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Individual Calculations May 2015 |
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| Villiers, Thomas Total change: -6.20 | |   |
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| 59th Southend Chess Congress | Southend-on-Sea | ENG | 2015-04-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2000 | 2089 | 1.50 | 4 | -0.89 | 20 | -17.80 | |
|  Walton, Alan J | c | | 2198 | ENG | 0.50 | 1 | 0.15 | 20 | 3.00 | |  Wallis, Ian J | | | 1968 | ENG | 0.00 | 1 | -0.66 | 20 | -13.20 | | | Wilcox, Keith A | | | 1745 | ENG | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Scott, Gordon W | | | 2090 | ENG | 0.00 | 1 | -0.50 | 20 | -10.00 | |
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) | | | | Hampstead Under 2200 Congress Apr 18 | London | ENG | 2015-04-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1891 | 2089 | 3.00 | 4 | 0.11 | 20 | 2.20 | |
| | Sloan, Cecil | | | 1689 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Miu, Marinel | | | 1760 | ROU | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Peiris, T G M | | | 2091 | SRI | 0.00 | 1 | -0.50 | 20 | -10.00 | | | Iyengar, Ilya | | | 2025 | ENG | 1.00 | 1 | 0.41 | 20 | 8.20 | | | * 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) | | | | Central London Chess Congress (Open Section) | London | ENG | 2015-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2010 | 2089 | 3.50 | 5 | 0.47 | 20 | 9.40 | |
| | Prior, Stephen C V | | | 1996 | ENG | 0.50 | 1 | -0.13 | 20 | -2.60 | | | Simpson, Ben | | | 1863 | ENG | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Gaudeau, Valentin | | | 2048 | FRA | 1.00 | 1 | 0.44 | 20 | 8.80 | | | Altschuler, Jason | | | 2089 | USA | 0.00 | 1 | -0.50 | 20 | -10.00 | | | Johansson, Toni | | | 2055 | SWE | 1.00 | 1 | 0.45 | 20 | 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) | | |
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