c9=2
Naked Single: r5c1=2
Naked Single: r2c9=3
Naked Single: r3c3=6
Naked Single: r4c1=7
Full House: r1c1=8
Full House: r2c3=7
Naked Single: r2c8=1
Naked Single: r6c9=8
Naked Single: r4c6=1
Naked Single: r6c3=9
Full House: r5c3=5
Naked Single: r1c6=7
Full House: r2c6=8
Full House: r2c5=6
Naked Single: r3c7=9
Full House: r6c7=1
Naked Single: r4c8=3
Full House: r4c4=2
Naked Single: r5c9=4
Full House: r1c9=5
Full House: r1c8=4
Full House: r1c4=9
Full House: r5c8=9
Naked Single: r5c4=3
Naked Single: r5c5=8
Full House: r6c5=7
Full House: r6c2=3
Full House: r5c2=1
Naked Single: r3c4=1
Full House: r3c5=2
Full House: r7c5=1
Full House: r7c4=7
|
easy
| null |
normal_sudoku_1548
|
8..3...1.4....2..6....5.4..3.95.....17.9.8....68...79..437...8.7....6..2....4.5..
|
856394217437182956912657438329571864174968325568423791243715689795836142681249573
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
8 . . 3 . . . 1 .
4 . . . . 2 . . 6
. . . . 5 . 4 . .
3 . 9 5 . . . . .
1 7 . 9 . 8 . . .
. 6 8 . . . 7 9 .
. 4 3 7 . . . 8 .
7 . . . . 6 . . 2
. . . . 4 . 5 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
856394217437182956912657438329571864174968325568423791243715689795836142681249573 #1 Easy (342)
Naked Single: r4c2=2
Naked Single: r6c1=5
Full House: r5c3=4
Hidden Single: r3c4=6
Hidden Single: r1c6=4
Hidden Single: r8c8=4
Naked Single: r4c8=6
Hidden Single: r6c4=4
Hidden Single: r7c6=5
Hidden Single: r1c3=6
Hidden Single: r3c9=8
Hidden Single: r4c9=4
Hidden Single: r5c5=6
Hidden Single: r7c7=6
Hidden Single: r6c5=2
Hidden Single: r9c4=2
Naked Single: r9c3=1
Naked Single: r8c3=5
Naked Single: r2c3=7
Full House: r3c3=2
Naked Single: r3c1=9
Naked Single: r1c2=5
Naked Single: r7c1=2
Full House: r9c1=6
Hidden Single: r1c7=2
Naked Single: r5c7=3
Naked Single: r2c7=9
Naked Single: r5c9=5
Full House: r5c8=2
Naked Single: r6c9=1
Full House: r4c7=8
Full House: r8c7=1
Full House: r6c6=3
Naked Single: r1c9=7
Full House: r1c5=9
Naked Single: r7c9=9
Full House: r7c5=1
Full House: r9c9=3
Full House: r9c8=7
Naked Single: r8c4=8
Full House: r2c4=1
Naked Single: r9c6=9
Full House: r8c5=3
Full House: r8c2=9
Full House: r9c2=8
Naked Single: r3c8=3
Full House: r2c8=5
Naked Single: r2c5=8
Full House: r4c5=7
Full House: r2c2=3
Full House: r3c6=7
Full House: r3c2=1
Full House: r4c6=1
|
easy
|
Basic 9x9 Sudoku 1548
|
normal_sudoku_1155
|
41...69...2.9.5.81895.....3.4..57..978961....25149.7..5381.9.2.9.43....51.25.43..
|
413826957627935481895741263346257819789613542251498736538179624964382175172564398
|
normal_sudoku_1155
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 1 . . . 6 9 . .
. 2 . 9 . 5 . 8 1
8 9 5 . . . . . 3
. 4 . . 5 7 . . 9
7 8 9 6 1 . . . .
2 5 1 4 9 . 7 . .
5 3 8 1 . 9 . 2 .
9 . 4 3 . . . . 5
1 . 2 5 . 4 3 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
413826957627935481895741263346257819789613542251498736538179624964382175172564398 #1 Medium (242)
Hidden Single: r3c6=1
Hidden Single: r9c8=9
Hidden Single: r1c8=5
Hidden Single: r5c7=5
Locked Candidates Type 1 (Pointing): 6 in b1 => r2c7<>6
Naked Single: r2c7=4
Naked Single: r7c7=6
Naked Single: r3c7=2
Naked Single: r7c5=7
Full House: r7c9=4
Naked Single: r1c9=7
Full House: r3c8=6
Naked Single: r3c4=7
Full House: r3c5=4
Naked Single: r2c5=3
Naked Single: r5c9=2
Naked Single: r1c3=3
Naked Single: r9c9=8
Full House: r6c9=6
Naked Single: r6c8=3
Full House: r6c6=8
Naked Single: r2c1=6
Full House: r2c3=7
Full House: r4c3=6
Full House: r4c1=3
Naked Single: r5c6=3
Full House: r5c8=4
Full House: r4c4=2
Full House: r8c6=2
Full House: r1c4=8
Full House: r1c5=2
Naked Single: r8c7=1
Full House: r4c7=8
Full House: r4c8=1
Full House: r8c8=7
Naked Single: r9c5=6
Full House: r8c5=8
Full House: r8c2=6
Full House: r9c2=7
|
medium
| null |
normal_sudoku_284
|
.5.6....2.6......124.5..7....13.8.9...........3..614......73...4..1......174.2.5.
|
158637942769824531243519768671348295824795316935261487586973124492156873317482659
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 5 . 6 . . . . 2
. 6 . . . . . . 1
2 4 . 5 . . 7 . .
. . 1 3 . 8 . 9 .
. . . . . . . . .
. 3 . . 6 1 4 . .
. . . . 7 3 . . .
4 . . 1 . . . . .
. 1 7 4 . 2 . 5 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
158637942769824531243519768671348295824795316935261487586973124492156873317482659 #1 Easy (400)
Naked Single: r3c6=9
Hidden Single: r1c1=1
Hidden Single: r3c5=1
Hidden Single: r4c5=4
Hidden Single: r5c3=4
Hidden Single: r7c9=4
Hidden Single: r8c6=6
Hidden Single: r2c7=5
Hidden Single: r1c6=7
Naked Single: r2c6=4
Full House: r5c6=5
Hidden Single: r2c1=7
Hidden Single: r7c3=6
Hidden Single: r8c5=5
Hidden Single: r1c7=9
Hidden Single: r1c8=4
Hidden Single: r9c1=3
Hidden Single: r2c3=9
Hidden Single: r7c1=5
Naked Single: r4c1=6
Naked Single: r4c7=2
Naked Single: r4c2=7
Full House: r4c9=5
Hidden Single: r6c3=5
Hidden Single: r6c4=2
Naked Single: r2c4=8
Naked Single: r5c5=9
Full House: r5c4=7
Full House: r7c4=9
Full House: r9c5=8
Naked Single: r1c5=3
Full House: r1c3=8
Full House: r2c5=2
Full House: r2c8=3
Full House: r3c3=3
Full House: r8c3=2
Naked Single: r5c1=8
Full House: r6c1=9
Full House: r5c2=2
Naked Single: r9c7=6
Full House: r9c9=9
Naked Single: r7c2=8
Full House: r8c2=9
Naked Single: r7c7=1
Full House: r7c8=2
Naked Single: r5c7=3
Full House: r8c7=8
Naked Single: r5c9=6
Full House: r5c8=1
Naked Single: r8c8=7
Full House: r8c9=3
Naked Single: r3c9=8
Full House: r3c8=6
Full House: r6c8=8
Full House: r6c9=7
|
easy
|
Basic 9x9 Sudoku 284
|
normal_sudoku_2909
|
85...47..713.564..4.29...5.391...6..587462..1624.3..7.2..6.8...9.8......176593.4.
|
859314762713256489462987153391875624587462391624139875235648917948721536176593248
|
normal_sudoku_2909
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
8 5 . . . 4 7 . .
7 1 3 . 5 6 4 . .
4 . 2 9 . . . 5 .
3 9 1 . . . 6 . .
5 8 7 4 6 2 . . 1
6 2 4 . 3 . . 7 .
2 . . 6 . 8 . . .
9 . 8 . . . . . .
1 7 6 5 9 3 . 4 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
859314762713256489462987153391875624587462391624139875235648917948721536176593248 #1 Easy (226)
Naked Single: r3c2=6
Full House: r1c3=9
Full House: r7c3=5
Hidden Single: r6c6=9
Hidden Single: r1c4=3
Hidden Single: r4c9=4
Hidden Single: r6c4=1
Hidden Single: r4c6=5
Hidden Single: r4c8=2
Hidden Single: r2c8=8
Naked Single: r2c4=2
Full House: r2c9=9
Naked Single: r3c9=3
Naked Single: r1c5=1
Naked Single: r8c4=7
Full House: r4c4=8
Full House: r4c5=7
Naked Single: r3c7=1
Naked Single: r7c9=7
Naked Single: r1c8=6
Full House: r1c9=2
Naked Single: r3c6=7
Full House: r8c6=1
Full House: r3c5=8
Naked Single: r7c5=4
Full House: r8c5=2
Naked Single: r9c9=8
Full House: r9c7=2
Naked Single: r8c8=3
Naked Single: r7c2=3
Full House: r8c2=4
Naked Single: r6c9=5
Full House: r6c7=8
Full House: r8c9=6
Full House: r8c7=5
Naked Single: r5c8=9
Full House: r5c7=3
Full House: r7c7=9
Full House: r7c8=1
|
easy
| null |
normal_sudoku_2978
|
1738649259..1..863.6.359174...4..6..7.....4383..51.2.....24.7....7...3.2.....15..
|
173864925954172863268359174829437651715926438346518297591243786487695312632781549
|
normal_sudoku_2978
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
1 7 3 8 6 4 9 2 5
9 . . 1 . . 8 6 3
. 6 . 3 5 9 1 7 4
. . . 4 . . 6 . .
7 . . . . . 4 3 8
3 . . 5 1 . 2 . .
. . . 2 4 . 7 . .
. . 7 . . . 3 . 2
. . . . . 1 5 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
173864925954172863268359174829437651715926438346518297591243786487695312632781549 #1 Medium (308)
Naked Single: r6c8=9
Naked Single: r6c9=7
Naked Single: r4c9=1
Full House: r4c8=5
Hidden Single: r9c4=7
Locked Triple: 2,8,9 in r4c123 => r4c56,r5c23<>2, r4c56,r6c23<>8, r4c5,r5c23<>9
Naked Single: r6c2=4
Naked Single: r6c3=6
Full House: r6c6=8
Hidden Single: r2c3=4
Hidden Single: r2c2=5
Naked Single: r5c2=1
Naked Single: r5c3=5
Hidden Single: r7c3=1
Naked Single: r7c8=8
Naked Single: r9c8=4
Full House: r8c8=1
Hidden Single: r8c1=4
Hidden Single: r8c6=5
Hidden Single: r7c1=5
Hidden Single: r8c4=6
Full House: r5c4=9
Naked Single: r7c6=3
Naked Single: r5c5=2
Full House: r5c6=6
Naked Single: r4c6=7
Full House: r2c6=2
Full House: r2c5=7
Full House: r4c5=3
Naked Single: r7c2=9
Full House: r7c9=6
Full House: r9c9=9
Naked Single: r8c2=8
Full House: r8c5=9
Full House: r9c5=8
Naked Single: r4c2=2
Full House: r9c2=3
Naked Single: r9c3=2
Full House: r9c1=6
Naked Single: r4c1=8
Full House: r3c1=2
Full House: r3c3=8
Full House: r4c3=9
|
medium
| null |
normal_sudoku_183
|
97.13.6..2....41....1...7...3.548.91.1.279386.9.3615..129.53.67......91..6.91..53
|
974135628286794135351826749637548291415279386892361574129453867543687912768912453
|
normal_sudoku_183
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
9 7 . 1 3 . 6 . .
2 . . . . 4 1 . .
. . 1 . . . 7 . .
. 3 . 5 4 8 . 9 1
. 1 . 2 7 9 3 8 6
. 9 . 3 6 1 5 . .
1 2 9 . 5 3 . 6 7
. . . . . . 9 1 .
