ChessschoolHow does a chess clock work? 5+0, 10+5 and 15+10
Read a chess clock with confidence. Learn what 5+0, 10+5 and 15+10 mean and see how extra time per move works on a sample clock.
In brief
10+5 means both players start with 10 minutes. Each player gets five extra seconds after completing their own move. While White is thinking, Black’s clock is stopped.
See what happens on the clock
| Time control | Starting time per player | Extra after each move |
|---|---|---|
| 5+0 | 5 min | 0 s |
| 10+5 | 10 min | 5 s |
| 15+10 | 15 min | 10 s |
How does the clock switch sides?
In an online game the clock switches when you complete your move. Over the board, make your move and press your side of the clock with the same hand. Your clock stops and your opponent’s starts. Each player has a separate time allowance.
Which time control should you practise with?
Choose 10+5 if you want to gain a little time after each move. 15+10 gives you more time for difficult positions. At 5+0, every move comes out of the same five minutes. When your time is low, check for threats to the king and loose pieces before moving.
Try it yourself
Your clock shows 2:00 in a 10+5 game. You think for three seconds and finish your move. How much time remains?
Show the explanation
2:02. You spent three seconds and then gained five.