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The eight queens puzzle is the problem of putting eight chess queens on an 8×8 chessboard such that none of them is able to capture any other using the standard chess queen’s moves. The queens must be placed in such a way that no two queens would be able to attack each other. Thus, a solution requires that no two queens share the same row, column, or diagonal.
The eight queens puzzle is an example of the more general n queens puzzle of placing n queens on an nxn chessboard, where solutions exist only for n = 1 or n >= 4.
Place eight queens on the chessboard such that no queen attacks any other one. A mouse click on any empty field of the chessboard puts a queen into this field.
Place eight queens on the chessboard such that no queen attacks any other one. A mouse click on any empty field of the chessboard puts a queen into this field.

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