A 136-knight covering of a 30x30 board
Found Sept. 20, 2003 by Frank Rubin
A 136-knight generalized Monier pattern covering of a 30x30 chessboard
Found Sept. 16, 2004 by Frank Rubin
A 135-knight covering of a 30x30 board
Found Sept. 14, 2004 by Frank Rubin
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