The QUEEN is a certain chess piece that is five letters long. It is the most powerful piece on the board and can move in any direction, including diagonally, for any number of squares. The PAWN is a four letter piece that moves forward one square at a time, but can capture an opponent's piece by moving diagonally. The BISHOP is a six letter piece that can move diagonally for any number of squares. The King and Knight are both eleven letter pieces. The King is the most important piece and can move one square in any direction. The Knight is the only piece that can jump over other pieces and can move in an 'L' shape.