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Individual Calculations October 2015 |
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| De Guzman, Ricardo Total change: -5.00 | |   |
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| 2015 CalChess State Championship | Burlingame, California | USA | 2015-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2282 | 2374 | 1.00 | 3 | -0.79 | 10 | -7.90 | |
|  Kraai, Jesse | g | | 2507 | USA | 0.00 | 1 | -0.32 | 10 | -3.20 | |  Stearman, Josiah P | | | 2026 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Aleskerov, Faik | | | 2314 | AZE | 0.00 | 1 | -0.58 | 10 | -5.80 | |
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) | | | | 2015 Bay Area Chess IM John Donaldson Championship | Milpitas, California | USA | 2015-09-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1999 | 2374 | 3.00 | 3 | 0.29 | 10 | 2.90 | |
| | Wei, Jeffrey | | | 1974 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Ke, Ivan | | | 1974 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Virtanen, Teemu | | | 2050 | FIN | 1.00 | 1 | 0.13 | 10 | 1.30 | | | * 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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