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Answer! Click here to reveal It is not possible to completely cover every square of the mutilated chessboard with the 31 dominoes. Details! Click here to reveal Every domino whether plac...
#1: Initial revision
<details> <summary>Answer! Click here to reveal</summary> It is not possible to completely cover every square of the mutilated chessboard with the 31 dominoes. </details> <br><br> <details> <summary>Details! Click here to reveal</summary> Every domino whether placed horizontally or vertically will cover exactly one black square and one red square. So 31 dominoes would cover 31 black squares and 31 red squares. **But** the mutilated chessboard has 32 black squares and 30 red squares. Therefore the covering is not possible. There is a Wikipedia article about this puzzle: https://en.wikipedia.org/wiki/Mutilated_chessboard_problem </details> <br>
