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Individual Calculations September 2009 |
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| Kudrin, Sergey Total change: -5.00 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2355 | 2563 | 4.50 | 7 | -0.79 | 10 | -7.90 | |
|  Getz, Alec | f | | 2229 | USA | 0.50 | 1 | -0.38 | 10 | -3.80 | | | Sorkin, Igor | | | 2345 | ISR | 0.50 | 1 | -0.28 | 10 | -2.80 | |  Maltese, Adam S | | | 2222 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Stopa, Jacek | m | | 2471 | POL | 0.00 | 1 | -0.63 | 10 | -6.30 | | | Molner, Mackenzie | | | 2384 | USA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Milman, Lev | m | | 2462 | USA | 0.50 | 1 | -0.14 | 10 | -1.40 | | | Bonin, Jay | m | | 2369 | USA | 1.00 | 1 | 0.25 | 10 | 2.50 | |
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) | | | | 37th Annual World Open - Open Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2409 | 2563 | 4.50 | 6 | 0.31 | 10 | 3.10 | |
| | Homa, Seth | | | 2266 | USA | 0.50 | 1 | -0.35 | 10 | -3.50 | | | Naroditsky, Daniel | f | | 2335 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Gurevich, Dmitry | g | | 2494 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Hansen, Eric | f | | 2398 | CAN | 1.00 | 1 | 0.28 | 10 | 2.80 | | | Kraai, Jesse | g | | 2488 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Stopa, Jacek | m | | 2471 | POL | 1.00 | 1 | 0.37 | 10 | 3.70 | |
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) | | | | Continental Absolute Champioship 2009 | Sao Paulo Chess Club/SP | BRA | 2009-07-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2360 | 2578 | 7.50 | 11 | -0.95 | 10 | -9.50 | |
| | Palozi, Paulo Ricardo | | | 2178 * | BRA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Viana Da Costa, Fernando | | | 2284 | BRA | 0.50 | 1 | -0.35 | 10 | -3.50 | | | Gonzalez, Bolivar Ribeiro | f | | 2292 | BRA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Uribe, Mauricio | m | | 2413 | COL | 0.50 | 1 | -0.22 | 10 | -2.20 | | | Toth, Christian Endre | m | | 2357 | BRA | 0.50 | 1 | -0.28 | 10 | -2.80 | | | Garcia, Gildardo | g | | 2390 | COL | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Di Berardino, Diego Rafael | m | | 2453 | BRA | 0.00 | 1 | -0.67 | 10 | -6.70 | | | Brito, Luismar | f | | 2351 | BRA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Espinosa Flores, Rafael Emilio | m | | 2401 | MEX | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Barrientos, Sergio E. | m | | 2474 | COL | 0.00 | 1 | -0.64 | 10 | -6.40 | | | Cornejo, Max | f | | 2371 | PER | 1.00 | 1 | 0.23 | 10 | 2.30 | | | * 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) | | | | 110th Annual US Open | Indianapolis, Indiana | USA | 2009-08-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2372 | 2578 | 6.50 | 8 | 0.54 | 10 | 5.40 | |
| | Chiang, Michael | | | 2178 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Huang, Vincent | | | 2178 * | USA | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Rensch, Daniel M | f | | 2395 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Gurevich, Dmitry | g | | 2485 | USA | 0.50 | 1 | -0.13 | 10 | -1.30 | | | Antal, Gergely | m | | 2479 | HUN | 1.00 | 1 | 0.36 | 10 | 3.60 | | | Burnett, Ronald | m | | 2368 | USA | 0.50 | 1 | -0.27 | 10 | -2.70 | | | Mulyar, Michael A | m | | 2390 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Lenderman, Alex | m | | 2504 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | | | * 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) | | | | 39th Annual Continental Open | Sturbridge, Massachusetts | USA | 2009-08-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2355 | 2578 | 5.00 | 6 | 0.39 | 10 | 3.90 | |
| | Curdo, John A | f | | 2255 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Cherniack, Alex | | | 2230 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Zlotnikov, Mikhail | m | | 2308 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Sarkar, Justin | m | | 2388 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | | | Esserman, Marc R | | | 2394 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Yudasin, Leonid G | g | | 2554 | ISR | 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) | | |
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