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Snowie's error rate ranges and names revisited

Posted By: Daniel Murphy
Date: Monday, 8 December 2008, at 2:35 a.m.

In Response To: Snowie's error rate ranges and names revisited (Matt Cohn-Geier)

Matt wrote: Considering there are some 1,000+ grandmasters in the world... the gulf between Kasparov and GM #1,285 is enormous.

What percentage of rated chess players earn a Grandmaster title? The equivalent percentage of rated (tournament-playing) backgammoners might be called Grandmasters. That is, if it makes more sense (as I think it does) to say that 40 years there were half a dozen Grandmasters (none of whose ERs at the time would earn world class status now) than to say that 40 years ago there were no Grandmasters. How many tournament-playing backgammoners are there?

On the other hand, perhaps there is no reason to think that GM ability poses the same challenge in both games, such that a similar percentage of players are capable of reaching the standard.

Another approach would be to decide on what the backgammon equivalent of GM norms would would be, and how many backgammon players have earned them.

A Wiki article says that "grandmaster is typically in the top 0.02 percent at the time he or she earns the title." That's one in 5,000. I don't know if that's right, and the referenced link is dead, so I don't know what the "of what" in "top 0.02 percent of what" is (0.02% of FIDE players, or of all humans?).

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