Cédric Beaume

Applied Mathematician

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Historical measure of my tactical ability using chess.com's puzzle rating. The data is gathered every month and consists of the maximum of the end-of-day rating (red) and of the average of the end-of-day rating (blue). The vertical solid lines indicate the end of a calendar year. Progression is best shown using a logarithmic scale for time, where the value 1 is associated with the first month of the experiment (January 2022) and is incremented by 1 after every month. The average of the end-of-day rating is well-approximated by the function 1771 + 355 ln(Time) shown in green. I have reached an average chess.com puzzle rating of 3000 in August 2024 and, assuming similar progress, will reach 3200 in August 2026, 3500 in November 2032 and 4000 in May 2066. Wish me luck!

Blue: my provisional ECF rating. Gray: confidence interval calculated in the following fashion. The upper (resp. lower) bound correspond to all remaining games being wins (resp. losses) against the typical strong (resp. weak) opponent. The typical strong (resp. weak) opponent is defined as having ECF rating equal to the average ECF rating in my team's division plus (resp. minus) one standard deviation. For games 0 to 5, my team's league was the Leeds League Division III (strong: 1541; weak: 1140) while, for games 6 to 10, it was the Leeds League Division II statistics (strong: 1704; weak: 1477). The titles indicated by the colored rating bands are the titles of the English Chess Federation while the percentiles indicated on the right derive from a post of the Yorkshire Chess News regarding the ECF rating list of 1 August 2023. I obtained my first established ECF rating of 1663 on 2 December 2023.