shithub: riscv

ref: 36876b95224938d1388ca04d5dc5dc40481dcdd3
dir: /sys/games/lib/sudoku/boards/easy-2005-02-03.su/

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.768.....
......2.6
...96..58
.59..13..
3..759..2
..83..94.
94..38...
6.3......
.....463.
576812493
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259481367
364759812
718326945
947638521
623195784
185274639