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Individual Calculations April 2009 |
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| Kudrin, Sergey Total change: 1.80 | |   |
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| 35th Annual Eastern Open | Washington DC | USA | 2008-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2360 | 2553 | 6.00 | 8 | 0.12 | 10 | 1.20 | |
|  Panico, Nick F | | | 2203 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |  Santarius, Erik F | | | 2213 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Figler, Ilye | f | | 2322 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Smith, Bryan G | m | | 2406 | USA | 0.50 | 1 | -0.20 | 10 | -2.00 | | | Andrews, Todd D | f | | 2331 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Yermolinsky, Alex | g | | 2537 | USA | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Ludwig, Daniel | | | 2400 | USA | 0.50 | 1 | -0.20 | 10 | -2.00 | | | Robson, Ray | m | | 2466 | USA | 0.50 | 1 | -0.12 | 10 | -1.20 | |
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) | | | | 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2347 | 2561 | 5.00 | 7 | -0.27 | 10 | -2.70 | |
| | Terrie, Henry L | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Rosenberg, Evan S | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Zenyuk, Iryna | c | wm | 2237 | USA | 0.50 | 1 | -0.37 | 10 | -3.70 | | | Esserman, Marc R | | | 2345 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Hess, Robert L | m | | 2483 | USA | 1.00 | 1 | 0.39 | 10 | 3.90 | | | Gareev, Timur | g | | 2581 | UZB | 0.00 | 1 | -0.47 | 10 | -4.70 | | | Bonin, Jay | m | | 2361 | USA | 0.50 | 1 | -0.26 | 10 | -2.60 | |
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) | | | | Land of the Sky XXII | Ashville, North Carolina | USA | 2009-01-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2345 | 2561 | 3.00 | 4 | -0.03 | 10 | -0.30 | |
| | Harris, Neal D | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Bereolos, Peter | f | | 2326 | USA | 0.50 | 1 | -0.29 | 10 | -2.90 | | | Chumachenko, Andre | f | | 2300 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Ivanov, Alexander | g | | 2541 | USA | 0.50 | 1 | -0.03 | 10 | -0.30 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2211 | 2561 | 4.00 | 4 | 0.44 | 10 | 4.40 | |
| | Harris, Ian | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Lopez, Felix G | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Ventura, Christoph | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Meredith, Matthew | | | 2211 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |
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) | | | | 18th Annual Eastern Class Championships | Sturbridge, Massachusetts | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2405 | 2561 | 2.00 | 3 | -0.08 | 10 | -0.80 | |
| | Esserman, Marc R | | | 2345 | USA | 0.50 | 1 | -0.28 | 10 | -2.80 | | | Kacheishvili, Giorgi | g | | 2590 | GEO | 0.50 | 1 | 0.04 | 10 | 0.40 | | | Mac Intyre, Paul | f | | 2281 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | |
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) | | |
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