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Individual Calculations February 2023 |
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| Shangin, Lev Total change: 9.60 | |   |
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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 |
| 1578 | 1476 | 1.00 | 1 | 0.64 | 40 | 25.60 | |
|  Sperber, Ronald David | | | 1578 | USA | 1.00 | 1 | 0.64 | 40 | 25.60 | |
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) | | | | 55th annual Liberty Bell Open - U2100 | Philadelphia, PA | USA | 2023-01-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1494 | 1476 | 1.50 | 4 | -0.40 | 40 | -16.00 | |
|  Johnson, Jeffery W | | | 1504 | USA | 0.50 | 1 | 0.04 | 40 | 1.60 | | | Goodrich, Elliott | | | 1529 | USA | 0.50 | 1 | 0.07 | 40 | 2.80 | | | Saxena, Vihaan | | | 1372 | USA | 0.50 | 1 | -0.14 | 40 | -5.60 | | | Gartenlaub, Corin | | | 1570 | USA | 0.00 | 1 | -0.37 | 40 | -14.80 | |
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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