Consider a 5 by 5 Chess Board. Is it possible to place
5 Queens on the board such that three pawns can safely
be placed on the board? (aka, by carefully choosing where
to place the 5 queens, can you arrange it so that there
are 3 squares on the board that none of the queens can
attack)
(From - http://www.princeton.edu/~sjmiller/riddles/riddles.html)
This solution is invalid, as pointed out in the next post.
Queens on A1, A5, C5, E5, and E1. Pawns can then be placed on B3, C2, and D3.
Edited on September 27, 2004, 1:50 am
Another solution
