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Individual Calculations September 2009 |
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| Gerzhoy, Leonid Total change: 37.60 | |   |
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| 2nd New York International | New York, NY | USA | 2009-06-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2422 | 2420 | 6.00 | 9 | 1.61 | 10 | 16.10 | |
|  Ostrovskiy, Aleksandr | c | | 2070 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |  Ippolito, Dean J | m | | 2443 | USA | 1.00 | 1 | 0.53 | 10 | 5.30 | | | Esserman, Marc R | | | 2391 | USA | 0.50 | 1 | -0.04 | 10 | -0.40 | | | Shankland, Samuel | m | | 2446 | USA | 0.00 | 1 | -0.46 | 10 | -4.60 | | | Lenderman, Alex | m | | 2434 | USA | 1.00 | 1 | 0.52 | 10 | 5.20 | | | Hracek, Zbyneil | g | | 2604 | CZE | 0.00 | 1 | -0.26 | 10 | -2.60 | | | Krush, Irina | m | wg | 2452 | USA | 1.00 | 1 | 0.54 | 10 | 5.40 | | | Yudasin, Leonid | g | | 2550 | ISR | 0.50 | 1 | 0.18 | 10 | 1.80 | | | Sarkar, Justin | m | | 2410 | USA | 1.00 | 1 | 0.49 | 10 | 4.90 | |
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 |
| 2537 | 2420 | 5.50 | 9 | 2.39 | 10 | 23.90 | |
| | Bareev, Evgeny | g | | 2636 | RUS | 0.50 | 1 | 0.28 | 10 | 2.80 | | | Potkin, Vladimir | g | | 2621 | RUS | 1.00 | 1 | 0.76 | 10 | 7.60 | | | Friedel, Joshua E | g | | 2516 | USA | 0.50 | 1 | 0.13 | 10 | 1.30 | | | Kacheishvili, Giorgi | g | | 2613 | GEO | 0.50 | 1 | 0.25 | 10 | 2.50 | | | Smith, Bryan G | m | | 2474 | USA | 0.00 | 1 | -0.42 | 10 | -4.20 | | | Garcia, Gildardo J | g | | 2401 | COL | 0.50 | 1 | -0.03 | 10 | -0.30 | | | Lapshun, Yury | m | | 2448 | USA | 1.00 | 1 | 0.54 | 10 | 5.40 | | | Becerra, Julio J | g | | 2609 | USA | 1.00 | 1 | 0.75 | 10 | 7.50 | | | Ivanov, Alexander | g | | 2516 | USA | 0.50 | 1 | 0.13 | 10 | 1.30 | |
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) | | | | 2009 Canadian Open | Edmonton, Alberta | CAN | 2009-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2299 | 2409 | 4.50 | 7 | -0.01 | 10 | -0.10 | |
| | Haessel, Dale | f | | 2204 | CAN | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Ni, Hua | g | | 2701 | CHN | 0.00 | 1 | -0.15 | 10 | -1.50 | | | Gentes, Kevin | f | | 2270 | CAN | 1.00 | 1 | 0.31 | 10 | 3.10 | | | Langer, Michael | f | | 2263 | USA | 0.50 | 1 | -0.20 | 10 | -2.00 | | | Melekhina, Alisa | | wm | 2270 | USA | 0.50 | 1 | -0.19 | 10 | -1.90 | | | Mackay, Ian | f | | 2307 | SCO | 0.50 | 1 | -0.14 | 10 | -1.40 | | | Kalisvaart, Peter | | | 2078 | NED | 1.00 | 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) | | | | Continental Absolute Champioship 2009 | Sao Paulo Chess Club/SP | BRA | 2009-07-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2279 | 2409 | 7.00 | 11 | -0.26 | 10 | -2.60 | |
| | Rodrigues, Nei Jorge | | | 2033 | BRA | 1.00 | 1 | 0.09 | 10 | 0.90 | | | Galati, Mario Augusto | | | 2206 | BRA | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Delgado Ramirez, Neuris | g | | 2574 | CUB | 0.00 | 1 | -0.28 | 10 | -2.80 | | | Assumpcao, Roberto | f | | 2234 | BRA | 0.50 | 1 | -0.23 | 10 | -2.30 | | | Calcado, Acyr Rogerio | | | 2201 | BRA | 1.00 | 1 | 0.23 | 10 | 2.30 | | | Leitao, Rafael | g | | 2610 | BRA | 0.00 | 1 | -0.24 | 10 | -2.40 | | | Cominato Neto, Jose Luis | | | 2184 | BRA | 0.50 | 1 | -0.28 | 10 | -2.80 | | | Guimaraes, Diogo Duarte | | | 2232 | BRA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Espinoza Palomino, Willyam | c | | 2272 | PER | 1.00 | 1 | 0.32 | 10 | 3.20 | | | Castano, Duvan Martin | | | 2337 | COL | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Madeira, Wagner Martins | | | 2184 | BRA | 0.50 | 1 | -0.28 | 10 | -2.80 | |
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) | | | | 2009 Canadian Zonal Ch | Guelph, Ontario | CAN | 2009-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2275 | 2409 | 6.00 | 9 | 0.03 | 10 | 0.30 | |
| | Calugar, Arthur | | | 2072 | CAN | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Mackinnon, Keith | | | 2148 | CAN | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Sapozhnikov, Roman | | | 2176 | CAN | 0.50 | 1 | -0.29 | 10 | -2.90 | | | Samsonkin, Artiom | m | | 2403 | CAN | 0.50 | 1 | -0.01 | 10 | -0.10 | | | Jiang, Louie | | | 2250 | CAN | 0.50 | 1 | -0.21 | 10 | -2.10 | | | Hebert, Jean | m | | 2399 | CAN | 0.00 | 1 | -0.51 | 10 | -5.10 | | | Haessel, Dale | f | | 2204 | CAN | 1.00 | 1 | 0.24 | 10 | 2.40 | | | Kaminski, Victor | | | 2268 | CAN | 1.00 | 1 | 0.31 | 10 | 3.10 | | | Bluvshtein, Mark | g | | 2558 | CAN | 0.50 | 1 | 0.20 | 10 | 2.00 | |
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) | | |
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