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The N Queens Puzzle

List of First Solutions

Chessboard Size 21 by 21

1, 3, 5, 2, 4, 9, 11, 15, 21, 18, 20, 17, 19, 7, 12, 10, 8, 6, 14, 16, 13

Diagram of the first possible solution to the "21 Queens on a 21 by 21 chessboard" puzzle
												Q
															Q
													Q
					Q
							Q
									Q
											Q
						Q
																		Q
																Q
																			Q
																	Q
																				Q
														Q
										Q
								Q
			Q
	Q
				Q
		Q
Q

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This web pagedocument was created and is maintained by Martin S Pearson.
Copyright © 2008–2018 Colin S Pearson and Martin S Pearson. Some rights reserved.

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Based on a work at CSP Queens.
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