In order to make the game fair (and to ensure that games reach a conclusion before bedtime!) we use Chess clocks to limit the length of time players have to think about their next move. Each player has 25 minutes each to make all their moves, so a game can last for 50 minutes in total. If their time runs out, then they lose the game. In reality, most junior chess games finish in less than 30 minutes, and often finish within the first 10 minutes.

When the arbiter gives the instruction to start White’s clock, this begins the game. White makes their first move, and with the same hand then presses the button on the top of the clock which stops White’s clock counting down and starts Black’s clock counting down from 25 minutes. Each player can take as long as they like to make a single move, but must make all their moves in 25 minutes.