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bishops problem
To find the maximum number of bishops (pieces capable of moving any number of spaces along diagonals of their own color) that can be placed on an n × n chessboard in such a way that no two are attacking each other. The answer is 2n - 2, which gives the solution 14 for a standard (8 × 8) chessboard. The numbers of distinct maximal arrangements for n = 1, 2, ... bishops are 1, 4, 26, 260, 3368, ...
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• GAMES AND PUZZLES
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