Chess clock

Chesspedition's chess clock turns a phone, tablet or laptop into a two-player clock. Choose a time control, such as 5 minutes or 15 minutes plus 10 seconds a move; Black taps to start White's clock, and each player taps their own half after moving. It adds the increment, counts moves and shows when a flag falls.

Black taps to start White's clock.

Time control

Time control

How to use it

  1. Choose a preset, or type the minutes each and the seconds added per move, and press Set.
  2. Put the device between you. Black taps their half to start White's clock.
  3. After each move, tap your own half (or press the space bar). Your clock stops, the increment is added, and your opponent's clock starts.
  4. Pause stops both clocks. Reset puts the chosen time back on both.

Questions

What does "5 + 3" mean?
Each player starts with 5 minutes and gets 3 seconds added after every move they make. This is called an increment, or Fischer time.
What happens when the time runs out?
The clock stops and shows whose time is up. That player loses on time, unless the opponent has no way left to give checkmate, in which case the game is a draw.
Will my screen switch off during the game?
The clock asks the browser to keep the screen on while a clock is running. Most current browsers allow it; if yours does not, raise the screen timeout in your device's settings.

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