shithub: riscv

ref: 17f7f6be4e1a316c0f5f26ff70e047aece4de2bc
dir: /sys/games/lib/sudoku/boards/medium-2005-05-20.su/

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.4.83.7.9
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9.5......
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8.9.21.3.
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184956327
362147985
416378592
253469178
879521634