Chess clock Chess clock A chess clock consists of two adjacent clocks with buttons to stop one clock while starting the other, so that the two clocks never run simultaneously. Chess clocks are used in chess and other two-player games where the players move in turn. The purpose is to keep track of the total time each player takes for their own moves, and ensure that neither player overly delays the game. Chess clocks were first used extensively in tournament chess, and are often called game clocks. The first time that game clocks were used in a chess tournament was in the
David Pritchard (chess player) David Pritchard (chess player) David Brine Pritchard (19 October 1919 – 12 December 2005) was a British chess player, chess writer and indoor games consultant. He: gained pre-eminence as an indoor games and mind sports consultant, a role that he in effect created. A natural games player, it was to him that inventors or publishers would turn to organise a championship of a new game, write about it or generally promote it. Though nearly a million copies of his chess books have been sold, Pritchard is best known for authoring "The Encyclopedia of Chess Variants", in which he describes more