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Individual Calculations April 2015 |
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| Thomas, Ben Total change: -7.60 | |   |
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| Welsh Chess Premier League 2014/15 Rd5 | Various | WLS | 2015-03-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1645 | 1804 | 1.00 | 1 | 0.29 | 40 | 11.60 | |
|  Guha, Chirag | | | 1645 | WLS | 1.00 | 1 | 0.29 | 40 | 11.60 | |
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 Welsh Under-16 Championship | Monmouth | WLS | 2015-03-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1517 | 1804 | 2.00 | 3 | -0.48 | 40 | -19.20 | |
| | Sieduszewski, Mateusz | | | 1404 * | WLS | 1.00 | 1 | 0.08 | 40 | 3.20 | |  Sivarajasingam, Venetia | | | 1503 | WLS | 1.00 | 1 | 0.15 | 40 | 6.00 | | | Guha, Chirag | | | 1645 | WLS | 0.00 | 1 | -0.71 | 40 | -28.40 | | | * 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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