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In how many ways you can put three rooks on a chessboard so that no two of them are in same row ,column or diagonal.

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This is OEIS A047659 "Number of ways to place 3 nonattacking queens on an n X n board."

http://oeis.org/A047659

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    queen != rook (:2012-04-15
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    @Douglas, that's as may be, but look at the original question, which asks the rooks not be on the same diagonal. For this problem, those rooks have been promoted to queens!2012-04-15
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    Oops! You're right.2012-04-15
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    :) Thanks, Gerry, for pointing it out.2012-04-15