Beginners
Chess Time Controls and Clocks Explained
A chess clock is two timers joined together. When you finish your move you press your button, your timer stops and your opponent's starts. If your time runs out, you can lose the game even with a winning position. That single rule changes how chess is played, and the amount of time you get, the time control, decides what kind of game you are in.
How time controls are written
Time controls are usually written as two numbers: the starting time in minutes and the increment in seconds. "5+3" means each player starts with five minutes and gains three seconds after every move. "10+0" means ten minutes each and no extra time at all. Longer tournament controls can have several stages, such as "90 minutes for 40 moves, then 30 minutes for the rest of the game, with 30 seconds added per move from move one", a control widely used in FIDE-rated events.
The FIDE categories
The FIDE Laws of Chess define rapid and blitz using a simple formula: take the starting time and add 60 times the increment. This gives the time each player has in a game that lasts 60 moves.
| Category | Time per player (base + 60 × increment) | Typical examples |
|---|---|---|
| Blitz | 10 minutes or less | 3+2, 5+0, 5+3 |
| Rapid | More than 10 minutes but less than 60 minutes | 10+5, 15+10, 25+10 |
| Standard (classical) | 60 minutes or more | 90+30, 90/40 + 30 with 30-second increment |
The formula explains a few surprises. A 3+2 game counts as blitz: 3 minutes plus 60 × 2 seconds is 5 minutes. But 10+5 is rapid, because 10 minutes plus 5 minutes of increment comes to 15. FIDE keeps separate rating lists for standard, rapid and blitz, so a player can be rated very differently in each.
Bullet
Bullet is not a FIDE category. It is an online term for very fast games, usually one or two minutes per player, such as 1+0 or 2+1. Websites draw their own lines between categories. Lichess, for example, estimates game length as the starting time plus 40 times the increment and calls anything under three minutes bullet. So the same time control can carry a different label on different sites and in FIDE events.
Increment and delay
Without any added time, a player can lose a completely won position simply because there is not enough time to make the remaining moves. Modern clocks fix this in two main ways.
Increment (also called Fischer increment, after Bobby Fischer, who patented a clock that added time) gives you a fixed number of seconds after every move. Move quickly and your clock can grow. With a 3+2 control, if you spend one second on a move, you finish that move with more time than you started it with. This is the system used in nearly all FIDE events and online play.
Delay works differently. With simple delay, your clock waits a few seconds before it starts counting down on each move. If you move within the delay, you lose no time at all, but you can never build up extra time. The Bronstein delay has the same effect in a different way: after each move the clock gives back the time you used, up to the delay amount. Delay is common on clocks used in the United States, where many events use it in place of increment.
The practical difference: with increment, quick moves bank time for later; with delay, quick moves only stop the bleeding. In a long endgame, both make it possible to keep playing properly rather than losing on time.
Losing on time, and when it is a draw
Under the FIDE Laws, if your flag falls (your time runs out) before you complete the required moves, you lose. There is one important exception: if your opponent cannot checkmate you by any possible series of legal moves, the game is a draw instead.
Note how strict the exception is. It is not enough that your opponent is unlikely to win. If they have, say, a lone knight against your king and pawns, a checkmate is still possible in some position (with your own pieces blocking your king), so running out of time usually still loses. Online sites apply their own versions of this rule automatically.
A few clock rules every over-the-board player should know: press the clock with the same hand you used to move the piece, do not hold your hand over the clock, and do not press it before your move is complete on the board. Flagging, winning by letting the opponent run out of time, is a legal and normal part of fast chess, but deliberately knocking pieces over or hammering the clock is not.
Time management habits
Most players do not lose on time because the clock is too fast. They lose because they spend time in the wrong places. A few habits help at every time control.
- Play the opening at a steady pace. Moves you know well should cost seconds, not minutes. Save your thinking for the first unfamiliar position.
- Spend time at critical moments. These are the moments when the position changes character: a possible sacrifice, a decision to trade queens, a pawn break that cannot be undone, or a moment just after your opponent did something unexpected.
- Do not use your time to double-check obvious recaptures. If a piece was taken and there is only one sensible way to take back, take back.
- Set a rough budget. In a classical game with 40 moves to make in 90 minutes, that is about two minutes a move on average. If you are at move 15 with 30 minutes left, you know you must speed up before it is a crisis.
- Think on your opponent's time. Use their thinking time to look at the position in general terms: which pieces are badly placed, what plans each side has. Then your own clock is for concrete calculation.
- Avoid perfectionism. When two moves look about equal, pick one. Spending ten minutes to decide between two good moves is one of the most common ways to end up in time trouble.
Which time control should you play?
For improving, longer games are better. Rapid games of 15+10 or longer give you time to calculate, use what you have studied and form plans, and they are long enough that your mistakes are real chess mistakes rather than mouse slips. Blitz and bullet are fun and train pattern recognition and quick decisions, but a diet of only bullet tends to build habits like premoving and hoping instead of thinking. A good balance for most club players is to play most of your serious games at rapid or classical and treat blitz as a break.
Key takeaways
- FIDE classifies games by base time plus 60 times the increment: 10 minutes or less is blitz, more than 10 and under 60 is rapid, 60 or more is standard.
- Increment adds time after every move; delay protects you from losing time on quick moves but never adds to your total.
- Running out of time loses, unless the opponent has no possible way to checkmate, in which case it is a draw.
- Practise with a game against the computer using a fixed time budget, and test fast pattern recognition with puzzle rush.