# Questions tagged [75-move-rule]

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### What is the need for repetition rules given the 50 & 75 move rules?

Given the existence of the (optional) 50-move rule and the (mandatory) 75-move rule, are the (optional) threefold-repetition rule and the (mandatory) fivefold-repetition strictly necessary? Do the ...
560 views

### Longest possible game of Horde Chess

The longest possible normal game of chess has been calculated, but I want to know what the longest possible game of Horde Chess is. What makes this an interesting case is the crazy amount of pawn ...
823 views

### EXTENDED New Year's Math Riddle: 5-fold repetition & 75-move rules

This puzzle extends Rewan Demontay's New Year Math Riddle. Rewan asked (essentially): if the players co-operate, what's the largest number of times a given diagram can occur in a game before reaching ...
13k views

### Why is there a 50-move rule and a 75-move rule?

Logically, if 75 moves have been played, 50 moves would've also been played. This sounds ridiculous. It is like saying "I would buy this book if it cost under \$60 and it costs under \$40". So,...