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Lyndenlea

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The First Solutions
Chessboard size 27×27

1, 3, 5, 2, 4, 9, 11, 13, 15, 17, 19, 23, 25, 27, 24, 26, 6, 10, 7, 16, 8, 12, 14, 21, 18, 20, 22

Diagram of the first possible solution to the 27 Queens on a 27x27 chessboard problem