半打黑趵：
A Pencil and Paper Algorithm for Solving Sudoku Puzzles
[阅读: 209] 2009-05-14 01:44:24
http://www.ams.org/notices/200904/tx090400460p.pdf <a href="http://www.erepublik.com/en/referrer/lufberry">电子共和国</a>
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