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Question: Queens puzzle.
The eight queens puzzle is the problem of placing eight chess queens on an 8×8 chessboard so that no two
queens threaten 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 problem of placing n nonattacking
queens on an n×n chessboard.
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Write a macro to find ONE solution of n queens problem:
1. Create a macro called queen with one parameter which is the size of the chessboard;
a. Macro call by %queen(n);
2. Create a TEMPORARY dataset called QUEENn (figure 3 & 4) to store the result of chess placed;
a. Create n variables to store the puzzle;
b. Place the chess randomly;
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