Originally posted by WulebgrWhy not just move the king over one, then promote? That will avoid the ensuing run-around.
The best piece is the one that works best in the given position. Sometimes a knight is better than a rook, and in the position below, with white on move, a rook is better than a queen.
[fen]8/k1P5/2K5/8/8/8/8/8 w - - 0 1[/fen]