shithub: riscv

ref: 6fb9ae8f4356f6b17f15894491d6339245dcd8ec
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..
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......28.
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342651978
856794123
719823465
625189347
471365892
983472516
137248659
564937281
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