Perpetual check is a situation in chess where one player continuously checks the opponent’s king, making it impossible for them to escape the series of checks. This typically happens when the player delivering the checks keeps moving their pieces in a way that forces the opponent’s king into a cycle of being checked, often with no way for the opponent to defend or move their king to safety. The game can end in a draw if this situation continues, as the opponent cannot avoid the repeated checks. Perpetual check is often used as a defensive tactic when a player is losing but wants to avoid checkmate.

英語での「perpetual check」の定義と意味

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