shithub: riscv

ref: 52ad5b3ec5138a85e4c976013adbc54642f19b74
dir: /sys/games/lib/sudoku/boards/easy-2005-03-09.su/

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34...1..8
.56......
.1.82....
..51...47
4..3.5..2
98...25..
....48.5.
......28.
2..5...34
342651978
856794123
719823465
625189347
471365892
983472516
137248659
564937281
298516734