. 6 . 9 1 . . 5 3
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
974135628286794135351826749637548291415279386892361574129453867543687912768912453 #1 Easy (176)
Naked Single: r4c7=2
Naked Single: r2c8=3
Naked Single: r6c9=4
Full House: r6c8=7
Naked Single: r6c1=8
Full House: r6c3=2
Hidden Single: r2c4=7
Hidden Single: r9c6=2
Naked Single: r1c6=5
Naked Single: r8c5=8
Naked Single: r3c6=6
Full House: r8c6=7
Naked Single: r2c5=9
Full House: r3c5=2
Full House: r3c4=8
Naked Single: r7c4=4
Full House: r7c7=8
Full House: r8c4=6
Full House: r9c7=4
Full House: r8c9=2
Naked Single: r3c8=4
Full House: r1c8=2
Naked Single: r9c1=7
Full House: r9c3=8
Naked Single: r1c9=8
Full House: r1c3=4
Naked Single: r3c2=5
Naked Single: r4c1=6
Full House: r4c3=7
Naked Single: r2c9=5
Full House: r3c9=9
Full House: r3c1=3
Naked Single: r5c3=5
Full House: r5c1=4
Full House: r8c1=5
Naked Single: r2c2=8
Full House: r2c3=6
Full House: r8c2=4
Full House: r8c3=3
|
easy
| null |
normal_sudoku_1750
|
.8....1.7...7....8.1.28.5....3...8....21..6..9..8.3.4...4.7...667..5....3.14.....
|
489635127235714968716289534163542879842197653957863241524978316678351492391426785
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 8 . . . . 1 . 7
. . . 7 . . . . 8
. 1 . 2 8 . 5 . .
. . 3 . . . 8 . .
. . 2 1 . . 6 . .
9 . . 8 . 3 . 4 .
. . 4 . 7 . . . 6
6 7 . . 5 . . . .
3 . 1 4 . . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
489635127235714968716289534163542879842197653957863241524978316678351492391426785 #1 Easy (306)
Hidden Single: r5c1=8
Hidden Single: r2c2=3
Hidden Single: r6c9=1
Hidden Single: r4c1=1
Hidden Single: r2c5=1
Hidden Single: r8c3=8
Hidden Single: r1c5=3
Hidden Single: r3c1=7
Hidden Single: r6c3=7
Naked Single: r6c7=2
Naked Single: r6c5=6
Full House: r6c2=5
Naked Single: r5c2=4
Full House: r4c2=6
Naked Single: r5c5=9
Naked Single: r4c4=5
Naked Single: r9c5=2
Full House: r4c5=4
Naked Single: r4c9=9
Naked Single: r5c6=7
Full House: r4c6=2
Full House: r4c8=7
Naked Single: r9c2=9
Full House: r7c2=2
Full House: r7c1=5
Naked Single: r9c9=5
Naked Single: r9c7=7
Naked Single: r5c9=3
Full House: r5c8=5
Naked Single: r9c8=8
Full House: r9c6=6
Naked Single: r3c9=4
Full House: r8c9=2
Naked Single: r2c7=9
Naked Single: r3c6=9
Naked Single: r7c7=3
Full House: r8c7=4
Naked Single: r1c4=6
Naked Single: r3c3=6
Full House: r3c8=3
Naked Single: r8c6=1
Naked Single: r7c4=9
Full House: r8c4=3
Full House: r7c6=8
Full House: r8c8=9
Full House: r7c8=1
Naked Single: r1c8=2
Full House: r2c8=6
Naked Single: r2c3=5
Full House: r1c3=9
Naked Single: r1c1=4
Full House: r1c6=5
Full House: r2c6=4
Full House: r2c1=2
|
easy
|
Basic 9x9 Sudoku 1750
|
normal_sudoku_223
|
237.4..5.689.5.3.1451..6..279318.....2869...7.4672.89..14.....6..5......8.2419...
|
237841659689257341451936782793185264528694137146723895314578926975362418862419573
|
normal_sudoku_223
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
2 3 7 . 4 . . 5 .
6 8 9 . 5 . 3 . 1
4 5 1 . . 6 . . 2
7 9 3 1 8 . . . .
. 2 8 6 9 . . . 7
. 4 6 7 2 . 8 9 .
. 1 4 . . . . . 6
. . 5 . . . . . .
8 . 2 4 1 9 . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
237841659689257341451936782793185264528694137146723895314578926975362418862419573 #1 Easy (220)
Naked Single: r2c4=2
Naked Single: r2c6=7
Full House: r2c8=4
Naked Single: r3c5=3
Naked Single: r7c5=7
Full House: r8c5=6
Naked Single: r8c2=7
Full House: r9c2=6
Hidden Single: r1c6=1
Hidden Single: r6c1=1
Full House: r5c1=5
Hidden Single: r1c7=6
Hidden Single: r4c8=6
Hidden Single: r7c4=5
Hidden Single: r4c7=2
Naked Single: r7c7=9
Naked Single: r3c7=7
Naked Single: r7c1=3
Full House: r8c1=9
Naked Single: r3c8=8
Full House: r1c9=9
Full House: r3c4=9
Full House: r1c4=8
Full House: r8c4=3
Naked Single: r9c7=5
Naked Single: r7c8=2
Full House: r7c6=8
Full House: r8c6=2
Naked Single: r9c9=3
Full House: r9c8=7
Naked Single: r8c8=1
Full House: r5c8=3
Naked Single: r6c9=5
Full House: r6c6=3
Naked Single: r8c7=4
Full House: r5c7=1
Full House: r5c6=4
Full House: r4c9=4
Full House: r8c9=8
Full House: r4c6=5
|
easy
| null |
normal_sudoku_2332
|
..7.3946.6.9.4.3.73487..5292.....1..8..........5.87..298..5.......178..676.4..8..
|
157239468629845317348716529273964185896521734415387692984653271532178946761492853
|
normal_sudoku_2332
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 7 . 3 9 4 6 .
6 . 9 . 4 . 3 . 7
3 4 8 7 . . 5 2 9
2 . . . . . 1 . .
8 . . . . . . . .
. . 5 . 8 7 . . 2
9 8 . . 5 . . . .
. . . 1 7 8 . . 6
7 6 . 4 . . 8 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
157239468629845317348716529273964185896521734415387692984653271532178946761492853 #1 Easy (254)
Hidden Single: r9c5=9
Naked Single: r4c5=6
Naked Single: r3c5=1
Full House: r3c6=6
Full House: r5c5=2
Hidden Single: r5c3=6
Hidden Single: r6c7=6
Hidden Single: r7c4=6
Hidden Single: r5c6=1
Hidden Single: r4c6=4
Naked Single: r4c3=3
Hidden Single: r6c1=4
Naked Single: r8c1=5
Full House: r1c1=1
Naked Single: r1c9=8
Full House: r2c8=1
Naked Single: r4c9=5
Naked Single: r4c4=9
Naked Single: r4c2=7
Full House: r4c8=8
Naked Single: r6c4=3
Full House: r5c4=5
Naked Single: r5c2=9
Full House: r6c2=1
Full House: r6c8=9
Naked Single: r1c4=2
Full House: r1c2=5
Full House: r2c4=8
Full House: r2c6=5
Full House: r2c2=2
Full House: r8c2=3
Naked Single: r5c7=7
Naked Single: r8c8=4
Naked Single: r7c7=2
Full House: r8c7=9
Full House: r8c3=2
Naked Single: r5c8=3
Full House: r5c9=4
Naked Single: r7c6=3
Full House: r9c6=2
Naked Single: r9c3=1
Full House: r7c3=4
Naked Single: r7c8=7
Full House: r9c8=5
Full House: r7c9=1
Full House: r9c9=3
|
easy
| null |
normal_sudoku_415
|
....8..15..4.56.....82.7.3.....9.65.63.....98...........192..63..3....7.8.5...2..
|
326489715174356982958217436482193657637542198519678324741925863293864571865731249
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . 8 . . 1 5
. . 4 . 5 6 . . .
. . 8 2 . 7 . 3 .
. . . . 9 . 6 5 .
6 3 . . . . . 9 8
. . . . . . . . .
. . 1 9 2 . . 6 3
. . 3 . . . . 7 .
8 . 5 . . . 2 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
326489715174356982958217436482193657637542198519678324741925863293864571865731249 #1 Easy (326)
Naked Single: r9c8=4
Naked Single: r6c8=2
Full House: r2c8=8
Hidden Single: r3c9=6
Hidden Single: r1c6=9
Hidden Single: r6c7=3
Hidden Single: r1c3=6
Hidden Single: r2c9=2
Hidden Single: r6c3=9
Hidden Single: r9c5=3
Naked Single: r9c6=1
Naked Single: r9c9=9
Naked Single: r8c9=1
Hidden Single: r4c6=3
Hidden Single: r9c4=7
Full House: r9c2=6
Hidden Single: r5c7=1
Hidden Single: r5c6=2
Naked Single: r5c3=7
Full House: r4c3=2
Naked Single: r5c5=4
Full House: r5c4=5
Naked Single: r3c5=1
Naked Single: r8c5=6
Full House: r6c5=7
Naked Single: r6c6=8
Naked Single: r2c4=3
Full House: r1c4=4
Naked Single: r6c9=4
Full House: r4c9=7
Naked Single: r4c4=1
Full House: r6c4=6
Full House: r8c4=8
Naked Single: r1c7=7
Naked Single: r4c1=4
Full House: r4c2=8
Naked Single: r8c7=5
Full House: r7c7=8
Naked Single: r1c2=2
Full House: r1c1=3
Naked Single: r2c7=9
Full House: r3c7=4
Naked Single: r7c1=7
Naked Single: r8c6=4
Full House: r7c6=5
Full House: r7c2=4
Naked Single: r2c1=1
Full House: r2c2=7
Naked Single: r8c2=9
Full House: r8c1=2
Naked Single: r6c1=5
Full House: r3c1=9
Full House: r3c2=5
Full House: r6c2=1
|
easy
|
Basic 9x9 Sudoku 415
|
normal_sudoku_2615
|
4.38.........62....6..7....6.8...3...24...1.9..142..5.......98529..5..1.83....7..
|
413895267789162534562374891658719342324586179971423658146237985297658413835941726
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 . 3 8 . . . . .
. . . . 6 2 . . .
. 6 . . 7 . . . .
6 . 8 . . . 3 . .
. 2 4 . . . 1 . 9
. . 1 4 2 . . 5 .
. . . . . . 9 8 5
2 9 . . 5 . . 1 .
8 3 . . . . 7 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
413895267789162534562374891658719342324586179971423658146237985297658413835941726 #1 Easy (222)
Naked Single: r6c2=7
Naked Single: r4c2=5
Naked Single: r1c2=1
Naked Single: r5c1=3
Full House: r6c1=9
Naked Single: r1c5=9
Naked Single: r2c2=8
Full House: r7c2=4
Naked Single: r5c5=8
Naked Single: r3c1=5
Naked Single: r1c6=5
Naked Single: r4c5=1
Naked Single: r2c1=7
Full House: r7c1=1
Naked Single: r7c5=3
Full House: r9c5=4
Naked Single: r2c3=9
Full House: r3c3=2
Hidden Single: r3c6=4
Naked Single: r3c7=8
Naked Single: r6c7=6
Naked Single: r1c7=2
Naked Single: r5c8=7
Naked Single: r6c6=3
Full House: r6c9=8
Naked Single: r8c7=4
Full House: r2c7=5
Naked Single: r1c8=6
Full House: r1c9=7
Naked Single: r5c6=6
Full House: r5c4=5
Naked Single: r9c8=2
Naked Single: r7c6=7
Naked Single: r4c8=4
Full House: r4c9=2
Naked Single: r9c9=6
Full House: r8c9=3
Naked Single: r4c6=9
Full House: r4c4=7
Naked Single: r7c3=6
Full House: r7c4=2
Naked Single: r8c4=6
Naked Single: r8c6=8
Full House: r9c6=1
Full House: r8c3=7
Full House: r9c3=5
Full House: r9c4=9
Naked Single: r2c8=3
Full House: r3c8=9
Naked Single: r3c9=1
Full House: r2c9=4
Full House: r2c4=1
Full House: r3c4=3
|
easy
|
Basic 9x9 Sudoku 2615
|
normal_sudoku_918
|
5469.7.8.217..8.9.893..5....8.5...7997..8..5462...981.168.925....9.....8..28..9..
|
546927381217638495893145762384561279971283654625479813168392547439756128752814936
|
normal_sudoku_918
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
5 4 6 9 . 7 . 8 .
2 1 7 . . 8 . 9 .
8 9 3 . . 5 . . .
. 8 . 5 . . . 7 9
9 7 . . 8 . . 5 4
6 2 . . . 9 8 1 .
1 6 8 . 9 2 5 . .
