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Spiegazione
La regola delle settantacinque mosse è un limite automatico per le posizioni che continuano senza mosse di pedone né catture. Quando ciascun giocatore ha eseguito almeno 75 mosse consecutive in queste condizioni, la partita termina con una anche se nessuno la richiede.
Qualsiasi mossa di pedone o cattura azzera il conteggio. Le 75 mosse indicano 75 azioni del Bianco e 75 del Nero, quindi la sequenza comprende 150 turni individuali.
La differenza fondamentale rispetto alla riguarda la procedura: a 50 il giocatore al tratto può presentare una richiesta; a 75 il risultato è automatico. Esiste un'eccezione espressa. Se l'ultima mossa della sequenza dà scacco matto, cioè il re è attaccato e non ha risposte legali, il matto ha la precedenza e la partita viene vinta.
Confusioni comuni
La patta annulla il matto alla mossa 75
No. Se la mossa che completa la sequenza dà scacco matto, il matto ha la precedenza.
Fonti
- 1.Article 9: The Drawn Game, FIDE Rules Commission
- 2.Leyes del Ajedrez 2023, FIDE Rules Commission
- 3.Glossary of Terms in the Laws of Chess, FIDE Rules Commission