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A dozen Knights (Posted on 2004-05-05) Difficulty: 3 of 5
After removing the four corner squares of a chessboard, is it possible to place a dozen knights on the remaining board so the sixty squares are under attack?

See The Solution Submitted by Federico Kereki    
Rating: 3.0000 (2 votes)

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Solution Asymmetrical solution | Comment 4 of 5 |
.OOOOOO.
OOOOOOOO
OOnnnnOO
OOOOOOOO
OnnOOnnO
OOOOOnOO
OnOnnOOO
.OOOOOO.

Knights are "n", empty squares are "O", corners are "."

  Posted by e.g. on 2004-05-07 11:50:25
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