The problem first appeared in 1869. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. A chess problem that has stumped mathematicians for more than ...
"Eight Queen" was a puzzle proposed by Chess player Max Betzel in 1848. On the chess board of 8 × 8 square, 8 pieces of Queen / Queen which can go anywhere in the vertical and horizontal directions ...
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