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Individual Calculations September 2015 |
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| Cummings, David H. Total change: -3.80 | |   |
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| 2015 Championnats individuels d'echecs de la Francophonie - Open | Montreal | CAN | 2015-07-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2186 | 2327 | 5.50 | 9 | -0.46 | 10 | -4.60 | |
|  Ming, Wenyang | | | 1927 * | CAN | 1.00 | 1 | 0.08 | 10 | 0.80 | |  Turcotte, Jonathan | | | 1999 | CAN | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Cloutier, Mathieu | | | 1972 | CAN | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Hansen, Eric | g | | 2583 | CAN | 0.50 | 1 | 0.31 | 10 | 3.10 | | | Dlugy, Maxim | g | | 2516 | USA | 0.50 | 1 | 0.25 | 10 | 2.50 | | | Chiku-Ratte, Olivier-Kenta | | | 2195 | CAN | 0.00 | 1 | -0.68 | 10 | -6.80 | | | Shi, Diwen | c | | 2153 | CAN | 0.50 | 1 | -0.23 | 10 | -2.30 | | | Drolet, Stephane | | | 2120 | CAN | 1.00 | 1 | 0.23 | 10 | 2.30 | | | Humphreys, Michael | f | | 2207 | CAN | 0.00 | 1 | -0.66 | 10 | -6.60 | | | * 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) | | | | 2015 Canadian Seniors 50 plus | Kitchener | CAN | 2015-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2025 | 2327 | 4.50 | 6 | -0.54 | 10 | -5.40 | |
| | Zybura, Andre | | | 1972 | CAN | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Barron, Michael | f | | 2192 | CAN | 0.00 | 1 | -0.68 | 10 | -6.80 | | | Drkulec, Vladimir | | | 1927 * | CAN | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Dougherty, Michael | f | | 2123 | CAN | 0.50 | 1 | -0.26 | 10 | -2.60 | | | Cova, Ramon J | | | 2010 | CAN | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Chernik, Dmitry | | | 1927 * | CAN | 1.00 | 1 | 0.08 | 10 | 0.80 | | | * 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) | | | | PANAMERICAN SENIOR CHESS CHAMPIONSHIP Over 50 | Porlamar | VEN | 2015-08-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2022 | 2311 | 8.00 | 9 | 0.62 | 10 | 6.20 | |
| | Acuna Monteverde, Pablo | | | 1911 * | VEN | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Madeira, Wagner Martins | f | | 2172 | BRA | 1.00 | 1 | 0.31 | 10 | 3.10 | | | Barron, Michael | f | | 2208 | CAN | 1.00 | 1 | 0.36 | 10 | 3.60 | | | Ostos, Julio Eduardo | m | | 2242 | VEN | 0.00 | 1 | -0.60 | 10 | -6.00 | | | Gauna Rojas, Jose Gregorio | | | 1964 | VEN | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Amaro Garcia, Juan | | | 1911 * | VEN | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Quijada, Leonardo | | | 1968 | CHI | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Varela, Jesus | | | 1911 * | VEN | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Quiroga, Walter Gonzalo | | | 1911 * | BOL | 1.00 | 1 | 0.08 | 10 | 0.80 | | | * 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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