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Individual Calculations January 2023 |
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| Kozower, Ethan Total change: -46.80 | |   |
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| 53rd annual National Chess Congress - 1800-2199 | Philadelphia, PA | USA | 2022-11-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1639 | 1878 | 2.50 | 4 | -0.66 | 40 | -26.40 | |
|  Schwartz, Jared Ethan | | | 1652 | USA | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Sazci, Bilgen | | | 1753 | TUR | 0.00 | 1 | -0.67 | 40 | -26.80 | |  Field, Rowan Soraya | | | 1534 | USA | 0.50 | 1 | -0.38 | 40 | -15.20 | | | Du, Calvin | | | 1615 | USA | 1.00 | 1 | 0.18 | 40 | 7.20 | |
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) | | | | Marshall Amateur Championship - Jerry Simon Memorial | New York, NY | USA | 2022-12-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1562 | 1889 | 0.50 | 2 | -1.24 | 40 | -49.60 | |
| | Chachere, Theodore | | | 1619 | USA | 0.00 | 1 | -0.83 | 40 | -33.20 | | | Field, Rowan | | | 1504 | USA | 0.50 | 1 | -0.41 | 40 | -16.40 | |
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) | | | | 106th Edward Lasker Memorial - MCC Championship | New York, NY | USA | 2022-12-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1744 | 1889 | 2.00 | 2 | 0.73 | 40 | 29.20 | |
| | Wong, Wyatt | | | 1489 * | USA | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Ray, Sarathi | | | 1999 | USA | 1.00 | 1 | 0.65 | 40 | 26.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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