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Individual Calculations May 2018 |
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| Zeidler, Sven P. Total change: 6.80 | |   |
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| 2018 Welsh Championships | Cardiff | WLS | 2018-03-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2031 | 2153 | 5.00 | 7 | 0.35 | 20 | 7.00 | |
|  Ralphs, Nigel | | | 1989 | WLS | 0.50 | 1 | -0.22 | 20 | -4.40 | |  Fathallah, Joe | | | 1977 | WLS | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Heaven, Pete | | | 2022 | WLS | 0.50 | 1 | -0.18 | 20 | -3.60 | | | Musson, Adam J | | | 2050 | WLS | 1.00 | 1 | 0.36 | 20 | 7.20 | | | Rayner, Francis | | | 2073 | WLS | 1.00 | 1 | 0.39 | 20 | 7.80 | | | Jameson, David | | | 2033 | WLS | 0.50 | 1 | -0.16 | 20 | -3.20 | | | Brown, Thomas | | | 2074 | WLS | 0.50 | 1 | -0.11 | 20 | -2.20 | |
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) | | | | Welsh Chess Premier League 2017/18 Round 4 | Neath | WLS | 2018-04-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2170 | 2178 | 0.50 | 1 | -0.01 | 20 | -0.20 | |
| | Phillips, Roy | f | | 2170 | MRI | 0.50 | 1 | -0.01 | 20 | -0.20 | |
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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