Datasets:
imone
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sudoku-hard-v2

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8 values
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81
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1.....2...9...7..8....9.4....3.56....6.9....5.....8.2.4..7..8..3......1..8..6...7
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52
puzzles4_forum_hardest_1905
2..7..4.......1.27.5......3.7..6..8.....1..4.8..2.4..9.8...59...26......9..3...7.
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8
puzzles2_17_clue
.8....46...5.8..2.....6.......3............1.3..4.7......9..3.561................
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0
puzzles4_forum_hardest_1905
........7..6.8..4..1.5.46..2..........1.784.....3...8......5.1..9.7.......7.61..4
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18
puzzles4_forum_hardest_1905
.....2..3.2.....6.4...9.2...4...9.2.8..3...7..37..64...9...36.....1...9...5......
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11
puzzles4_forum_hardest_1905
.....9..5..1.......4.71..9...43...7.7...429.1.9.......4...3..1....2..8....3..6...
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34
puzzles4_forum_hardest_1905
.891...2.1...5..........8...7.8....2..6..3...4.....7...179..2..62..8...9.......1.
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26
puzzles1_unbiased
.4...7...7...2.3.5.29..3.6..8....75.1.....2....2..6..3.513.2.....6.85............
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0
puzzles4_forum_hardest_1905
2..41......9.5.....6..92..7.981.....6....9..8.7....3....6..4..2.......54.4....83.
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43
puzzles4_forum_hardest_1905
....68.....81...6....57.....4.8..9..2.......3..6.5..7...17...8..3....2..9.......4
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29
puzzles4_forum_hardest_1905
.....691.1..87..6..6......7.4..3.......9..5..8....1..22....7..8....9.4....35.....
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14