Arrange all 8 chess pieces of one set (no pawns) on a 5x6 board so no piece attacks another. Never mind that they're all the same color--it's "friendly fire". Be sure that the two bishops are on opposite-colored squares. There are 6 ways, not counting reflections and rotations.

I thought this was a pretty good problem... Not sure why nobody really responded well to it. Was it because of the difficulty of posting an answer?

Posted by levik on 2003-03-05 01:45:45