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Individual Calculations October 2017 |
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| Costello, Alexander Total change: 78.40 | |   |
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| 2017 Southern California Open | San Diego, California | USA | 2017-09-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1962 | 2081 | 2.00 | 5 | -1.24 | 40 | -49.60 | |
|  Ghazarian, Kirk | | | 1931 | USA | 0.00 | 1 | -0.70 | 40 | -28.00 | | | Dyberg, Rick | | | 1859 | USA | 1.00 | 1 | 0.22 | 40 | 8.80 | |  McNeill Jr, Gordon | | | 1815 | USA | 1.00 | 1 | 0.18 | 40 | 7.20 | | | Formanek, Edward W | m | | 2081 | USA | 0.00 | 1 | -0.50 | 40 | -20.00 | | | Nguyen, Darian | | | 2123 | USA | 0.00 | 1 | -0.44 | 40 | -17.60 | |
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) | | | | World Youth Chess Championship 2017 U14 Open | Montevideo | URU | 2017-09-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2162 | 2081 | 7.50 | 11 | 3.20 | 40 | 128.00 | |
| | Stetsenko, Ilya | | | 1681 * | ARU | 1.00 | 1 | 0.08 | 40 | 3.20 | | | Nesterov, Arseniy | | | 2380 | RUS | 1.00 | 1 | 0.85 | 40 | 34.00 | | | Koustav, Chatterjee | | | 2214 | IND | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Batsuren, Dambasuren | f | | 2301 | MGL | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Turgut, Aydin | | | 2225 | USA | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Mollo, Jhoan | | | 1868 | BOL | 1.00 | 1 | 0.23 | 40 | 9.20 | | | Filgueiras, Nathan Felipe | | | 2049 | BRA | 1.00 | 1 | 0.46 | 40 | 18.40 | | | Fecker, Noah | | | 2166 | SUI | 0.00 | 1 | -0.38 | 40 | -15.20 | | | Kumar, Nikhil | f | | 2317 | USA | 1.00 | 1 | 0.80 | 40 | 32.00 | | | Soto, Miguel Angel | f | | 2192 | COL | 1.00 | 1 | 0.65 | 40 | 26.00 | | | Teclaf, Pawel | c | | 2394 | POL | 0.50 | 1 | 0.36 | 40 | 14.40 | | | * 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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