Queens on a donut

1 · John Cook · Aug. 18, 2021, 11:26 a.m.
The eight queens problem is to place eight queens on a chessboard so that no queen attacks another. Because queens are allowed to move any number of spaces horizontally, vertically, or diagonally, this means no queen can be on the same row, column, or diagonal as any other queen. For example, the following image gives […] The post Queens on a donut first appeared on John D. Cook....