. . 9 . . . . . 8
. . 2 8 . . 9 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
546927381217638495893145762384561279971283654625479813168392547439756128752814936 #1 Medium (494)
Naked Single: r5c3=1
Naked Single: r6c9=3
Naked Single: r4c3=4
Full House: r6c3=5
Full House: r4c1=3
Naked Single: r7c9=7
Hidden Single: r2c9=5
Hidden Single: r3c7=7
Locked Candidates Type 1 (Pointing): 3 in b3 => r8c7<>3
Locked Candidates Type 1 (Pointing): 2 in b6 => r18c7<>2
Hidden Single: r8c8=2
Locked Candidates Type 1 (Pointing): 6 in b6 => r28c7<>6
Locked Candidates Type 1 (Pointing): 6 in b3 => r3c45<>6
Locked Candidates Type 1 (Pointing): 6 in b9 => r9c56<>6
Locked Candidates Type 2 (Claiming): 4 in c6 => r78c4,r89c5<>4
Naked Single: r7c4=3
Full House: r7c8=4
Naked Single: r3c8=6
Full House: r9c8=3
Naked Single: r8c7=1
Full House: r9c9=6
Naked Single: r9c2=5
Full House: r8c2=3
Naked Single: r1c7=3
Naked Single: r2c7=4
Naked Single: r2c4=6
Full House: r2c5=3
Naked Single: r5c4=2
Naked Single: r8c4=7
Naked Single: r5c7=6
Full House: r4c7=2
Full House: r5c6=3
Naked Single: r6c4=4
Full House: r3c4=1
Full House: r6c5=7
Naked Single: r8c1=4
Full House: r9c1=7
Naked Single: r9c5=1
Full House: r9c6=4
Naked Single: r1c5=2
Full House: r1c9=1
Full House: r3c9=2
Full House: r3c5=4
Naked Single: r8c6=6
Full House: r4c6=1
Full House: r4c5=6
Full House: r8c5=5
|
medium
| null |
normal_sudoku_2070
|
....7..4.4...2....7953412863.8967124...432.....6158397.81.9...26...15.......8.53.
|
812576943463829715795341286358967124179432658246158397581793462634215879927684531
|
normal_sudoku_2070
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . 7 . . 4 .
4 . . . 2 . . . .
7 9 5 3 4 1 2 8 6
3 . 8 9 6 7 1 2 4
. . . 4 3 2 . . .
. . 6 1 5 8 3 9 7
. 8 1 . 9 . . . 2
6 . . . 1 5 . . .
. . . . 8 . 5 3 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
812576943463829715795341286358967124179432658246158397581793462634215879927684531 #1 Easy (160)
Full House: r4c2=5
Naked Single: r6c1=2
Full House: r6c2=4
Naked Single: r2c3=3
Naked Single: r7c1=5
Naked Single: r1c7=9
Naked Single: r8c8=7
Naked Single: r9c1=9
Naked Single: r1c3=2
Naked Single: r1c6=6
Naked Single: r2c7=7
Naked Single: r7c8=6
Naked Single: r8c4=2
Naked Single: r5c1=1
Full House: r1c1=8
Naked Single: r9c9=1
Naked Single: r8c3=4
Naked Single: r1c2=1
Full House: r2c2=6
Naked Single: r2c6=9
Naked Single: r9c6=4
Full House: r7c6=3
Naked Single: r5c8=5
Full House: r2c8=1
Naked Single: r7c4=7
Full House: r7c7=4
Full House: r9c4=6
Naked Single: r8c2=3
Naked Single: r5c2=7
Full House: r5c3=9
Full House: r9c3=7
Full House: r9c2=2
Naked Single: r1c4=5
Full House: r1c9=3
Full House: r2c9=5
Full House: r2c4=8
Naked Single: r8c7=8
Full House: r5c7=6
Full House: r5c9=8
Full House: r8c9=9
|
easy
| null |
normal_sudoku_1103
|
48..15..7.1....4933....48151.5843...638.921.4..41...3.8.34...........78.7.1.893..
|
489315627517268493362974815125843976638792154974156238893427561246531789751689342
|
normal_sudoku_1103
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 8 . . 1 5 . . 7
. 1 . . . . 4 9 3
3 . . . . 4 8 1 5
1 . 5 8 4 3 . . .
6 3 8 . 9 2 1 . 4
. . 4 1 . . . 3 .
8 . 3 4 . . . . .
. . . . . . 7 8 .
7 . 1 . 8 9 3 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
489315627517268493362974815125843976638792154974156238893427561246531789751689342 #1 Easy (328)
Hidden Single: r1c4=3
Hidden Single: r2c1=5
Hidden Single: r6c9=8
Hidden Single: r8c2=4
Hidden Single: r9c8=4
Hidden Single: r2c6=8
Hidden Single: r8c5=3
Hidden Single: r1c3=9
Hidden Single: r3c4=9
Hidden Single: r8c4=5
Naked Single: r5c4=7
Full House: r5c8=5
Naked Single: r6c6=6
Full House: r6c5=5
Naked Single: r8c6=1
Full House: r7c6=7
Hidden Single: r9c2=5
Hidden Single: r4c8=7
Hidden Single: r6c2=7
Hidden Single: r7c7=5
Hidden Single: r7c9=1
Hidden Single: r7c2=9
Naked Single: r4c2=2
Full House: r3c2=6
Full House: r6c1=9
Full House: r8c1=2
Full House: r6c7=2
Full House: r8c3=6
Full House: r8c9=9
Naked Single: r1c7=6
Full House: r1c8=2
Full House: r4c7=9
Full House: r4c9=6
Full House: r7c8=6
Full House: r9c9=2
Full House: r7c5=2
Full House: r9c4=6
Full House: r2c4=2
Naked Single: r3c5=7
Full House: r2c5=6
Full House: r2c3=7
Full House: r3c3=2
|
easy
| null |
normal_sudoku_1505
|
6.9.4..155139...6....1.6......29....192.3.65.43..6.2.9986...1..2.1689..33.7.1.896
|
629348715513927468874156932768295341192834657435761289986573124241689573357412896
|
normal_sudoku_1505
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
6 . 9 . 4 . . 1 5
5 1 3 9 . . . 6 .
. . . 1 . 6 . . .
. . . 2 9 . . . .
1 9 2 . 3 . 6 5 .
4 3 . . 6 . 2 . 9
9 8 6 . . . 1 . .
2 . 1 6 8 9 . . 3
3 . 7 . 1 . 8 9 6
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
629348715513927468874156932768295341192834657435761289986573124241689573357412896 #1 Easy (220)
Hidden Single: r3c5=5
Hidden Single: r6c6=1
Hidden Single: r4c2=6
Hidden Single: r4c9=1
Hidden Single: r3c3=4
Hidden Single: r8c7=5
Naked Single: r8c2=4
Full House: r8c8=7
Full House: r9c2=5
Naked Single: r6c8=8
Naked Single: r9c4=4
Full House: r9c6=2
Naked Single: r6c3=5
Full House: r4c3=8
Full House: r6c4=7
Full House: r4c1=7
Full House: r3c1=8
Naked Single: r7c5=7
Full House: r2c5=2
Naked Single: r5c4=8
Naked Single: r1c4=3
Full House: r7c4=5
Full House: r7c6=3
Naked Single: r5c6=4
Full House: r4c6=5
Full House: r5c9=7
Naked Single: r1c7=7
Naked Single: r3c9=2
Naked Single: r1c2=2
Full House: r1c6=8
Full House: r3c2=7
Full House: r2c6=7
Naked Single: r2c7=4
Full House: r2c9=8
Full House: r7c9=4
Full House: r7c8=2
Naked Single: r3c8=3
Full House: r3c7=9
Full House: r4c7=3
Full House: r4c8=4
|
easy
| null |
normal_sudoku_1238
|
8...........4...8.7..839.2.1279685343985.4..2....2....971.....8.8.19...52..6871..
|
842716953639452781715839426127968534398574612564321897971245368486193275253687149
|
normal_sudoku_1238
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
8 . . . . . . . .
. . . 4 . . . 8 .
7 . . 8 3 9 . 2 .
1 2 7 9 6 8 5 3 4
3 9 8 5 . 4 . . 2
. . . . 2 . . . .
9 7 1 . . . . . 8
. 8 . 1 9 . . . 5
2 . . 6 8 7 1 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
842716953639452781715839426127968534398574612564321897971245368486193275253687149 #1 Easy (226)
Hidden Single: r6c7=8
Hidden Single: r1c8=5
Hidden Single: r7c5=4
Naked Single: r7c8=6
Hidden Single: r7c6=5
Hidden Single: r2c5=5
Naked Single: r2c1=6
Naked Single: r8c1=4
Full House: r6c1=5
Naked Single: r8c8=7
Naked Single: r5c8=1
Naked Single: r5c5=7
Full House: r1c5=1
Full House: r5c7=6
Naked Single: r6c8=9
Full House: r6c9=7
Full House: r9c8=4
Naked Single: r6c4=3
Full House: r6c6=1
Naked Single: r2c6=2
Naked Single: r3c7=4
Naked Single: r7c4=2
Full House: r1c4=7
Full House: r1c6=6
Full House: r8c6=3
Full House: r7c7=3
Naked Single: r3c3=5
Naked Single: r8c3=6
Full House: r8c7=2
Full House: r9c9=9
Naked Single: r1c7=9
Full House: r2c7=7
Naked Single: r3c2=1
Full House: r3c9=6
Naked Single: r9c3=3
Full House: r9c2=5
Naked Single: r6c3=4
Full House: r6c2=6
Naked Single: r1c9=3
Full House: r2c9=1
Naked Single: r2c2=3
Full House: r2c3=9
Full House: r1c3=2
Full House: r1c2=4
|
easy
| null |
normal_sudoku_4871
|
..1.3.48..4....71.8.......3.3..1...4......15.6....9.....9..52.7.7..8...12..6.....
|
921736485345298716867154923532817694798463152614529378189345267476982531253671849
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 1 . 3 . 4 8 .
. 4 . . . . 7 1 .
8 . . . . . . . 3
. 3 . . 1 . . . 4
. . . . . . 1 5 .
6 . . . . 9 . . .
. . 9 . . 5 2 . 7
. 7 . . 8 . . . 1
2 . . 6 . . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
921736485345298716867154923532817694798463152614529378189345267476982531253671849 #1 Easy (324)
Naked Single: r7c5=4
Hidden Single: r6c2=1
Hidden Single: r7c2=8
Naked Single: r9c2=5
Hidden Single: r7c1=1
Naked Single: r7c4=3
Full House: r7c8=6
Naked Single: r8c6=2
Naked Single: r8c4=9
Naked Single: r9c5=7
Full House: r9c6=1
Hidden Single: r8c3=6
Hidden Single: r8c7=5
Hidden Single: r3c4=1
Hidden Single: r5c6=3
Hidden Single: r3c6=4
Hidden Single: r3c3=7
Hidden Single: r3c5=5
Naked Single: r6c5=2
Naked Single: r5c5=6
Full House: r2c5=9
Naked Single: r6c9=8
Naked Single: r6c7=3
Naked Single: r9c9=9
Naked Single: r6c8=7
Naked Single: r5c9=2
Naked Single: r9c7=8
Naked Single: r4c8=9
Full House: r4c7=6
Full House: r3c7=9
Naked Single: r5c2=9
Naked Single: r3c8=2
Full House: r3c2=6
Full House: r1c2=2
Naked Single: r1c4=7
Naked Single: r1c6=6
Naked Single: r1c9=5
Full House: r1c1=9
Full House: r2c9=6
Naked Single: r2c6=8
Full House: r2c4=2
Full House: r4c6=7
Naked Single: r4c1=5
Naked Single: r2c1=3
Full House: r2c3=5
Naked Single: r4c4=8
Full House: r4c3=2
Naked Single: r6c3=4
Full House: r6c4=5
Full House: r5c4=4
Naked Single: r8c1=4
Full House: r5c1=7
Full House: r5c3=8
Full House: r9c3=3
Full House: r8c8=3
Full House: r9c8=4
|
easy
|
Basic 9x9 Sudoku 4871
|
normal_sudoku_2716
|
....96..39.7.5816...4.12...1.9534..8586127...4.3869.1...824......5.83.416..97....
|
251796483937458162864312759179534628586127394423869517318245976795683241642971835
|
normal_sudoku_2716
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . 9 6 . . 3
9 . 7 . 5 8 1 6 .
. . 4 . 1 2 . . .
1 . 9 5 3 4 . . 8
5 8 6 1 2 7 . . .
4 . 3 8 6 9 . 1 .
. . 8 2 4 . . . .
