A comprehensive guide of chess: history, famous games and players, rules, strategy, tactics, chess and the computer, documentation and literature, variants. Chess (the "Game of Kings") is a board game for two players, which requires 32 chesspieces (or chessmen) and a board demarcated by 64 squares. Gameplay does not involve random luck; consisting solely of strategy, (see also tactics, and theory). Chess is one of humanity's more popular games; it is has been described not only as a game, but also as both art and science. Chess is sometimes seen as an abstract wargame; as a "mental martial art".