Opposing pieces, traditionally designated White and Black, are initially lined up on either side of the board. Each type of piece has a unique form of movement and capturing occurs when a piece, via its movement, occupies the square of an opposing piece. Players take turns moving one of their pieces in an attempt to capture, attack, defend, or develop their positions. Chess games can end in checkmate (when the king cannot escape from the opponent’s pieces), resignation (when one player recognizes that defeat is inevitable and ends the game), or one of several types of draws.