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149 (another Prime Pages' Curiosity) |
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Single Curio View: (Seek other curios for this number) There are 149 ways to put 8 queens on a 7-by-7 chessboard so that each queen attacks exactly one other queen. [Gardner]
Submitted: 2001-08-14 16:39:26; Last Modified: 2009-02-18 22:28:16.
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