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Individual Calculations February 2023 |
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| Sperber, Ronald David Total change: -25.80 | |   |
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| 11th annual Boston Chess Congress - U2100 Section | Boston MA | USA | 2023-01-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1509 | 1578 | 0.50 | 3 | -1.29 | 20 | -25.80 | |
|  Cao, Frank Zhongtian | | | 1528 | USA | 0.50 | 1 | -0.07 | 20 | -1.40 | |  Narayanan, Krishna | | | 1524 | USA | 0.00 | 1 | -0.58 | 20 | -11.60 | | | Shangin, Lev | | | 1476 | USA | 0.00 | 1 | -0.64 | 20 | -12.80 | |
Rc - average rating of rated opponents, Ro - rating of a player in a tournament, Rp - rating performance of an unrated player, W - points won in a tournament against rated opponents, N - total number of games against rated opponents, Change - change used for calculation according to formula, K - development coefficient, Kchg - rating change of a player calculated as (K * change) | | |
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