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In the formula above E is the ECF rating (not Elo) and F is the FIDE rating. The ECF grading system was recalibrated in 2009. Various other conversion formulae have been used, but usually relate to the forerunner. This grades some games outside Federation matches where opponents lack an ECF grade. It is designed to give a best estimate conversion.
A chess rating system is a system used in chess to estimate the strength of a player, based on their performance versus other players. They are used by organizations such as FIDE, the US Chess Federation (USCF or US Chess), International Correspondence Chess Federation, and the English Chess Federation. Most of the systems are used to ...
Chess is played all over the world. The dominant international governing body of chess is FIDE, which confers titles and conducts world championship tournaments. [1] The first Official World Championship was held in 1886, and there has always been at least one world champion since then. [2]
Due to the difficulty of computing performance rating in this manner, however, the linear method and FIDE method for calculating performance rating are in much more widespread use. With these simpler methods, only the average rating (abbreviated as Ra) factors into the calculation instead of the rating of each individual opponent.
The English Chess Federation awards the title of National Master to players who achieve an ECF rating of 2200, standardplay. The player must maintain an average listed rating at, or above, the minimum rating for a period of 12 months, with a total game count of 30 games or more in the 12-month qualifying period.
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Chess players ordered by peak FIDE rating in 1980s Country Player Peak rating in 1980s Achieved 1 Garry Kasparov: 2775 1989-01 2 Anatoly Karpov: 2755 1989-07 3 Mikhail Tal: 2705 1980-01 4 Viktor Korchnoi: 2695 1980-01 5 Jan Timman: 2675 1988-01 6 Nigel Short: 2665 1988-07 7 Artur Yusupov: 2660 1986-07 Vasyl Ivanchuk: 2660 1989-07 9 Lajos ...
With the exception of the knight, each piece is abbreviated as the first letter of its name: K for king, Q for queen, R for rook, B for bishop, and P for pawn.As knight begins with the same letter as king, it is abbreviated as either N, Kt or KT, the first being the modern convention.