. . 5 . 8 3 . 4 1
6 . . 9 7 . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
251796483937458162864312759179534628586127394423869517318245976795683241642971835 #1 Easy (220)
Naked Single: r8c4=6
Hidden Single: r4c7=6
Hidden Single: r9c2=4
Hidden Single: r3c2=6
Hidden Single: r7c9=6
Hidden Single: r1c2=5
Hidden Single: r1c3=1
Full House: r9c3=2
Naked Single: r8c1=7
Naked Single: r9c9=5
Naked Single: r7c1=3
Naked Single: r8c2=9
Full House: r7c2=1
Full House: r8c7=2
Naked Single: r9c6=1
Full House: r7c6=5
Naked Single: r3c1=8
Full House: r1c1=2
Full House: r2c2=3
Naked Single: r2c4=4
Full House: r2c9=2
Naked Single: r1c4=7
Full House: r3c4=3
Naked Single: r6c9=7
Naked Single: r1c8=8
Full House: r1c7=4
Naked Single: r3c9=9
Full House: r5c9=4
Naked Single: r4c8=2
Full House: r4c2=7
Full House: r6c2=2
Full House: r6c7=5
Naked Single: r9c8=3
Full House: r9c7=8
Naked Single: r3c7=7
Full House: r3c8=5
Naked Single: r5c8=9
Full House: r5c7=3
Full House: r7c7=9
Full House: r7c8=7
|
easy
| null |
normal_sudoku_2144
|
.9341..27..7.....15.1..79...75..3...3168.42....9.5.3..138....4675264....964.387.2
|
893415627627389451541267983475923168316874295289156374138792546752641839964538712
|
normal_sudoku_2144
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 9 3 4 1 . . 2 7
. . 7 . . . . . 1
5 . 1 . . 7 9 . .
. 7 5 . . 3 . . .
3 1 6 8 . 4 2 . .
. . 9 . 5 . 3 . .
1 3 8 . . . . 4 6
7 5 2 6 4 . . . .
9 6 4 . 3 8 7 . 2
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
893415627627389451541267983475923168316874295289156374138792546752641839964538712 #1 Easy (160)
Naked Single: r7c7=5
Naked Single: r9c8=1
Full House: r9c4=5
Naked Single: r8c7=8
Naked Single: r1c7=6
Naked Single: r1c1=8
Full House: r1c6=5
Naked Single: r2c7=4
Full House: r4c7=1
Naked Single: r2c2=2
Naked Single: r2c1=6
Full House: r3c2=4
Full House: r6c2=8
Naked Single: r2c6=9
Naked Single: r6c9=4
Naked Single: r2c4=3
Naked Single: r2c5=8
Full House: r2c8=5
Naked Single: r7c6=2
Naked Single: r8c6=1
Full House: r6c6=6
Naked Single: r6c1=2
Full House: r4c1=4
Naked Single: r3c4=2
Full House: r3c5=6
Naked Single: r6c8=7
Full House: r6c4=1
Naked Single: r4c4=9
Full House: r7c4=7
Full House: r7c5=9
Naked Single: r5c8=9
Naked Single: r4c5=2
Full House: r5c5=7
Full House: r5c9=5
Naked Single: r4c9=8
Full House: r4c8=6
Naked Single: r8c8=3
Full House: r3c8=8
Full House: r3c9=3
Full House: r8c9=9
|
easy
| null |
normal_sudoku_2666
|
...6.....5.1..3.8...37..95..7....8.4..8..2.....6....2..3..45...72.3..59..8.2.74.1
|
297658143541923687863714952972536814458172369316489725139845276724361598685297431
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . 6 . . . . .
5 . 1 . . 3 . 8 .
. . 3 7 . . 9 5 .
. 7 . . . . 8 . 4
. . 8 . . 2 . . .
. . 6 . . . . 2 .
. 3 . . 4 5 . . .
7 2 . 3 . . 5 9 .
. 8 . 2 . 7 4 . 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
297658143541923687863714952972536814458172369316489725139845276724361598685297431 #1 Easy (258)
Naked Single: r7c3=9
Naked Single: r8c3=4
Naked Single: r9c1=6
Naked Single: r9c3=5
Full House: r7c1=1
Naked Single: r9c5=9
Full House: r9c8=3
Naked Single: r4c3=2
Full House: r1c3=7
Naked Single: r7c4=8
Naked Single: r2c5=2
Hidden Single: r1c5=5
Hidden Single: r1c8=4
Naked Single: r1c2=9
Hidden Single: r8c9=8
Hidden Single: r4c4=5
Hidden Single: r1c7=1
Naked Single: r1c6=8
Naked Single: r1c1=2
Full House: r1c9=3
Naked Single: r3c5=1
Naked Single: r3c6=4
Full House: r2c4=9
Naked Single: r8c5=6
Full House: r8c6=1
Naked Single: r3c1=8
Naked Single: r3c2=6
Full House: r2c2=4
Full House: r3c9=2
Naked Single: r4c5=3
Naked Single: r6c6=9
Full House: r4c6=6
Naked Single: r4c1=9
Full House: r4c8=1
Naked Single: r5c5=7
Full House: r6c5=8
Naked Single: r5c8=6
Full House: r7c8=7
Naked Single: r5c7=3
Naked Single: r7c9=6
Full House: r7c7=2
Naked Single: r5c1=4
Full House: r6c1=3
Naked Single: r6c7=7
Full House: r2c7=6
Full House: r2c9=7
Naked Single: r5c4=1
Full House: r6c4=4
Naked Single: r6c9=5
Full House: r5c9=9
Full House: r5c2=5
Full House: r6c2=1
|
easy
|
Basic 9x9 Sudoku 2666
|
normal_sudoku_1695
|
.9.1..832.5.283469.3.9..571.7.31.62..124.835..8.7.....32.69...5.6.527....4.83....
|
496175832157283469238946571574319628912468357683752914321694785869527143745831296
|
normal_sudoku_1695
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 9 . 1 . . 8 3 2
. 5 . 2 8 3 4 6 9
. 3 . 9 . . 5 7 1
. 7 . 3 1 . 6 2 .
. 1 2 4 . 8 3 5 .
. 8 . 7 . . . . .
3 2 . 6 9 . . . 5
. 6 . 5 2 7 . . .
. 4 . 8 3 . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
496175832157283469238946571574319628912468357683752914321694785869527143745831296 #1 Easy (156)
Naked Single: r5c9=7
Naked Single: r6c9=4
Naked Single: r5c5=6
Full House: r5c1=9
Naked Single: r9c6=1
Full House: r7c6=4
Naked Single: r9c9=6
Naked Single: r4c9=8
Full House: r8c9=3
Naked Single: r3c5=4
Naked Single: r6c5=5
Full House: r1c5=7
Naked Single: r9c8=9
Naked Single: r3c6=6
Full House: r1c6=5
Naked Single: r4c6=9
Full House: r6c6=2
Naked Single: r6c1=6
Naked Single: r6c8=1
Full House: r6c7=9
Full House: r6c3=3
Naked Single: r8c7=1
Naked Single: r3c3=8
Full House: r3c1=2
Naked Single: r1c1=4
Full House: r1c3=6
Naked Single: r7c8=8
Full House: r8c8=4
Naked Single: r7c7=7
Full House: r7c3=1
Full House: r9c7=2
Naked Single: r8c1=8
Full House: r8c3=9
Naked Single: r4c1=5
Full House: r4c3=4
Naked Single: r2c3=7
Full House: r2c1=1
Full House: r9c1=7
Full House: r9c3=5
|
easy
| null |
normal_sudoku_5903
|
.5.62...46.........3..419.6.7.8.62454.5.....8..8.5..7..1..8.5.75.72634...4.175..2
|
751629384694538721832741956173896245425317698968452173216984537587263419349175862
|
normal_sudoku_5903
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 5 . 6 2 . . . 4
6 . . . . . . . .
. 3 . . 4 1 9 . 6
. 7 . 8 . 6 2 4 5
4 . 5 . . . . . 8
. . 8 . 5 . . 7 .
. 1 . . 8 . 5 . 7
5 . 7 2 6 3 4 . .
. 4 . 1 7 5 . . 2
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
751629384694538721832741956173896245425317698968452173216984537587263419349175862 #1 Easy (216)
Naked Single: r3c3=2
Hidden Single: r2c3=4
Hidden Single: r2c8=2
Hidden Single: r7c1=2
Hidden Single: r2c4=5
Naked Single: r3c4=7
Naked Single: r3c1=8
Full House: r3c8=5
Naked Single: r2c2=9
Naked Single: r1c3=1
Full House: r1c1=7
Naked Single: r2c5=3
Naked Single: r2c6=8
Full House: r1c6=9
Naked Single: r8c2=8
Naked Single: r2c9=1
Full House: r2c7=7
Naked Single: r7c6=4
Full House: r7c4=9
Naked Single: r8c9=9
Full House: r6c9=3
Full House: r8c8=1
Naked Single: r6c6=2
Full House: r5c6=7
Naked Single: r5c4=3
Full House: r6c4=4
Naked Single: r6c2=6
Full House: r5c2=2
Naked Single: r6c7=1
Full House: r6c1=9
Naked Single: r5c7=6
Full House: r5c8=9
Full House: r5c5=1
Full House: r4c5=9
Naked Single: r4c3=3
Full House: r4c1=1
Full House: r9c1=3
Naked Single: r7c3=6
Full House: r7c8=3
Full House: r9c3=9
Naked Single: r9c7=8
Full House: r1c7=3
Full House: r1c8=8
Full House: r9c8=6
|
easy
| null |
normal_sudoku_387
|
.81.92.45...3...1...6..129..5..2.4816...4.95........26.4..5...9..3..7.6..6.23..7.
|
381792645925364718476581293759623481632148957814975326247856139593417862168239574
|
normal_sudoku_387
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 8 1 . 9 2 . 4 5
. . . 3 . . . 1 .
. . 6 . . 1 2 9 .
. 5 . . 2 . 4 8 1
6 . . . 4 . 9 5 .
. . . . . . . 2 6
. 4 . . 5 . . . 9
. . 3 . . 7 . 6 .
. 6 . 2 3 . . 7 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
381792645925364718476581293759623481632148957814975326247856139593417862168239574 #1 Easy (202)
Full House: r7c8=3
Hidden Single: r2c5=6
Naked Single: r1c4=7
Naked Single: r1c1=3
Full House: r1c7=6
Naked Single: r3c5=8
Naked Single: r3c2=7
Naked Single: r8c5=1
Full House: r6c5=7
Naked Single: r3c9=3
Naked Single: r6c7=3
Full House: r5c9=7
Naked Single: r2c9=8
Full House: r2c7=7
Naked Single: r9c9=4
Full House: r8c9=2
Naked Single: r8c2=9
Naked Single: r2c2=2
Naked Single: r6c2=1
Full House: r5c2=3
Naked Single: r5c6=8
Naked Single: r5c3=2
Full House: r5c4=1
Naked Single: r7c6=6
Naked Single: r9c6=9
Naked Single: r7c4=8
Full House: r8c4=4
Naked Single: r4c6=3
Naked Single: r6c6=5
Full House: r2c6=4
Full House: r3c4=5
Full House: r3c1=4
Naked Single: r7c3=7
Naked Single: r7c7=1
Full House: r7c1=2
Naked Single: r6c4=9
Full House: r4c4=6
Naked Single: r4c3=9
Full House: r4c1=7
Naked Single: r6c1=8
Full House: r6c3=4
Naked Single: r2c3=5
Full House: r2c1=9
Full House: r9c3=8
Naked Single: r8c1=5
Full House: r8c7=8
Full House: r9c7=5
Full House: r9c1=1
|
easy
| null |
normal_sudoku_5241
|
.5...468....1..9..2.3...5...145.7.9.5......373..........76.5...1..4.8.59.8..1..4.
|
751924683846153972293786514614537298529861437378249165437695821162478359985312746
|
01_file1
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 5 . . . 4 6 8 .
. . . 1 . . 9 . .
2 . 3 . . . 5 . .
. 1 4 5 . 7 . 9 .
5 . . . . . . 3 7
3 . . . . . . . .
. . 7 6 . 5 . . .
