Rules of chess are variations of the rules for fast chess, correspondence chess, online chess, and Chess960. Chess is a two-player board game utilizing a chessboard and sixteen pieces of six types for each player. Each type of piece moves in a distinct way. The goal of the game is to checkmate (threaten with unescapable capture) the opponent's king. Games do not necessarily end with checkmate; players often resign if they believe they will lose. A game can also end in a draw in several ways. Besides the basic moves of the pieces, rules also govern the equipment used, time control, conduct and
Kriegspiel (chess) follows. The game is played with three boards, one for each player; the third is for the umpire (and spectators). Each opponent knows the exact position of just their pieces, and does not know where the opponent's pieces are (but can keep track of how many there are). Only the umpire knows the position of the game. The game proceeds in the following way: The umpire announces: Pawn promotions are not announced. Kriegspiel is sometimes used in chess problems. In these, usual variations introduced by different black moves are replaced by variations introduced by different announcements. An example of a