ELI5: Explain Like I'm 5

Chess clock

A chess clock is a special kind of clock that people use to play a game called chess. Chess is a game with two players who take turns moving pieces around a board. Each player has their own set of pieces, and the goal is to put the other player's main piece (the king) into a position where he can't escape being captured.

The chess clock helps the players make sure they don't take too much time making their moves. Each player has a certain amount of time to make all their moves. When it's their turn, they press a button on their side of the clock to start the clock and stop it when they finish their turn. This starts the other player's clock.

The chess clock has two timers on it, one for each player. They count down from the time that was agreed upon at the beginning of the game. If a player runs out of time before the game is finished, the other player wins.

The chess clock is helpful because it keeps the game moving along at a good pace, and it makes sure that each player gets the same amount of time to make all their moves. This makes it more fair and challenging for everyone who's playing.
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