1 . . 4 . 8 . 5 9
. 8 . . 1 . . 4 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
751924683846153972293786514614537298529861437378249165437695821162478359985312746 #1 Easy (298)
Hidden Single: r4c5=3
Hidden Single: r6c2=7
Hidden Single: r2c5=5
Hidden Single: r1c3=1
Hidden Single: r6c9=5
Hidden Single: r9c3=5
Hidden Single: r6c8=6
Hidden Single: r9c9=6
Naked Single: r9c1=9
Naked Single: r1c1=7
Naked Single: r7c1=4
Hidden Single: r4c1=6
Full House: r2c1=8
Naked Single: r2c3=6
Naked Single: r2c2=4
Full House: r3c2=9
Naked Single: r8c3=2
Naked Single: r3c6=6
Naked Single: r5c2=2
Naked Single: r7c2=3
Full House: r8c2=6
Naked Single: r8c5=7
Full House: r8c7=3
Naked Single: r3c5=8
Naked Single: r3c4=7
Naked Single: r3c8=1
Full House: r3c9=4
Naked Single: r7c8=2
Full House: r2c8=7
Naked Single: r7c5=9
Naked Single: r9c7=7
Naked Single: r1c5=2
Naked Single: r1c9=3
Full House: r1c4=9
Full House: r2c6=3
Full House: r2c9=2
Naked Single: r6c5=4
Full House: r5c5=6
Naked Single: r5c4=8
Naked Single: r9c6=2
Full House: r9c4=3
Full House: r6c4=2
Naked Single: r4c9=8
Full House: r4c7=2
Full House: r7c9=1
Full House: r7c7=8
Naked Single: r5c3=9
Full House: r6c3=8
Naked Single: r6c7=1
Full House: r5c7=4
Full House: r5c6=1
Full House: r6c6=9
|
easy
|
Basic 9x9 Sudoku 5241
|
normal_sudoku_2000
|
.3.6..285659.2.4172.8.4.6939..27.851.7....32.5.68..97.7....4.69...7...4.....8..32
|
437691285659328417218547693943276851871459326526813974782134569395762148164985732
|
normal_sudoku_2000
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 3 . 6 . . 2 8 5
6 5 9 . 2 . 4 1 7
2 . 8 . 4 . 6 9 3
9 . . 2 7 . 8 5 1
. 7 . . . . 3 2 .
5 . 6 8 . . 9 7 .
7 . . . . 4 . 6 9
. . . 7 . . . 4 .
. . . . 8 . . 3 2
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
437691285659328417218547693943276851871459326526813974782134569395762148164985732 #1 Easy (160)
Naked Single: r3c2=1
Naked Single: r4c2=4
Naked Single: r2c4=3
Full House: r2c6=8
Naked Single: r6c9=4
Full House: r5c9=6
Full House: r8c9=8
Naked Single: r1c1=4
Full House: r1c3=7
Naked Single: r3c4=5
Full House: r3c6=7
Naked Single: r4c3=3
Full House: r4c6=6
Naked Single: r5c3=1
Naked Single: r6c2=2
Full House: r5c1=8
Naked Single: r9c1=1
Full House: r8c1=3
Naked Single: r7c4=1
Naked Single: r7c2=8
Naked Single: r9c4=9
Full House: r5c4=4
Naked Single: r7c7=5
Naked Single: r9c2=6
Full House: r8c2=9
Naked Single: r9c6=5
Naked Single: r7c3=2
Full House: r7c5=3
Naked Single: r8c7=1
Full House: r9c7=7
Full House: r9c3=4
Full House: r8c3=5
Naked Single: r5c6=9
Full House: r5c5=5
Naked Single: r8c5=6
Full House: r8c6=2
Naked Single: r6c5=1
Full House: r1c5=9
Full House: r1c6=1
Full House: r6c6=3
|
easy
| null |
normal_sudoku_1041
|
.4.....8.7..5.8..2.32.4.....7...2...68...5..3...3.6.7.......75...389.1...1....9..
|
145269387796538412832741695379482561681975243524316879968123754453897126217654938
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 4 . . . . . 8 .
7 . . 5 . 8 . . 2
. 3 2 . 4 . . . .
. 7 . . . 2 . . .
6 8 . . . 5 . . 3
. . . 3 . 6 . 7 .
. . . . . . 7 5 .
. . 3 8 9 . 1 . .
. 1 . . . . 9 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
145269387796538412832741695379482561681975243524316879968123754453897126217654938 #1 Medium (540)
Hidden Single: r3c1=8
Hidden Single: r4c1=3
Hidden Single: r9c3=7
Hidden Single: r9c5=5
Hidden Single: r8c6=7
Hidden Single: r9c8=3
Naked Single: r9c6=4
Naked Single: r9c1=2
Naked Single: r9c4=6
Full House: r9c9=8
Hidden Single: r7c3=8
Hidden Single: r8c8=2
Hidden Single: r6c2=2
Hidden Single: r5c7=2
Hidden Single: r8c2=5
Naked Single: r8c1=4
Full House: r8c9=6
Full House: r7c9=4
Naked Single: r7c1=9
Full House: r7c2=6
Full House: r2c2=9
Locked Pair: 1,8 in r46c5 => r1257c5,r45c4<>1
Naked Single: r5c5=7
Locked Candidates Type 1 (Pointing): 5 in b1 => r1c79<>5
Locked Candidates Type 1 (Pointing): 9 in b5 => r13c4<>9
Locked Candidates Type 2 (Claiming): 6 in r3 => r12c7,r2c8<>6
Naked Single: r1c7=3
Naked Single: r2c7=4
Naked Single: r2c8=1
Naked Single: r2c3=6
Full House: r2c5=3
Naked Single: r7c5=2
Naked Single: r1c5=6
Naked Single: r7c4=1
Full House: r7c6=3
Naked Single: r3c4=7
Naked Single: r1c4=2
Hidden Single: r6c3=4
Hidden Single: r5c3=1
Naked Single: r1c3=5
Full House: r1c1=1
Full House: r6c1=5
Full House: r4c3=9
Naked Single: r1c6=9
Full House: r1c9=7
Full House: r3c6=1
Naked Single: r6c7=8
Naked Single: r4c4=4
Full House: r5c4=9
Full House: r5c8=4
Naked Single: r6c5=1
Full House: r4c5=8
Full House: r6c9=9
Naked Single: r4c8=6
Full House: r3c8=9
Naked Single: r3c9=5
Full House: r3c7=6
Full House: r4c7=5
Full House: r4c9=1
|
medium
|
Basic 9x9 Sudoku 1041
|
normal_sudoku_1211
|
.81.9.36736....14.2.4613...753.4.9..612389475.4.7.....1.6..........356.1.3......4
|
581294367369578142274613859753142986612389475948756213196427538427835691835961724
|
normal_sudoku_1211
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 8 1 . 9 . 3 6 7
3 6 . . . . 1 4 .
2 . 4 6 1 3 . . .
7 5 3 . 4 . 9 . .
6 1 2 3 8 9 4 7 5
. 4 . 7 . . . . .
1 . 6 . . . . . .
. . . . 3 5 6 . 1
. 3 . . . . . . 4
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
581294367369578142274613859753142986612389475948756213196427538427835691835961724 #1 Easy (198)
Naked Single: r1c1=5
Hidden Single: r2c9=2
Hidden Single: r3c2=7
Full House: r2c3=9
Naked Single: r6c3=8
Full House: r6c1=9
Naked Single: r6c7=2
Naked Single: r8c3=7
Full House: r9c3=5
Naked Single: r9c1=8
Full House: r8c1=4
Naked Single: r9c7=7
Hidden Single: r6c5=5
Naked Single: r2c5=7
Naked Single: r2c6=8
Full House: r2c4=5
Naked Single: r7c5=2
Full House: r9c5=6
Naked Single: r7c2=9
Full House: r8c2=2
Naked Single: r9c6=1
Naked Single: r6c6=6
Naked Single: r9c4=9
Full House: r9c8=2
Naked Single: r4c6=2
Full House: r4c4=1
Naked Single: r6c9=3
Full House: r6c8=1
Naked Single: r8c4=8
Full House: r8c8=9
Naked Single: r1c6=4
Full House: r1c4=2
Full House: r7c4=4
Full House: r7c6=7
Naked Single: r4c8=8
Full House: r4c9=6
Naked Single: r7c9=8
Full House: r3c9=9
Naked Single: r3c8=5
Full House: r3c7=8
Full House: r7c7=5
Full House: r7c8=3
|
easy
| null |
normal_sudoku_3842
|
.581..4..24..5...961..4....126735894.7.8.6.53.85..47...91..25.8.6.....21.3...1647
|
958173462243658179617249385126735894479816253385924716791462538564387921832591647
|
normal_sudoku_3842
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 5 8 1 . . 4 . .
2 4 . . 5 . . . 9
6 1 . . 4 . . . .
1 2 6 7 3 5 8 9 4
. 7 . 8 . 6 . 5 3
. 8 5 . . 4 7 . .
. 9 1 . . 2 5 . 8
. 6 . . . . . 2 1
. 3 . . . 1 6 4 7
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
958173462243658179617249385126735894479816253385924716791462538564387921832591647 #1 Easy (206)
Naked Single: r7c8=3
Full House: r8c7=9
Naked Single: r9c3=2
Hidden Single: r6c1=3
Hidden Single: r3c9=5
Hidden Single: r1c6=3
Naked Single: r2c4=6
Naked Single: r7c4=4
Naked Single: r7c1=7
Full House: r7c5=6
Naked Single: r1c1=9
Naked Single: r8c3=4
Naked Single: r5c1=4
Full House: r5c3=9
Hidden Single: r8c4=3
Hidden Single: r3c6=9
Naked Single: r3c4=2
Naked Single: r1c5=7
Full House: r2c6=8
Full House: r8c6=7
Naked Single: r3c7=3
Naked Single: r6c4=9
Full House: r9c4=5
Naked Single: r1c8=6
Full House: r1c9=2
Full House: r6c9=6
Naked Single: r8c5=8
Full House: r8c1=5
Full House: r9c1=8
Full House: r9c5=9
Naked Single: r2c7=1
Full House: r5c7=2
Full House: r6c8=1
Full House: r5c5=1
Full House: r6c5=2
Naked Single: r3c3=7
Full House: r2c3=3
Full House: r2c8=7
Full House: r3c8=8
|
easy
| null |
normal_sudoku_1922
|
.58..6....3.....98.1.9....7174......329581764865473129.....52.3.41.9..86..3.4...1
|
958736412732154698416928357174269835329581764865473129697815243241397586583642971
|
normal_sudoku_1922
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 5 8 . . 6 . . .
. 3 . . . . . 9 8
. 1 . 9 . . . . 7
1 7 4 . . . . . .
3 2 9 5 8 1 7 6 4
8 6 5 4 7 3 1 2 9
. . . . . 5 2 . 3
. 4 1 . 9 . . 8 6
. . 3 . 4 . . . 1
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
958736412732154698416928357174269835329581764865473129697815243241397586583642971 #1 Easy (160)
Naked Single: r4c9=5
Full House: r1c9=2
Naked Single: r8c7=5
Naked Single: r4c8=3
Full House: r4c7=8
Naked Single: r9c7=9
Naked Single: r9c8=7
Full House: r7c8=4
Naked Single: r9c2=8
Full House: r7c2=9
Naked Single: r1c8=1
Full House: r3c8=5
Naked Single: r9c6=2
Naked Single: r1c5=3
Naked Single: r4c6=9
Naked Single: r8c6=7
Naked Single: r9c4=6
Full House: r9c1=5
Naked Single: r1c4=7
Naked Single: r1c7=4
Full House: r1c1=9
Naked Single: r3c5=2
Naked Single: r2c6=4
Full House: r3c6=8
Naked Single: r8c1=2
Full House: r8c4=3
Naked Single: r4c4=2
Full House: r4c5=6
Naked Single: r7c5=1
Full House: r2c5=5
Full House: r2c4=1
Full House: r7c4=8
Naked Single: r2c7=6
Full House: r3c7=3
Naked Single: r3c3=6
Full House: r3c1=4
Naked Single: r2c1=7
Full House: r2c3=2
Full House: r7c3=7
Full House: r7c1=6
|
easy
| null |
normal_sudoku_5088
|
....8..574....59.8...3.9..2...964275574218369..65..184.4....721..8..1.9391....8.6
|
639182457421675938857349612183964275574218369296537184345896721768421593912753846
|
normal_sudoku_5088
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . 8 . . 5 7
4 . . . . 5 9 . 8
. . . 3 . 9 . . 2
. . . 9 6 4 2 7 5
5 7 4 2 1 8 3 6 9
. . 6 5 . . 1 8 4
. 4 . . . . 7 2 1
. . 8 . . 1 . 9 3
9 1 . . . . 8 . 6
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
639182457421675938857349612183964275574218369296537184345896721768421593912753846 #1 Easy (206)
Naked Single: r9c8=4
Full House: r8c7=5
Naked Single: r3c8=1
Full House: r2c8=3
Naked Single: r9c4=7
Hidden Single: r7c4=8
Hidden Single: r6c2=9
Hidden Single: r7c5=9
Hidden Single: r1c3=9
Hidden Single: r3c2=5
Naked Single: r3c3=7
Naked Single: r3c5=4
Naked Single: r3c7=6
Full House: r1c7=4
Full House: r3c1=8
Naked Single: r8c5=2
Naked Single: r2c5=7
Naked Single: r8c2=6
Naked Single: r9c6=3
Naked Single: r6c5=3
Full House: r6c6=7
Full House: r9c5=5
Full House: r6c1=2
Full House: r9c3=2
Naked Single: r2c2=2
Naked Single: r7c1=3
Naked Single: r8c1=7
Full House: r8c4=4
Full House: r7c6=6
Full House: r7c3=5
Full House: r1c6=2
Naked Single: r2c3=1
Full House: r2c4=6
Full House: r4c3=3
Full House: r1c4=1
Naked Single: r1c2=3
Full House: r1c1=6
Full House: r4c1=1
Full House: r4c2=8
|
easy
| null |
normal_sudoku_2825
|
2...3..9...1....6.4....6.826571..843.4.3752161...6.759.1.6..574...4..931..4...628
|
286531497791248365435796182657129843948375216123864759319682574862457931574913628
|
normal_sudoku_2825
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
2 . . . 3 . . 9 .
