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Individual Calculations February 2023 |
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| Zhou, Ivan Total change: 102.60 | |   |
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| 32nd annual North American Open - U2100 | Paradise, Nevada | USA | 2022-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1596 | 1580 | 3.00 | 6 | 0.17 | 36 | 6.12 | |
|  Moshkevich, Elizabeth | | | 1625 | USA | 0.00 | 1 | -0.44 | 36 | -15.84 | |  Ma, Matthew | | | 1180 * | USA | 1.00 | 1 | 0.08 | 36 | 2.88 | | | Li, Michael | | | 1654 | USA | 1.00 | 1 | 0.60 | 36 | 21.60 | | | Tabor, Kai | | | 1928 | USA | 0.00 | 1 | -0.11 | 36 | -3.96 | | | Chyngyz, Sultai | c | | 1548 | KGZ | 0.50 | 1 | -0.04 | 36 | -1.44 | | | Bryan, Bret A | | | 1639 | USA | 0.50 | 1 | 0.08 | 36 | 2.88 | | | * 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) | | | | 2023 New Year Tuesday Night Marathon - 2000 and over Rounds 1-3 | San Francisco, CA | USA | 2023-01-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1818 | 1540 | 1.00 | 2 | 0.65 | 36 | 23.40 | |
| | Walder, Michael | | | 1916 | USA | 0.00 | 1 | -0.09 | 36 | -3.24 | | | Argo, Guy | | | 1720 | USA | 1.00 | 1 | 0.74 | 36 | 26.64 | |
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) | | | | 14th annual Golden State Open - U2100 Section | Concord, CA | USA | 2023-01-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1628 | 1540 | 3.50 | 6 | 1.09 | 36 | 39.24 | |
| | Meiyappan, Kavya | | | 1383 | USA | 1.00 | 1 | 0.29 | 36 | 10.44 | | | Watson, Farid Mark | | | 1895 | USA | 1.00 | 1 | 0.89 | 36 | 32.04 | | | Jin, David | | | 1473 | USA | 0.50 | 1 | -0.09 | 36 | -3.24 | | | Zhou, Greg | | | 1510 | USA | 1.00 | 1 | 0.46 | 36 | 16.56 | | | Nair, Ajitesh | | | 1800 | USA | 0.00 | 1 | -0.18 | 36 | -6.48 | | | Shukla, Kathan | | | 1708 | USA | 0.00 | 1 | -0.28 | 36 | -10.08 | |
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) | | | | 2023 SJCC Winter Championship | Milpitas, CA | USA | 2023-01-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1682 | 1540 | 2.50 | 5 | 0.94 | 36 | 33.84 | |
| | Karthi, Jashith | | | 1696 | USA | 0.00 | 1 | -0.29 | 36 | -10.44 | | | Katz, Stewart | | | 1709 | USA | 1.00 | 1 | 0.72 | 36 | 25.92 | | | Champsi, Imran | | | 1669 | USA | 0.50 | 1 | 0.17 | 36 | 6.12 | | | Patil, Yashas | | | 1691 | USA | 1.00 | 1 | 0.70 | 36 | 25.20 | | | Yao, Hanchi | | | 1643 | USA | 0.00 | 1 | -0.36 | 36 | -12.96 | |
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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