Enter Your Reply The Comment You're Replying To John Smith wrote on Tue, Feb 10, 2009 08:38 PM EST:No, you are wrong, Mr. Duke. The truly essential piece is my Gorilla, which moves 4 King moves, capturing up to one, passing up to one piece. The Falcon is obviously derived from this, as it only moves thrice, cannot reverse, and cannot jump. The Knight is derived from it also, for it jumps for the entire journey, whereas my Gorilla jumps for one step. The Rook and Bishop extend its steps. It is moreover a superset because it can capture on any step, rather than the zenith. If you could muster an iota of intelligence, you could see this for yourself. Edit Form You may not post a new comment, because ItemID ChessboardMath6 does not match any item.