. . 1 . . . . 6 .
4 . . . . 6 . 8 2
6 5 7 1 . . 8 4 3
. 4 . 3 7 5 2 1 6
1 . . . 6 . 7 5 9
. 1 . 6 . . 5 7 4
. . . 4 . . 9 3 1
. . 4 . . . 6 2 8
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
286531497791248365435796182657129843948375216123864759319682574862457931574913628 #1 Medium (500)
Hidden Single: r6c6=4
Hidden Single: r2c5=4
Naked Single: r2c7=3
Naked Single: r3c7=1
Full House: r1c7=4
Hidden Single: r6c4=8
Hidden Single: r1c6=1
Hidden Single: r9c5=1
Hidden Single: r2c4=2
Hidden Single: r2c6=8
Locked Candidates Type 1 (Pointing): 7 in b2 => r9c4<>7
Locked Candidates Type 1 (Pointing): 9 in b2 => r3c23<>9
Locked Candidates Type 2 (Claiming): 3 in c1 => r7c3,r9c2<>3
Naked Pair: 5,7 in r1c49 => r1c2<>7, r1c3<>5
Naked Pair: 7,9 in r29c2 => r38c2<>7
Naked Single: r3c2=3
Naked Single: r3c3=5
Naked Single: r6c2=2
Full House: r6c3=3
Naked Single: r3c5=9
Full House: r3c4=7
Full House: r1c4=5
Full House: r9c4=9
Naked Single: r4c5=2
Full House: r4c6=9
Naked Single: r1c9=7
Full House: r2c9=5
Naked Single: r9c2=7
Naked Single: r7c5=8
Full House: r8c5=5
Naked Single: r2c2=9
Full House: r2c1=7
Naked Single: r9c6=3
Full House: r9c1=5
Naked Single: r8c1=8
Naked Single: r7c6=2
Full House: r8c6=7
Naked Single: r5c1=9
Full House: r5c3=8
Full House: r7c1=3
Full House: r7c3=9
Naked Single: r8c2=6
Full House: r1c2=8
Full House: r1c3=6
Full House: r8c3=2
|
medium
| null |
normal_sudoku_450
|
6.3.4571....7...6...2.3..84.2....65...8.2..7.7..5.8.43.1925783.387469125.....149.
|
693845712845712369172936584924173658538624971761598243419257836387469125256381497
|
normal_sudoku_450
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
6 . 3 . 4 5 7 1 .
. . . 7 . . . 6 .
. . 2 . 3 . . 8 4
. 2 . . . . 6 5 .
. . 8 . 2 . . 7 .
7 . . 5 . 8 . 4 3
. 1 9 2 5 7 8 3 .
3 8 7 4 6 9 1 2 5
. . . . . 1 4 9 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
693845712845712369172936584924173658538624971761598243419257836387469125256381497 #1 Easy (156)
Naked Single: r7c9=6
Full House: r7c1=4
Full House: r9c9=7
Naked Single: r1c2=9
Naked Single: r5c7=9
Naked Single: r2c6=2
Naked Single: r3c6=6
Naked Single: r9c5=8
Full House: r9c4=3
Naked Single: r1c4=8
Full House: r1c9=2
Naked Single: r6c2=6
Naked Single: r3c7=5
Naked Single: r5c9=1
Naked Single: r6c7=2
Full House: r2c7=3
Full House: r2c9=9
Full House: r4c9=8
Naked Single: r6c3=1
Full House: r6c5=9
Naked Single: r9c2=5
Naked Single: r3c1=1
Naked Single: r3c2=7
Full House: r3c4=9
Full House: r2c5=1
Full House: r4c5=7
Naked Single: r5c1=5
Naked Single: r5c4=6
Full House: r4c4=1
Naked Single: r4c1=9
Naked Single: r4c3=4
Full House: r4c6=3
Full House: r5c2=3
Full House: r2c2=4
Full House: r5c6=4
Naked Single: r9c1=2
Full House: r9c3=6
Full House: r2c1=8
Full House: r2c3=5
|
easy
| null |
normal_sudoku_1805
|
3..481..6....7..9...25..1.....7.83...9..64...4......6.2..8.9..1.1..538....8..7.3.
|
359481726186372495742596183625718349893264517471935268237849651914653872568127934
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
3 . . 4 8 1 . . 6
. . . . 7 . . 9 .
. . 2 5 . . 1 . .
. . . 7 . 8 3 . .
. 9 . . 6 4 . . .
4 . . . . . . 6 .
2 . . 8 . 9 . . 1
. 1 . . 5 3 8 . .
. . 8 . . 7 . 3 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
359481726186372495742596183625718349893264517471935268237849651914653872568127934 #1 Easy (418)
Naked Single: r3c6=6
Naked Single: r7c5=4
Naked Single: r2c6=2
Full House: r6c6=5
Naked Single: r2c4=3
Full House: r3c5=9
Hidden Single: r1c3=9
Hidden Single: r6c4=9
Hidden Single: r3c9=3
Hidden Single: r6c5=3
Hidden Single: r5c3=3
Hidden Single: r4c9=9
Hidden Single: r9c7=9
Hidden Single: r7c2=3
Hidden Single: r6c3=1
Hidden Single: r8c1=9
Hidden Single: r4c8=4
Hidden Single: r2c7=4
Hidden Single: r7c7=6
Hidden Single: r2c1=1
Hidden Single: r3c2=4
Hidden Single: r4c5=1
Full House: r5c4=2
Full House: r9c5=2
Naked Single: r8c4=6
Full House: r9c4=1
Hidden Single: r5c8=1
Hidden Single: r8c3=4
Hidden Single: r9c9=4
Hidden Single: r4c2=2
Hidden Single: r3c8=8
Full House: r3c1=7
Naked Single: r2c9=5
Naked Single: r1c2=5
Naked Single: r2c3=6
Full House: r2c2=8
Naked Single: r9c2=6
Full House: r6c2=7
Full House: r9c1=5
Full House: r7c3=7
Full House: r4c3=5
Full House: r4c1=6
Full House: r5c1=8
Full House: r7c8=5
Naked Single: r6c7=2
Full House: r6c9=8
Naked Single: r5c9=7
Full House: r5c7=5
Full House: r1c7=7
Full House: r8c9=2
Full House: r1c8=2
Full House: r8c8=7
|
easy
|
Basic 9x9 Sudoku 1805
|
normal_sudoku_4015
|
7..1...65.6..4.7..2....6.43...2..8.49..31.652.52.643.74....1....31.8247...94.....
|
784123965163549728295876143316257894947318652852964317428791536531682479679435281
|
normal_sudoku_4015
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
7 . . 1 . . . 6 5
. 6 . . 4 . 7 . .
2 . . . . 6 . 4 3
. . . 2 . . 8 . 4
9 . . 3 1 . 6 5 2
. 5 2 . 6 4 3 . 7
4 . . . . 1 . . .
. 3 1 . 8 2 4 7 .
. . 9 4 . . . . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
784123965163549728295876143316257894947318652852964317428791536531682479679435281 #1 Easy (220)
Hidden Single: r2c8=2
Naked Single: r1c7=9
Naked Single: r3c7=1
Full House: r2c9=8
Hidden Single: r1c5=2
Hidden Single: r3c2=9
Hidden Single: r2c1=1
Naked Single: r6c1=8
Naked Single: r6c4=9
Full House: r6c8=1
Full House: r4c8=9
Naked Single: r2c4=5
Naked Single: r2c3=3
Full House: r2c6=9
Naked Single: r3c5=7
Naked Single: r8c4=6
Naked Single: r3c4=8
Full House: r7c4=7
Full House: r1c6=3
Full House: r3c3=5
Naked Single: r4c5=5
Naked Single: r8c1=5
Full House: r8c9=9
Naked Single: r9c6=5
Naked Single: r4c6=7
Full House: r5c6=8
Naked Single: r9c5=3
Full House: r7c5=9
Naked Single: r9c1=6
Full House: r4c1=3
Naked Single: r7c9=6
Full House: r9c9=1
Naked Single: r9c7=2
Full House: r7c7=5
Naked Single: r4c2=1
Full House: r4c3=6
Naked Single: r9c8=8
Full House: r7c8=3
Full House: r9c2=7
Naked Single: r7c3=8
Full House: r7c2=2
Naked Single: r5c2=4
Full House: r1c2=8
Full House: r1c3=4
Full House: r5c3=7
|
easy
| null |
normal_sudoku_2900
|
.........1..9..48...37.592..9...25.......3...36......17....8..3..5......9...6..4.
|
659824317127936485483715926891672534574183269362459871746298153215347698938561742
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . . . . . .
1 . . 9 . . 4 8 .
. . 3 7 . 5 9 2 .
. 9 . . . 2 5 . .
. . . . . 3 . . .
3 6 . . . . . . 1
7 . . . . 8 . . 3
. . 5 . . . . . .
9 . . . 6 . . 4 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
659824317127936485483715926891672534574183269362459871746298153215347698938561742 #1 Easy (442)
Naked Single: r2c6=6
Naked Single: r3c9=6
Hidden Single: r3c5=1
Naked Single: r1c6=4
Hidden Single: r2c5=3
Hidden Single: r4c8=3
Hidden Single: r1c7=3
Hidden Single: r1c3=9
Hidden Single: r4c4=6
Hidden Single: r1c8=1
Hidden Single: r1c1=6
Hidden Single: r7c3=6
Hidden Single: r4c3=1
Hidden Single: r5c4=1
Hidden Single: r7c8=5
Hidden Single: r5c1=5
Hidden Single: r9c4=5
Hidden Single: r7c5=9
Hidden Single: r6c5=5
Hidden Single: r8c1=2
Naked Single: r9c3=8
Hidden Single: r9c2=3
Hidden Single: r8c4=3
Hidden Single: r6c6=9
Naked Single: r6c8=7
Hidden Single: r1c5=2
Full House: r1c4=8
Naked Single: r6c4=4
Full House: r7c4=2
Naked Single: r6c3=2
Full House: r6c7=8
Naked Single: r7c7=1
Full House: r7c2=4
Full House: r8c2=1
Naked Single: r2c3=7
Full House: r5c3=4
Naked Single: r4c9=4
Naked Single: r3c2=8
Full House: r3c1=4
Full House: r4c1=8
Full House: r5c2=7
Full House: r4c5=7
Full House: r5c5=8
Full House: r8c5=4
Naked Single: r8c6=7
Full House: r9c6=1
Naked Single: r1c2=5
Full House: r1c9=7
Full House: r2c9=5
Full House: r2c2=2
Naked Single: r8c7=6
Naked Single: r9c9=2
Full House: r9c7=7
Full House: r5c7=2
Naked Single: r8c8=9
Full House: r5c8=6
Full House: r5c9=9
Full House: r8c9=8
|
easy
|
Basic 9x9 Sudoku 2900
|
normal_sudoku_2188
|
4...3859.9.....32.563...8148..45.1737....12..1..7..6.96..24593.351...4822.....76.
|
472138596918564327563927814829456173746391258135782649687245931351679482294813765
|
normal_sudoku_2188
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 . . . 3 8 5 9 .
9 . . . . . 3 2 .
5 6 3 . . . 8 1 4
8 . . 4 5 . 1 7 3
7 . . . . 1 2 . .
1 . . 7 . . 6 . 9
6 . . 2 4 5 9 3 .
