100%ers

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Richard Bates
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Re: 100%ers

Post by Richard Bates » Mon Apr 28, 2014 9:28 pm

Stewart Reuben wrote:.

To determine the official FIDE Tournament Performance Rating add 800 to the Ra, average of opponent's ratings.
800 is just a number chosen by FIDE so that TPR of 100%ers can be quoted. You can make just as good a case for 1000 or 2000. 50 is the equivalent ECF Grading Rule.
I would suggest determining the rating performance of a 100% score by determining the rating of the opponent against which would it would be required to maintain that performance with a draw. So, for example, Yang-Fan's performance would have been 2760 ((2238(ave opposition)*9+2760)/10)+470=2760. 470 being the addition for a 95% score. That expanding the number of draws would give a different answer is a minor detail... Silly non-linear system ;)

Stewart Reuben
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Re: 100%ers

Post by Stewart Reuben » Tue Apr 29, 2014 2:16 am

The Wikipedia List is interesting. Excluding less than 9 games.
Gustav Neumann Berlin 1865 (34/34) #
Henry Atkins Amsterdam 1899 (15/15)
Emanuel Lasker New York 1893 (13/13)
José Raúl Capablanca New York 1913 (13/13, including one default)
Alexander Beliavsky Alicante 1978 (13/13) TPR 3190. But one opponent is listed as 2200, probably unrated.
Alexander Alekhine Moscow 1919–20 (11/11)
Bobby Fischer at the US Championship of 1963/64 (11/11). Ra US=2510 + 800 giving TPR 3310. *
David Janowski Paris 1914 (9/9)
William Lombardy World Junior Chess Championship 11–0 Toronto 1957. {The BCF refused to send a representative in order to save money.}
Michael Hennigan 9/9 World U18 1988. Demetrios Agnos came second with 6.5/9.
Vera Menchik won four consecutive Women's World Chess Championship tournaments with perfect scores, a total of 43 games (8–0 Prague 1931, 12–0 Folkestone 1933, 9–0 Warsaw 1935, 14–0 at Stockholm 1937). I've removed the two games she won by default.
Robert Gwaze 9/9 Board 1 Olympiad for Zimbabwe. He didn't play the last 5 games as he had won the Gold Medal. He played 4 of the games against unrated opposition. He then defected and remained in England for some years. FIDE changed the system for the individual medals to Best TPR. I think they should retain both.

# Hmm. Look at Chessbase and his record is nothing like that. Of course no clocks were used and probably not all the scores of the games remain.

* I used the US Ratings of the day as quoted in my 1964 article in Chess. They would not have been wildly different from FIDE Ratings. Only later did the USCF deliberately inflate the national ratings. Bobby's We was 8, so he would have gained 30 rating points.
Nowadays we rate each game separately.

Thus Bobby seems to maintain the best-ever TPR, although his was achieved before FIDE Ratings existed. So much for inflation.

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