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?

  O O O O O O
O O O O O O O O
O O X X X X O O
O O O O O O O O
O X X O O X X O
O O X O O X O O
O O O X X O O O
  O O O O O O

Posted by Thalamus on 2004-05-05 11:03:46