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On May 20, 7:57 am, "Chess One" wrote:

**let me digress a moment back to the nominal topic - I have read that the
top 5 players by ELO [I suppose retro calculated for some] in terms of
/actual performance ratings/ were otherwise than the thread title. I think
it goes something like 3,000 for Fischer, but wait - let me dig up both sets
of numbers and who calculated them:

Here is Kevin O'Connell's analysis, as published by Ray Keene:-

Fischer, US Champ 1963, = 3,000
Karpov, Linares, 1994 = 2977
Kasparov, Tilburg 1989 = 2913
Alekhine, San Remo, 1930 = 2906
Sophia Polgar, Rome 1989 = 2879

Okay - according to 'a different and older source [1986]' the list is:-

Fischer, Buenos Aires 1970 = 2850
Karpov, Waddinxween 1979 = 2848
Capablanca, Hastings 1919 = 2826
Torre, Manila 1975 = 2826
Kasparov, Niksic 1983 = 2814

What is immediately noticeable is Fischer at #1 and Karpov at #2 fna
Kasparov at #3 & #5 resp - and for /entirely different events!/ I also note
that the Fischer differentail is 7 years, Karpov's is 5 years, Kasparov's 6
years. Certainly no 'flash in the pan' scores - but persistent high level
performance over half a decade.

It would be interesting to compare both Alekhine and Capa's top performances
over a similar period - say 10 years, and to assess both concistancy and
degree of domination in world chess.

The other interlopers to these 'top 5' charts are Torre, and Sophia. Polgar.
I don't know what increment Torre managed with that performance rating of
2826 [200 points?] against his overall rating, but I do know Polgar's was
2299 when she scored 2879, which is an increment in performance of 580
points. I think that happens to be the largest ever 'jump' in performance
for an established player at this level. Does anyone know of anything even
slightly similar?

Phil Innes