#6 – Queens
You are to place as many queens as you wish on a standard chessboard. In doing so, you must place an odd number of queens in each row and column. In how many different ways can you do this? (You may send in your answer as a mathematical expression.)
The Prize for This Question: Rubik’s 5×5 Cube
The Winner of Puzzle #4: Abdullah Çağlar Öksüz
This question was prepared by Emrehan Halıcı, president of the Turkey Intelligence Foundation, for Bilkent IEEE.