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75-move rule

The 75-move rule is a regulation in chess that states if no capture has been made and no pawn has been moved in the last 75 moves (by each player), the game is automatically declared a draw.

This rule is designed to prevent excessively long games and ensure that games with no progress or possibility of a decisive result are concluded in a timely manner.

Related terms: 50-move rule, draw, stalemate, insufficient material, endgame, chess rules, FIDE Laws of Chess, threefold repetition, perpetual check, dead position

Why is the 75-move rule important?

The 75-move rule is important because it serves as a safeguard against games that could potentially continue indefinitely without any progress being made. In some endgame positions, it is possible for players to avoid making captures or moving pawns while still maintaining a legal position.

The 75-move rule ensures that such games are eventually declared a draw, preventing unnecessary prolongation and promoting decisive play.

Examples of the 75-move rule

  1. In a knight and bishop versus king endgame, the defending side can avoid capture indefinitely, but the 75-move rule will eventually come into effect, resulting in a draw.
  2. Two players reach a rook and pawn endgame where no progress is being made. After 75 moves without a capture or pawn move, the game is declared a draw under the 75-move rule.

Variations of the 75-move rule

The 75-move rule is an extension of the more commonly known 50-move rule. The 50-move rule states that if no capture has been made and no pawn has been moved in the last 50 moves (by each player), either player can claim a draw.

The 75-move rule automatically declares the game a draw without requiring a player to claim it.

Famous examples of the 75-move rule

While the 75-move rule is rarely invoked in high-level chess, there have been some notable instances where it has come into play:

  1. In the 1989 World Chess Championship match between Garry Kasparov and Anatoly Karpov, game 5 ended in a draw under the 75-move rule after 102 moves.
  2. In a 2015 Chess.com online blitz game, Grandmaster Hikaru Nakamura and International Master Levy Rozman reached a position where no capture or pawn move had occurred for 75 moves, resulting in an automatic draw.

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