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Individual Calculations May 2017 |
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| Roebuck, Derek Total change: 9.60 | |   |
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| Southend Easter Bank Holiday Congress OPEN | London | ENG | 2017-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1949 | 1661 | 3.00 | 7 | 1.79 | 20 | 35.80 | |
|  Verma, Aditya | | | 2061 * | ENG | 0.00 | 1 | -0.08 | 20 | -1.60 | |  Kirk, Jason | | | 1960 | FRA | 0.50 | 1 | 0.35 | 20 | 7.00 | | | Islam, Mohammed | | | 1755 | BAN | 1.00 | 1 | 0.63 | 20 | 12.60 | | | Johansson, Toni | | | 2061 * | SWE | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Spanton, Tim R | | | 1927 | ENG | 1.00 | 1 | 0.82 | 20 | 16.40 | | | Myall, Ivan J | | | 2022 | ENG | 0.00 | 1 | -0.10 | 20 | -2.00 | | | Matthews, Adrian M S | | | 1858 | ENG | 0.50 | 1 | 0.25 | 20 | 5.00 | | | * 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) | | | | GAMMA Reykjavik Open 2017 | Reykjavik | ISL | 2017-04-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1674 | 1661 | 3.00 | 9 | -1.31 | 20 | -26.20 | |
| | Della Pietra, Andrea | | | 2061 * | ITA | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Magnusson, Magnus | | | 1978 | ISL | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Haile, Batel Goitom | | | 1261 * | ISL | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Eiriksson, Sigurdur | | | 1928 | ISL | 0.00 | 1 | -0.18 | 20 | -3.60 | | | Boron, Anthony | | | 1865 | CAN | 0.50 | 1 | 0.26 | 20 | 5.20 | | | Kristofersson, Sindri Snaer | | | 1261 * | ISL | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Nielsen, Jon I Horni | | | 1454 | FAI | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Sigurvaldason, Hjalmar | | | 1441 | ISL | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Davidsson, Oskar Vikingur | | | 1818 | ISL | 0.00 | 1 | -0.29 | 20 | -5.80 | | | * 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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