Ok here's the deal. I've got a chess game for the pc. I was just looking through some of the tutorials and was looking at the promoting part (where you can exchange a pawn for another piece).
It set this scenario and asked what was the best piece to change the pawn for in c7. It gave you 4 options: queen, bishop, rook, knight. Now to my mind, there's no point promoting to either a bishop or a rook when a queen can do both jobs. Anyway to cut the story short it said the rook was the best piece to change to. Can anyone shed any light on this cause I can't see why it wouldn't have chosen the queen?