Chessboard and Domino problem

  
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Last problem posted :


Paul Valle    (2011-01-09 00:42:23)
Chessboard and Domino problem

You are given 31 domino pieces (that each cover two squares of the board) to cover the remaining 62 squares in the ChessPosition (see diagram) below. No matter how you twist and turn those dominoes you can't complete the task. Why?


8
7
6
5
4
3
2
1
a b c d e f g h




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