1. Smallest Number Of Queens Another presentation by Domenic Acitelli

2. Instructions In this challenge you must place the smallest number of queens on a 3x3 chess board, 4x4 chess board, 5x5 chess board and on a 6x6 chess board so that all the squares on the board occupied by the queen.

3. 3 x 3 Chess Board. A 3 x 3 chess board only has one very simple solution, using only one queen.

4. 4x4 Chess Board On a 4x4 chess board you only need two Queens.

5. 5x5 Chess Board On a 5x5 one I used three queens that occupied all the squares.

6. 6x6 On a 6x6 chess board there is only one solution using four queens.