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Individual Calculations March 2015 |
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| Jones, Richard S. Total change: -6.80 | |   |
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| 2015 Welsh Winter Open | Penarth | WLS | 2015-01-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2057 | 2414 | 2.50 | 4 | -1.05 | 10 | -10.50 | |
|  Tomboline, David | | | 2014 * | ENG | 1.00 | 1 | 0.08 | 10 | 0.80 | |  Ehsandar, Peter | | | 2014 * | WLS | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Braun, Walter | f | | 2186 | AUT | 0.00 | 1 | -0.79 | 10 | -7.90 | | | Whitehead, Mark A | | | 2014 * | ENG | 0.50 | 1 | -0.42 | 10 | -4.20 | | | * 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) | | | | 4NCL 2014-15 Rounds 5-6 | Various | ENG | 2015-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2166 | 2405 | 1.50 | 2 | -0.10 | 10 | -1.00 | |
| | Graham, David B | | | 2136 | ENG | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Talsma, Paul | | | 2196 | NED | 0.50 | 1 | -0.27 | 10 | -2.70 | |
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) | | | | 44th Dyfed Chess Congress | Goodwick | WLS | 2015-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2137 | 2405 | 4.50 | 5 | 0.47 | 10 | 4.70 | |
| | Knight, Colin B | | | 2005 * | ENG | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Miles, Richard | | | 2006 | WLS | 1.00 | 1 | 0.08 | 10 | 0.80 | | | Byway, Paul V | f | | 2143 | ENG | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Zeidler, Sven P. | f | | 2228 | WLS | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Williams, A. Howard | f | | 2305 | WLS | 0.50 | 1 | -0.14 | 10 | -1.40 | | | * 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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