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
Oskar Piotrowski (chess player) Oskar Piotrowski (chess player) Oskar Piotrowski (? - ?) was a Polish chess master. In 1902, he played in several chess tournaments in Berlin; took 2nd, behind Eduard Dyckhoff, in the Berlin "Finckenschaft-Turnier", tied for 4-5th in the Café Kerkau Free Tournament (Curt von Bardeleben won), lost a game to Ranneforth in a match Anderssen Chess Club vs. Berlin Finckenschaft Club, tied for 2nd-3rd with Erich Cohn, behind Ossip Bernstein, in the Berlin Summer Tournament - Section I ("Quadrangular"), and shared 2nd with Moritz Lewitt, behind Bernstein, in the 1st Tournament of the General Chess Federation of Berlin. In that