1. N-queen problem
    The n queens puzzle is the problem of placing n chess queens on an n×n chessboard so that no two queens threaten each other. Thus, a solution requires that no two queens share the same row, column, or diagonal. Solutions exist for all natural numbers n with the exception of n=2 or n=3
    Test Data: n= 8, 16, 24, 32, 50, 100

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