Abstract: According to some embodiments, a digital signage system plays content. According to some embodiments, content may vary based on various circumstances.

Abstract: Various embodiments of the present invention include a chess clock with a first display facing in one direction and a second display facing in an opposite direction. Each of the first and second displays may display information about a single player of a chess game. Such information may include a time remaining in the game. A chess clock of the present invention may afford spectators and chess tournament directors a view of a player's time remaining from a wide range of vantage points. Various embodiments of the present invention include a chess clock with four displays, two displays corresponding to each of two players. The two displays corresponding to a given player may face in opposite directions. Various embodiments of the present invention include a chess clock suitable for simultaneous use in two separate chess games, or for use in a game of bughouse.