Comments for Modeless in Cyberspace http://nomodes.com/blog1 Puzzles, whatever Fri, 09 May 2008 20:18:49 +0000 http://wordpress.org/?v=2.0.2 Comment on Perfect Han’en special solving technique by larrytesler http://nomodes.com/blog1/archives/5#comment-8 Tue, 04 Jul 2006 14:56:14 +0000 http://nomodes.com/blog1/archives/5#comment-8 Here's a hint. According to <a target="_blank" href="http://www.afjarvis.staff.shef.ac.uk/sudoku/sudoku.pdf" rel="nofollow">this paper</a> and other sources, there are almost <nobr>7x10<span style="font-size:0.7em;vertical-align:super;">21</span></nobr> Sudoku grids. In contrast, there are fewer than 15,000 Perfect Han'en grids. Here’s a hint.

According to this paper and other sources, there are almost 7×1021 Sudoku grids.

In contrast, there are fewer than 15,000 Perfect Han’en grids.

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