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Individual Calculations May 2015 |
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| Waterfield, John W Total change: -31.20 | |   |
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| Welsh Chess Premier League 2014/15 Rd6 | Various | WLS | 2015-04-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 1898 | 0.50 | 1 | 0.12 | 20 | 2.40 | |
|  Jones, Ian Robert | | | 1982 | WLS | 0.50 | 1 | 0.12 | 20 | 2.40 | |
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) | | | | Bristol Spring Congress FIDE Open | Bristol | ENG | 2015-04-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1979 | 1898 | 0.00 | 4 | -1.68 | 20 | -33.60 | |
|  Beaumont, Chris R | m | | 2292 | ENG | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Harris, Michael T | | | 1801 | ENG | 0.00 | 1 | -0.63 | 20 | -12.60 | | | Wandowicz, Kajetan | | | 1758 | POL | 0.00 | 1 | -0.69 | 20 | -13.80 | | | Bridge, Neil A | | | 2063 | ENG | 0.00 | 1 | -0.28 | 20 | -5.60 | |
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) | | |
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