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Individual Calculations December 2015 |
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| Ralphs, Nigel Total change: -17.40 | |   |
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| Welsh Chess Premier League 2015/16 Round 1 | Various | WLS | 2015-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2003 | 2001 | 1.00 | 1 | 0.50 | 20 | 10.00 | |
|  Roberts, David L | | | 2003 | ENG | 1.00 | 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) | | | | 48th West Wales Championship | Swansea | WLS | 2015-11-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1806 | 2001 | 1.50 | 4 | -1.37 | 20 | -27.40 | |
|  Lutchman Singh, Karanvir | | | 1671 | WLS | 0.50 | 1 | -0.38 | 20 | -7.60 | | | Jones, Ian Robert | | | 1976 | WLS | 0.50 | 1 | -0.03 | 20 | -0.60 | | | Sivarajasingam, Shayanna | | | 1601 * | WLS | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Fathallah, Joe | | | 1975 | WLS | 0.00 | 1 | -0.54 | 20 | -10.80 | | | * 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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