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Individual Calculations March 2010 |
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| Ostrovskiy, Aleksandr Total change: 46.95 | |   |
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| Edward Lasker Memorial and 93rd Annual Marshall Chess Club Championship | New York, New York | USA | 2009-12-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2314 | 2147 | 3.50 | 6 | 1.56 | 15 | 23.40 | |
|  Kudrin, Sergey | g | | 2547 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | |  Farber, Nelson M | | | 1979 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Margiotta, Jason J | | | 1992 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Panchanathan, Magesh | g | | 2541 | IND | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Sarkar, Justin | m | | 2374 | USA | 1.00 | 1 | 0.79 | 15 | 11.85 | | | Krush, Irina | m | wg | 2451 | USA | 0.50 | 1 | 0.36 | 15 | 5.40 | | | * 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) | | | | 5th Annual Empire State Open | Saratoga Springs, New York | USA | 2009-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2231 | 2147 | 1.00 | 3 | -0.17 | 15 | -2.55 | |
| | Nikolayev, Igor A | f | | 2330 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Aaron, Deepak | | | 2142 | USA | 0.00 | 1 | -0.51 | 15 | -7.65 | | | Taylor, Steven A | | | 2221 | USA | 1.00 | 1 | 0.60 | 15 | 9.00 | |
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) | | | | 2010 Happy New Year Open | New york, New York | USA | 2010-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2426 | 2158 | 2.00 | 3 | 1.43 | 15 | 21.45 | |
| | Kudrin, Sergey | g | | 2558 * | USA | 1.00 | 1 | 0.92 | 15 | 13.80 | | | Korley, Kassa | | | 2281 | USA | 1.00 | 1 | 0.67 | 15 | 10.05 | | | Lapshun, Yury | m | | 2440 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | * 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) | | | | Bermuda International Open | Hamilton | BER | 2010-02-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2010 | 2158 | 3.00 | 4 | 0.31 | 15 | 4.65 | |
| | , Ashby | | | 1758 * | BER | 1.00 | 1 | 0.08 | 15 | 1.20 | | | , Lill | c | | 1890 | BER | 1.00 | 1 | 0.17 | 15 | 2.55 | | | , Charbonneau | g | | 2509 | CAN | 0.00 | 1 | -0.11 | 15 | -1.65 | | | , Cooper | | | 1881 | BER | 1.00 | 1 | 0.17 | 15 | 2.55 | | | * 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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