Threefold repetition
Threefold repetition lets the player whose turn it is claim a draw once the same position has occurred at least three times, whatever order of moves produced it.
Also called: draw by repetition
Repetition draws are decided by positions, not by move sequences. Suppose both sides shuffle a knight out and back. After a few cycles the board, the side to move and everything that can legally happen next match an earlier moment, and once that has happened three times the player on move may claim a draw. The phrase "everything that can legally happen" is the detail that catches people out. A position where an en passant capture was available is not the same as one where it was not, and a position where a king or rook still held castling rights differs from one where the right has gone. A repetition can therefore be spoiled by a move you would never think of as progress. The claim is yours to make, and it is not automatic. You can make it when the third occurrence has just appeared and it is your move, or beforehand by writing the move you intend on your scoresheet and telling the arbiter you will play it. The clock is paused while the arbiter checks. A claim cannot be withdrawn, and a wrong one gives your opponent two extra minutes. Touching a piece first forfeits the claim for that move. Perpetual check is the classic use: the defender checks, the position recurs, and the draw is claimed. Fivefold repetition is the automatic version.
Also worth reading is Draw by agreement. A draw by agreement ends the game with a half point each when both players settle on a draw, which the Laws allow once each has made a move unless the rules of the event restrict it.
Also worth reading is Draw offer. A draw offer is a proposal to end the game in a draw; under the Laws it is made after you move and before you press your clock, carries no conditions, and cannot be withdrawn once made.
Knowing "Threefold repetition" is the easy part; what to practice next depends on your rating, and the improvement plans by rating band list the habits worth building at each level.
Related terms
Fivefold repetition is the rule that a game is drawn automatically, with no claim needed, once the same position has appeared at least five times.
A perpetual check is a run of checks that the defending king cannot sidestep, so the same positions recur and the game is drawn by repetition, rescuing the side that was losing.
A draw by agreement ends the game with a half point each when both players settle on a draw, which the Laws allow once each has made a move unless the rules of the event restrict it.
A scoresheet is the paper or electronic form on which each player writes down all the moves of the game in algebraic notation, and which both players sign or approve at the end to confirm the result.
The arbiter is the official who sees that the Laws of Chess and the rules of the event are followed, rules on disputes and claims, and can penalize rule breaches during a tournament.
En passant is a pawn capture that exists for one move only: after an enemy pawn leaves its starting square by two steps and stops beside your pawn, you may take it by moving to the square it skipped.
Guides that go further
What to decide first, the questions to ask, what a first lesson should show and the red flags to avoid.
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A game review, a read on your level and a written study plan from George Li.
Sources
- FIDE Laws of Chess (effective 1 January 2023), Article 9.2, read Oct 21, 2026.
- FIDE Laws of Chess (effective 1 January 2023), Article 9.2.3, read Oct 21, 2026.
- FIDE Laws of Chess (effective 1 January 2023), Articles 9.4 and 9.5, read Oct 21, 2026.
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