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## The Eight Queens

Logic puzzles require you to think. You will have to be logical in your reasoning.

 Puzzle ID: #39142 Fun: (2.15) Difficulty: (2.82) Category: Logic Submitted By: Hrsemn4

One of the most famous logic puzzles is the "Eight Queens puzzle". The object of this puzzle is to place 8 chess queens on a standard 8x8 chessboard so that no queen can be captured by any of the other queens.

Logically, no queen can share the same row, column, or diagonal with any other queen.

Can you discover an arrangement that works?

There are actually 12 completely unique solutions to this puzzle (unique meaning not simply rotating or flipping the board).

Using a standard system of numbering rows 1-8 moving away from the player and noting columns with letters a-h, here are the solutions:

1) a1, g2, e3, h4, b5, d6, f7, c8
2) a1, g2, d3, f4, h5, b6, e7, c8
3) c1, a2, g3, e4, h5, b6, d7, f8
4) d1, a2, e3, h4, b5, g6, c7, f8
5) e1, a2, h3, d4, b5, g6, c7, f8
6) e1, a2, d3, f4, h5, b6, g7, c8
7) e1, a2, h3, f4, c5, g6, b7, d8
8) e1, c2, a3, g4, b5, h6, f7, d8
9) e1, g2, a3, d4, b5, h6, f7, c8
10) f1, a2, e3, b4, h5, c6, g7, d8
11) f1, c2, a3, h4, d5, b6, g7, e8
12) g1, a2, c3, h4, f5, d6, b7, e8

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 sioga Nov 15, 2007 that was easy with a chess board.but this is not fair for those who never play chess before. jamesbond Nov 25, 2007 nice one...have seen that before...but never knew it had 12 unique solutions...thanks keep it up! zeepuzzlemaster Nov 25, 2007 lol the answer to the question is yes dswilborn Jun 21, 2008 There was a game on Yahoo that tested your ability to place eight pieces on the chess board. DarthKaan Feb 23, 2010 What about: h1, f2, d3, b4, g5, e6, c7, a8? grace317 Apr 22, 2015 I got a1 b5 c2 d6 e3 f7 g4 h8, it's not in any of the 12 answers stated but I don't see why this doesn't work! I don't play chess so if any chess player would like to enlighten me that would be awesome. grace317 Apr 22, 2015 I got a1 b5 c2 d6 e3 f7 g4 h8, it's not in any of the 12 answers stated but I don't see why this doesn't work! I don't play chess so if any chess player would like to enlighten me that would be awesome.