3 5 1 . . . 4 8 2
2 . . . . . 7 6 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
472138596918564327563927814829456173746391258135782649687245931351679482294813765 #1 Easy (156)
Naked Single: r3c4=9
Naked Single: r7c9=1
Full House: r9c9=5
Naked Single: r8c4=6
Naked Single: r5c9=8
Naked Single: r1c4=1
Naked Single: r5c4=3
Naked Single: r2c4=5
Full House: r9c4=8
Naked Single: r6c6=2
Naked Single: r3c6=7
Full House: r3c5=2
Naked Single: r6c5=8
Naked Single: r2c5=6
Full House: r2c6=4
Naked Single: r8c6=9
Full House: r8c5=7
Naked Single: r2c9=7
Full House: r1c9=6
Naked Single: r5c5=9
Full House: r4c6=6
Full House: r9c5=1
Full House: r9c6=3
Naked Single: r2c3=8
Full House: r2c2=1
Naked Single: r5c2=4
Naked Single: r7c3=7
Full House: r7c2=8
Naked Single: r5c8=5
Full House: r5c3=6
Full House: r6c8=4
Naked Single: r6c2=3
Full House: r6c3=5
Naked Single: r9c2=9
Full House: r9c3=4
Naked Single: r1c3=2
Full House: r1c2=7
Full House: r4c2=2
Full House: r4c3=9
|
easy
| null |
normal_sudoku_3899
|
..3..268.4.6...5...28..6..38..6...7..6547.....3...1456.8136...969.12...53....9.6.
|
953712684476938521128546793814695372265473918739281456581367249697124835342859167
|
normal_sudoku_3899
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 3 . . 2 6 8 .
4 . 6 . . . 5 . .
. 2 8 . . 6 . . 3
8 . . 6 . . . 7 .
. 6 5 4 7 . . . .
. 3 . . . 1 4 5 6
. 8 1 3 6 . . . 9
6 9 . 1 2 . . . 5
3 . . . . 9 . 6 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
953712684476938521128546793814695372265473918739281456581367249697124835342859167 #1 Easy (270)
Hidden Single: r6c4=2
Hidden Single: r6c5=8
Naked Single: r5c6=3
Naked Single: r4c6=5
Full House: r4c5=9
Hidden Single: r2c5=3
Hidden Single: r4c7=3
Hidden Single: r8c8=3
Hidden Single: r7c1=5
Hidden Single: r6c3=9
Full House: r6c1=7
Hidden Single: r1c2=5
Hidden Single: r5c1=2
Naked Single: r4c3=4
Full House: r4c2=1
Full House: r4c9=2
Naked Single: r8c3=7
Full House: r9c3=2
Full House: r9c2=4
Full House: r2c2=7
Naked Single: r8c7=8
Full House: r8c6=4
Naked Single: r9c5=5
Naked Single: r2c6=8
Full House: r7c6=7
Full House: r9c4=8
Naked Single: r2c9=1
Naked Single: r2c4=9
Full House: r2c8=2
Naked Single: r7c7=2
Full House: r7c8=4
Naked Single: r5c9=8
Naked Single: r9c9=7
Full House: r1c9=4
Full House: r9c7=1
Naked Single: r1c4=7
Full House: r3c4=5
Naked Single: r3c8=9
Full House: r3c7=7
Full House: r5c7=9
Full House: r5c8=1
Naked Single: r1c5=1
Full House: r1c1=9
Full House: r3c1=1
Full House: r3c5=4
|
easy
| null |
normal_sudoku_2937
|
42..8....8.1....476....42..98..4.7...539....617.8.5.2..1.3....4369...5..74...6..2
|
427689153891532647635714298986243715253971486174865329512397864369428571748156932
|
normal_sudoku_2937
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 2 . . 8 . . . .
8 . 1 . . . . 4 7
6 . . . . 4 2 . .
9 8 . . 4 . 7 . .
. 5 3 9 . . . . 6
1 7 . 8 . 5 . 2 .
. 1 . 3 . . . . 4
3 6 9 . . . 5 . .
7 4 . . . 6 . . 2
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
427689153891532647635714298986243715253971486174865329512397864369428571748156932 #1 Easy (298)
Naked Single: r5c1=2
Full House: r7c1=5
Naked Single: r4c3=6
Full House: r6c3=4
Naked Single: r9c3=8
Full House: r7c3=2
Hidden Single: r5c7=4
Hidden Single: r8c4=4
Hidden Single: r6c5=6
Hidden Single: r5c8=8
Hidden Single: r7c7=8
Naked Single: r8c9=1
Naked Single: r8c8=7
Naked Single: r8c5=2
Full House: r8c6=8
Hidden Single: r4c6=3
Naked Single: r4c9=5
Naked Single: r4c8=1
Full House: r4c4=2
Hidden Single: r3c9=8
Hidden Single: r7c8=6
Hidden Single: r1c7=1
Hidden Single: r2c6=2
Hidden Single: r5c6=1
Full House: r5c5=7
Naked Single: r7c5=9
Full House: r7c6=7
Full House: r1c6=9
Naked Single: r1c9=3
Full House: r6c9=9
Full House: r6c7=3
Naked Single: r1c8=5
Naked Single: r9c7=9
Full House: r2c7=6
Full House: r3c8=9
Full House: r9c8=3
Naked Single: r1c3=7
Full House: r1c4=6
Full House: r3c3=5
Naked Single: r2c4=5
Naked Single: r3c2=3
Full House: r2c2=9
Full House: r2c5=3
Naked Single: r9c4=1
Full House: r3c4=7
Full House: r3c5=1
Full House: r9c5=5
|
easy
| null |
normal_sudoku_3466
|
.....79.6.86..4...57..6..2.2...1..734..3..2..1...7.56..257...1.....5..9.7....16..
|
312587946986124735574963128259618473467395281138472569625739814841256397793841652
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . . 7 9 . 6
. 8 6 . . 4 . . .
5 7 . . 6 . . 2 .
2 . . . 1 . . 7 3
4 . . 3 . . 2 . .
1 . . . 7 . 5 6 .
. 2 5 7 . . . 1 .
. . . . 5 . . 9 .
7 . . . . 1 6 . .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
312587946986124735574963128259618473467395281138472569625739814841256397793841652 #1 Easy (274)
Naked Single: r1c1=3
Naked Single: r5c8=8
Naked Single: r2c1=9
Naked Single: r4c7=4
Naked Single: r5c5=9
Naked Single: r6c9=9
Full House: r5c9=1
Naked Single: r5c3=7
Naked Single: r6c2=3
Naked Single: r6c3=8
Naked Single: r4c3=9
Naked Single: r6c6=2
Full House: r6c4=4
Hidden Single: r1c3=2
Naked Single: r1c5=8
Hidden Single: r7c6=9
Naked Single: r3c6=3
Naked Single: r2c5=2
Hidden Single: r9c2=9
Hidden Single: r3c4=9
Hidden Single: r7c1=6
Full House: r8c1=8
Naked Single: r8c6=6
Naked Single: r5c6=5
Full House: r4c6=8
Full House: r5c2=6
Full House: r4c4=6
Full House: r4c2=5
Naked Single: r8c4=2
Naked Single: r9c4=8
Hidden Single: r9c9=2
Hidden Single: r9c8=5
Naked Single: r1c8=4
Full House: r2c8=3
Naked Single: r1c2=1
Full House: r1c4=5
Full House: r3c3=4
Full House: r8c2=4
Full House: r2c4=1
Naked Single: r3c9=8
Full House: r3c7=1
Naked Single: r9c3=3
Full House: r8c3=1
Full House: r9c5=4
Full House: r7c5=3
Naked Single: r8c9=7
Full House: r8c7=3
Naked Single: r2c7=7
Full House: r7c7=8
Full House: r7c9=4
Full House: r2c9=5
|
easy
|
Basic 9x9 Sudoku 3466
|
normal_sudoku_746
|
.943...1......4.38....19.4..6......2.15.4..9......356.7.15......39..1.5.........4
|
694385217157624938328719645963157482815246793472893561741568329239471856586932174
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 9 4 3 . . . 1 .
. . . . . 4 . 3 8
. . . . 1 9 . 4 .
. 6 . . . . . . 2
. 1 5 . 4 . . 9 .
. . . . . 3 5 6 .
7 . 1 5 . . . . .
. 3 9 . . 1 . 5 .
. . . . . . . . 4
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
694385217157624938328719645963157482815246793472893561741568329239471856586932174 #1 Medium (776)
Hidden Single: r2c7=9
Hidden Single: r2c1=1
Hidden Single: r4c7=4
Hidden Single: r7c2=4
Hidden Single: r8c4=4
Hidden Single: r9c7=1
Hidden Single: r6c9=1
Hidden Single: r7c9=9
Hidden Single: r4c4=1
Hidden Single: r6c1=4
Hidden Single: r9c5=3
Hidden Single: r5c9=3
Hidden Single: r7c7=3
Hidden Single: r4c1=9
Hidden Single: r9c4=9
Hidden Single: r6c5=9
Hidden Single: r4c3=3
Hidden Single: r3c1=3
Locked Candidates Type 1 (Pointing): 2 in b3 => r8c7<>2
Locked Candidates Type 1 (Pointing): 7 in b4 => r6c4<>7
Locked Candidates Type 1 (Pointing): 6 in b9 => r8c15<>6
Locked Candidates Type 1 (Pointing): 6 in b7 => r9c6<>6
Naked Pair: 2,8 in r58c1 => r19c1<>2, r19c1<>8
Locked Candidates Type 1 (Pointing): 8 in b1 => r3c4<>8
Locked Candidates Type 2 (Claiming): 8 in c4 => r4c56,r5c6<>8
Hidden Single: r4c8=8
Full House: r5c7=7
Naked Single: r7c8=2
Full House: r9c8=7
Naked Single: r8c9=6
Full House: r8c7=8
Naked Single: r8c1=2
Full House: r8c5=7
Naked Single: r5c1=8
Naked Single: r4c5=5
Full House: r4c6=7
Hidden Single: r9c6=2
Naked Single: r5c6=6
Full House: r5c4=2
Full House: r6c4=8
Naked Single: r7c6=8
Full House: r1c6=5
Full House: r7c5=6
Naked Single: r1c1=6
Full House: r9c1=5
Naked Single: r1c9=7
Full House: r3c9=5
Naked Single: r2c5=2
Full House: r1c5=8
Full House: r1c7=2
Full House: r3c7=6
Naked Single: r9c2=8
Full House: r9c3=6
Naked Single: r2c3=7
Naked Single: r3c4=7
Full House: r2c4=6
Full House: r2c2=5
Naked Single: r3c2=2
Full House: r3c3=8
Full House: r6c3=2
Full House: r6c2=7
|
medium
|
Basic 9x9 Sudoku 746
|
normal_sudoku_436
|
...6.9..1.19.2367.....1.3..26.5.....958364712.7.29.5.6.9..3.257735..2.6.82.....43
|
387659421519423678642718395261587934958364712473291586194836257735142869826975143
|
normal_sudoku_436
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . 6 . 9 . . 1
. 1 9 . 2 3 6 7 .
. . . . 1 . 3 . .
2 6 . 5 . . . . .
9 5 8 3 6 4 7 1 2
. 7 . 2 9 . 5 . 6
. 9 . . 3 . 2 5 7
7 3 5 . . 2 . 6 .
8 2 . . . . . 4 3
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
387659421519423678642718395261587934958364712473291586194836257735142869826975143 #1 Medium (416)
Locked Candidates Type 1 (Pointing): 1 in b5 => r79c6<>1
Locked Candidates Type 1 (Pointing): 4 in b6 => r4c3<>4
Locked Candidates Type 1 (Pointing): 4 in b7 => r7c4<>4
Locked Candidates Type 1 (Pointing): 8 in b9 => r8c45<>8
Naked Single: r8c5=4
Locked Candidates Type 2 (Claiming): 4 in c2 => r1c13,r23c1,r3c3<>4
Naked Single: r2c1=5
Naked Single: r1c1=3
Naked Single: r3c1=6
Hidden Single: r1c5=5
Naked Single: r9c5=7
Full House: r4c5=8
Naked Single: r6c6=1
Full House: r4c6=7
Naked Single: r6c1=4
Full House: r7c1=1
Naked Single: r3c6=8
Naked Single: r6c3=3
Full House: r4c3=1
Full House: r6c8=8
Naked Single: r7c4=8
Naked Single: r9c3=6
Full House: r7c3=4
Full House: r7c6=6
Full House: r9c6=5
Naked Single: r2c4=4
Full House: r2c9=8
Full House: r3c4=7
Naked Single: r3c2=4
Full House: r1c2=8
Naked Single: r1c8=2
Naked Single: r1c7=4
Full House: r1c3=7
Full House: r3c3=2
Naked Single: r8c9=9
Naked Single: r3c8=9
Full House: r3c9=5
Full House: r4c9=4
Full House: r4c8=3
Full House: r4c7=9
Naked Single: r8c4=1
Full House: r8c7=8
Full House: r9c7=1
Full House: r9c4=9
|
medium
| null |
normal_sudoku_5468
|
4137869528....9.34.9.4..6..9........5.8..4.93.3.95..2.2.419...8..9.4.2...8...2.49
|
413786952826519734795423681942371865578264193631958427264195378359847216187632549
|
normal_sudoku_5468
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
4 1 3 7 8 6 9 5 2
8 . . . . 9 . 3 4
. 9 . 4 . . 6 . .
