Tournament play · 7 min read
When to call the arbiter (and how to do it properly)
The arbiter is not a referee you call when you are upset. They are the person whose job is to restore a correct game, and calling them early is almost always better than arguing at the board.
The mechanics are the same every time: stop the clock, raise your hand, wait, explain briefly and factually. Never re-arrange the pieces before the arbiter arrives.
Situations that need an arbiter
- An illegal move has been played or completed by either player, including an impossible castling or leaving a king in check.
- The position or the pieces are disturbed, or you disagree about what the position should be.
- A clock problem: wrong times set, wrong increment, a clock that did not switch, or a flag that has fallen.
- A phone rings, a device is used, or you believe outside help is involved.
- You want to claim a draw by threefold repetition or the 50-move rule, or claim a win on time.
- Your opponent is distracting or annoying you and asking them to stop has not worked.
- You need to leave the board for a medical reason, or anything unusual happens that the rules do not obviously cover.
How to call correctly
- Stop the clock (pause it) so neither player loses time during the discussion.
- Raise a hand and wait quietly; do not shout across the hall or chase the arbiter mid-round.
- State facts, not opinions: 'my opponent castled with a rook that had moved on move 14' is useful; 'he is cheating' is not.
- Have your scoresheet ready — most claims are resolved from the scoresheets.
- Accept the decision at the board. If you disagree, ask about the appeals procedure afterwards rather than debating during play.
The claims that depend on your scoresheet
Threefold repetition and the 50-move rule are claims, not automatic draws, and the arbiter needs a complete scoresheet to verify them. If your notation has gaps, you may simply be unable to claim a draw you are entitled to.
The same applies to reconstructing a position after a dispute: whichever sheet is complete and legible tends to decide what the position was.
Illegal moves and penalties
- In standard play, FIDE rules give the opponent extra time for the first completed illegal move; the second illegal move by the same player loses the game.
- In rapid and blitz, the specific handling differs and depends on the event's regulations and whether an arbiter observed the move.
- Do not punish an illegal move yourself and do not let it slide out of politeness — call the arbiter and let them apply the rule.
What not to call the arbiter for
- A move you regret, or an opponent who is simply better than you.
- Normal noise in a playing hall, unless it is genuinely disturbing and repeated.
- Asking whether a move is good, whether a position is drawn, or how many moves have been played — arbiters do not advise on chess content.
Key takeaways
- Stop the clock, raise your hand, state facts, keep the position untouched.
- Illegal moves, clock faults, devices and draw claims all need an arbiter.
- Repetition and 50-move claims require a complete scoresheet.
- Argue with the process afterwards, never with your opponent mid-game.
Frequently asked questions
- Can I pause the clock to call the arbiter?
- Yes. Stopping the clock is the correct first step when you have a claim or a dispute, so that neither player loses time.
- What happens after an illegal move in a classical game?
- Under FIDE rules the position is restored, the opponent receives extra time for the first offence, and a second illegal move by the same player loses the game.
- Should I tell the arbiter if I made the illegal move myself?
- Yes. Reporting it yourself is honest, correct and usually treated well.