I would like to place atleast 2 white queens and atleast 2 black coins on a 5×5 chessboard,such that queens on either side cannot attack the opposing queens. What is the maximum no. of coins which can be placed on the board satisfying the stated constraint?
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I did 5. Who can do better ? – stity Jun 08 '17 at 11:46
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You could write a small program to find the solution – stity Jun 08 '17 at 11:54
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I wrote a small program to test all the possibilities and it appears that 7 is the maximum. Queens positions are B1 and E2
stity
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consider queens on A1 and B1. Then you can place 6 more opposite coloured Queens at C4, C5, D2, D5, E2, E3. – jaslibra Jun 08 '17 at 12:25
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I am not counting the white queens so 9 is the maximum number of total coins – stity Jun 08 '17 at 12:33