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Calculate the number of solutions to place n queens on an n*n chess board, without any queen attacking each other. Options allow using rooks instead of queens, disabling knight attacks and setting the minimum distance between queens.
ictk - Internet Chess ToolKit is a java based set of libraries and widgets useful for performing common tasks such as reading PGN, FEN, and generating legal moves. The net libraries convert ICS (Internet Chess Server) output into java objects.