Chess clock

Two-player game clock with increment.

To begin, the player who moves second taps their side (or press Space to start Player 1’s clock).

Keyboard: Space ends the running player’s turn (or starts Player 1), P pause, R reset

Your time control and sound setting are saved on this device. A game in progress resets if you reload.

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How to use the chess clock

  1. Pick a time control, such as 5 + 0 or 3 + 2, or type your own minutes and increment in seconds.
  2. To start, the player who moves second taps their side, which starts the other player’s clock. Or press Space to start Player 1’s clock.
  3. After each move, tap anywhere on your side (or press Space) to stop your clock and start your opponent’s. When a clock reaches zero it turns red and an alarm sounds.

Time controls

The presets cover the common speeds: bullet (1 + 0, 2 + 1), blitz (3 + 0, 3 + 2, 5 + 0, 5 + 3), rapid (10 + 0, 10 + 5, 15 + 10) and longer games (30 + 0, 90 + 30). For anything else, type the minutes (decimals work, so 0.5 is 30 seconds) and the increment in seconds. Settings can only change before a game starts or after a reset.

Under 10 seconds the clock shows tenths of a second, and the time is underlined so a player under pressure notices.

Using it at the board

Tap anywhere on your side of the screen: the whole half is the button, and it reacts the moment your finger touches it. A short click sound confirms each press; untick Click sound for silent play. The clock works for any two-player game with turns, such as Go, Scrabble or draughts, not just chess.