What’s a chess clock and how do they work? A:A chess clock is actually two clocks! When you’re thinking, your clock ticks down. After making a move, you hit a button at the top of the clock and your opponent’s clock starts ticking. If you run out of time, you lose the game, unless there is checkmate on the board or your opponent has insufficient mating material. There are two main types, the digital and analog clock. that is taken from the faq page on uscf website
Thanks NIKK...seen them before, but didn’t know how they were used in chess.