9 . . . . . . . .
5 . 8 . . 4 . 9 3
. 3 . 9 5 . . 2 .
2 . 4 1 9 . . . 8
. . 9 . 4 . 2 . .
. 8 . . . 2 . 4 9
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
413786952826519734795423681942371865578264193631958427264195378359847216187632549 #1 Medium (332)
Naked Single: r3c1=7
Naked Single: r3c9=1
Naked Single: r2c7=7
Full House: r3c8=8
Naked Single: r5c7=1
Hidden Single: r6c7=4
Hidden Single: r4c2=4
Hidden Single: r2c5=1
Hidden Single: r8c8=1
Hidden Single: r6c6=8
Hidden Single: r4c7=8
Hidden Single: r8c4=8
Hidden Single: r4c6=1
Hidden Single: r4c9=5
Locked Candidates Type 1 (Pointing): 7 in b5 => r9c5<>7
Hidden Single: r9c3=7
Hidden Single: r6c9=7
Full House: r4c8=6
Full House: r8c9=6
Full House: r7c8=7
Naked Single: r4c3=2
Naked Single: r8c1=3
Naked Single: r8c2=5
Full House: r8c6=7
Naked Single: r3c3=5
Naked Single: r4c4=3
Full House: r4c5=7
Naked Single: r7c2=6
Full House: r9c1=1
Full House: r6c1=6
Full House: r6c3=1
Full House: r2c3=6
Full House: r2c2=2
Full House: r5c2=7
Full House: r2c4=5
Naked Single: r3c6=3
Full House: r3c5=2
Full House: r7c6=5
Full House: r7c7=3
Full House: r9c7=5
Naked Single: r9c4=6
Full House: r5c4=2
Full House: r5c5=6
Full House: r9c5=3
|
medium
| null |
normal_sudoku_777
|
.1...4..3.538....74...736..3....5..6.9..3..2.2687..3...2....9..6...5...1.....74.2
|
716924583953861247482573619374285196591436728268719354127648935649352871835197462
|
puzzles4_forum_hardest_1905
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. 1 . . . 4 . . 3
. 5 3 8 . . . . 7
4 . . . 7 3 6 . .
3 . . . . 5 . . 6
. 9 . . 3 . . 2 .
2 6 8 7 . . 3 . .
. 2 . . . . 9 . .
6 . . . 5 . . . 1
. . . . . 7 4 . 2
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
716924583953861247482573619374285196591436728268719354127648935649352871835197462 #1 Medium (304)
Naked Single: r3c2=8
Naked Single: r2c1=9
Naked Single: r9c2=3
Naked Single: r1c1=7
Naked Single: r3c3=2
Full House: r1c3=6
Hidden Single: r2c8=4
Locked Candidates Type 1 (Pointing): 5 in b4 => r5c79<>5
Hidden Single: r1c7=5
Naked Single: r3c9=9
Naked Single: r1c8=8
Naked Single: r3c8=1
Full House: r2c7=2
Full House: r3c4=5
Hidden Single: r8c6=2
Hidden Single: r8c7=8
Naked Single: r7c9=5
Naked Single: r6c9=4
Full House: r5c9=8
Naked Single: r9c8=6
Hidden Single: r6c6=9
Naked Single: r6c5=1
Full House: r6c8=5
Naked Single: r2c5=6
Full House: r2c6=1
Naked Single: r5c6=6
Full House: r7c6=8
Naked Single: r5c4=4
Naked Single: r7c1=1
Naked Single: r7c5=4
Naked Single: r9c5=9
Naked Single: r4c4=2
Full House: r4c5=8
Full House: r1c5=2
Full House: r1c4=9
Naked Single: r5c1=5
Full House: r9c1=8
Naked Single: r7c3=7
Naked Single: r8c4=3
Naked Single: r9c3=5
Full House: r9c4=1
Full House: r7c4=6
Full House: r7c8=3
Full House: r8c8=7
Full House: r4c8=9
Naked Single: r5c3=1
Full House: r5c7=7
Full House: r4c7=1
Naked Single: r8c2=4
Full House: r4c2=7
Full House: r4c3=4
Full House: r8c3=9
|
medium
|
Basic 9x9 Sudoku 777
|
normal_sudoku_516
|
....3.....5.2..1.8..48...6.7....1.242....938..8...3........8.1.54......7....9..43
|
178936452659274138324815769793581624216749385485623971937458216541362897862197543
|
puzzles1_unbiased
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . . . 3 . . . .
. 5 . 2 . . 1 . 8
. . 4 8 . . . 6 .
7 . . . . 1 . 2 4
2 . . . . 9 3 8 .
. 8 . . . 3 . . .
. . . . . 8 . 1 .
5 4 . . . . . . 7
. . . . 9 . . 4 3
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_annotation
|
hard
|
178936452659274138324815769793581624216749385485623971937458216541362897862197543 #1 Easy (410)
Naked Single: r8c8=9
Hidden Single: r4c5=8
Hidden Single: r6c5=2
Hidden Single: r6c1=4
Hidden Single: r1c4=9
Hidden Single: r1c7=4
Hidden Single: r2c8=3
Hidden Single: r3c5=1
Naked Single: r8c5=6
Naked Single: r8c6=2
Naked Single: r8c7=8
Hidden Single: r2c6=4
Naked Single: r2c5=7
Naked Single: r3c6=5
Full House: r1c6=6
Full House: r9c6=7
Hidden Single: r5c4=7
Hidden Single: r5c5=4
Full House: r7c5=5
Naked Single: r9c4=1
Naked Single: r8c4=3
Full House: r7c4=4
Full House: r8c3=1
Hidden Single: r9c7=5
Hidden Single: r1c1=1
Hidden Single: r6c9=1
Hidden Single: r5c2=1
Hidden Single: r1c3=8
Hidden Single: r9c1=8
Hidden Single: r3c9=9
Naked Single: r3c1=3
Hidden Single: r7c3=7
Hidden Single: r9c3=2
Full House: r9c2=6
Naked Single: r7c1=9
Full House: r2c1=6
Full House: r7c2=3
Full House: r2c3=9
Naked Single: r4c2=9
Naked Single: r4c7=6
Naked Single: r4c4=5
Full House: r4c3=3
Full House: r6c4=6
Naked Single: r5c9=5
Full House: r5c3=6
Full House: r6c3=5
Naked Single: r7c7=2
Full House: r7c9=6
Full House: r1c9=2
Naked Single: r6c8=7
Full House: r1c8=5
Full House: r3c7=7
Full House: r1c2=7
Full House: r6c7=9
Full House: r3c2=2
|
easy
|
Basic 9x9 Sudoku 516
|
normal_sudoku_2512
|
7..1....33.89..12.149372856286.1....51...9..2...2...816...9......7..136.8..6.7.45
|
725168493368954127149372856286513974514789632973246581632495718457821369891637245
|
normal_sudoku_2512
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
7 . . 1 . . . . 3
3 . 8 9 . . 1 2 .
1 4 9 3 7 2 8 5 6
2 8 6 . 1 . . . .
5 1 . . . 9 . . 2
. . . 2 . . . 8 1
6 . . . 9 . . . .
. . 7 . . 1 3 6 .
8 . . 6 . 7 . 4 5
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
725168493368954127149372856286513974514789632973246581632495718457821369891637245 #1 Easy (198)
Naked Single: r1c8=9
Naked Single: r1c7=4
Full House: r2c9=7
Naked Single: r7c9=8
Naked Single: r8c9=9
Full House: r4c9=4
Naked Single: r8c1=4
Full House: r6c1=9
Naked Single: r9c7=2
Naked Single: r7c7=7
Full House: r7c8=1
Naked Single: r9c5=3
Naked Single: r5c7=6
Naked Single: r9c2=9
Full House: r9c3=1
Naked Single: r6c7=5
Full House: r4c7=9
Hidden Single: r6c2=7
Hidden Single: r1c6=8
Hidden Single: r8c5=2
Naked Single: r8c2=5
Full House: r8c4=8
Naked Single: r2c2=6
Naked Single: r1c2=2
Full House: r1c3=5
Full House: r7c2=3
Full House: r1c5=6
Full House: r7c3=2
Naked Single: r6c5=4
Naked Single: r2c5=5
Full House: r5c5=8
Full House: r2c6=4
Naked Single: r5c4=7
Naked Single: r6c3=3
Full House: r5c3=4
Full House: r5c8=3
Full House: r6c6=6
Full House: r4c8=7
Naked Single: r7c6=5
Full House: r4c6=3
Full House: r4c4=5
Full House: r7c4=4
|
easy
| null |
normal_sudoku_760
|
..3968.416..254...845173296..264...95..32......481.352.7.4.2.35......8.7...7...14
|
723968541691254783845173296382645179517329468964817352179482635436591827258736914
|
normal_sudoku_760
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
. . 3 9 6 8 . 4 1
6 . . 2 5 4 . . .
8 4 5 1 7 3 2 9 6
. . 2 6 4 . . . 9
5 . . 3 2 . . . .
. . 4 8 1 . 3 5 2
. 7 . 4 . 2 . 3 5
. . . . . . 8 . 7
. . . 7 . . . 1 4
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
723968541691254783845173296382645179517329468964817352179482635436591827258736914 #1 Easy (156)
Full House: r8c4=5
Naked Single: r1c2=2
Naked Single: r2c7=7
Naked Single: r5c9=8
Full House: r2c9=3
Naked Single: r1c1=7
Full House: r1c7=5
Full House: r2c8=8
Naked Single: r4c7=1
Naked Single: r4c8=7
Naked Single: r6c1=9
Naked Single: r4c1=3
Naked Single: r4c6=5
Full House: r4c2=8
Naked Single: r5c8=6
Full House: r5c7=4
Full House: r8c8=2
Naked Single: r6c2=6
Full House: r6c6=7
Full House: r5c6=9
Naked Single: r7c1=1
Naked Single: r9c1=2
Full House: r8c1=4
Naked Single: r5c2=1
Full House: r5c3=7
Naked Single: r9c6=6
Full House: r8c6=1
Naked Single: r2c2=9
Full House: r2c3=1
Naked Single: r9c7=9
Full House: r7c7=6
Naked Single: r8c2=3
Full House: r9c2=5
Naked Single: r9c3=8
Full House: r9c5=3
Naked Single: r8c5=9
Full House: r7c5=8
Full House: r7c3=9
Full House: r8c3=6
|
easy
| null |
normal_sudoku_62
|
1..897..3.38..1.7.7....6.8...1...5685.2.18.3.8.3.59214.....53..25.1....63.4.62.5.
|
145897623638521479729346185491273568562418937873659214916785342257134896384962751
|
normal_sudoku_62
|
Each row, column, and 3×3 subgrid must contain all digits from 1 to 9 exactly once. Digits cannot be repeated within any row, column, or 3×3 subgrid.
|
None
| 9
| 9
|
1 . . 8 9 7 . . 3
. 3 8 . . 1 . 7 .
7 . . . . 6 . 8 .
. . 1 . . . 5 6 8
5 . 2 . 1 8 . 3 .
8 . 3 . 5 9 2 1 4
. . . . . 5 3 . .
2 5 . 1 . . . . 6
3 . 4 . 6 2 . 5 .
|
Complete the sudoku board based on the rules and visual elements.
|
sudoku
|
sudoku_benchmark
|
hard
|
145897623638521479729346185491273568562418937873659214916785342257134896384962751 #1 Easy (178)
Hidden Single: r1c3=5
Naked Single: r3c3=9
Naked Single: r8c3=7
Full House: r7c3=6
Naked Single: r7c1=9
Naked Single: r4c1=4
Full House: r2c1=6
Naked Single: r4c6=3
Full House: r8c6=4
Naked Single: r7c4=7
Naked Single: r8c8=9
Naked Single: r4c4=2
Naked Single: r6c4=6
Full House: r6c2=7
Naked Single: r7c5=8
Naked Single: r9c4=9
Full House: r8c5=3
Full House: r8c7=8
Naked Single: r4c5=7
Full House: r5c4=4
Full House: r4c2=9
Full House: r5c2=6
Naked Single: r7c2=1
Full House: r9c2=8
Naked Single: r2c4=5
Full House: r3c4=3
Naked Single: r7c9=2
Full House: r7c8=4
Full House: r1c8=2
Naked Single: r2c9=9
Naked Single: r1c2=4
Full House: r1c7=6
Full House: r3c2=2
Naked Single: r2c7=4
Full House: r2c5=2
Full House: r3c5=4
Naked Single: r5c9=7
Full House: r5c7=9
Naked Single: r3c7=1
Full House: r3c9=5
Full House: r9c9=1
Full House: r9c7=7
|
easy
| null |
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