Just the Rules: 2025 US Chess Rulebook Update News | US Chess.org
One of the rare years when the rules changes (for play) are just clarifications. The certification renewal changes were made to accommodate TDs who were taking subordinate positions rather than being chief TDs, but those were not changes that affected play.
The FIDE conversion change affects assigned pairings but not play.
Can anyone speak to the rules related to FIDE rating conversions for players who have much lower US Chess ratings? I’ll give you three related but independent hypothetical situations. They all relate to Player A, who lives in Puerto Rico, has a well-established FIDE rating of 1840. Under the conversion formula his rating would convert to 1791. He has a US Chess rating of 600/P6 from a chess camp tournament he attended a few years ago.
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In a tournament with sections for A, B, C, D, E and under, what section do you put him in?
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Changing the facts slightly for player A, he has played in a couple more US Chess events. His rating is now 900/P18. In his last event his performance rating was 1400. He had wins over a couple of 1100-ish players and draws with a couple of C players, but also had a loss to a 1200 as well as to a couple of higher rated players. Same tournament boundaries, what section do you put him in?
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Same player and facts, but he has played enough US Chess rated games to have an established rating of 1200. What section do you put him in?
If the player has an official US Chess rating for the relevant rating system in the current supplement, I use that rating.
Period.
Pe. Ri. Od.
The guy is underrated, you say? Meh. That will fix itself in time.
Why does rule 5C still start out by saying “There are four rating systems”? That is incorrect. US Chess has 3 OTB rating systems, 3 online rating systems, and a correspondence rating system.