When the 8 chess pieces of one color (pawns excluded) are placed alone on the board in the standard starting position, 51 different moves can be made.

How can these 8 pieces be placed in such a way that the largest number of different moves can be made?

+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   | Q |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   |   |   |   | K |   |
+---+---+---+---+---+---+---+---+
|   |   |   | B |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   |   | B |   |   | N |   |
+---+---+---+---+---+---+---+---+
|   |   |   | N |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   |   | R |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
|   | R |   |   |   |   |   |   |
+---+---+---+---+---+---+---+---+
An arrangement permitting 99 moves. 

Edited on June 11, 2009, 2:58 pm

Posted by Dej Mar on 2009-06-11 14:20:09