What is Fifty-move rule in chess?
A draw can be claimed if 50 moves pass with no pawn move and no capture.
The fifty-move rule prevents games from going on forever in positions where one side has extra material but cannot force checkmate. It is most relevant in complex endgames like bishop-and-knight versus lone king.
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- Perpetual checkAn endless series of checks that forces a draw by repetition.
- Algebraic notationThe standard system for recording chess moves using piece letters and square coordinates.
- PGN (Portable Game Notation)The standard text file format for saving and sharing chess games.
- FEN (Forsyth-Edwards Notation)A compact text string that describes the exact state of a chess position.
- MistakeA move that significantly worsens your position, but is less severe than a blunder.
- InaccuracyA move that is slightly suboptimal but does not throw away the game.