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
Chess 2: The Sequel system. Each player begins the game with three stones. Whenever a capture is made, the defending player may initiate a "duel." In a duel, the players secretly "bid" up to two stones. After revealing the bids, the stones are removed from the game; if the defender spent more stones than the attacker, both the attacking and defending pieces are captured. More stones may be earned by capturing enemy pawns. Sirlin's intention with this mechanic was to allow players to dynamically evaluate the worth of their pieces throughout the match. A video game version of "Chess 2" was released on Ouya