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Individual Calculations May 2017 |
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| Bonutto, Stephen Total change: 20.00 | |   |
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| Welsh Chess Premier League 2016/17 Round 4 | Merthyr | WLS | 2017-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1763 | 1474 | 0.00 | 1 | -0.16 | 20 | -3.20 | |
|  Jones, Martin C | | | 1763 | WLS | 0.00 | 1 | -0.16 | 20 | -3.20 | |
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) | | | | 2017 Tom Weston Memorial | Cardiff | WLS | 2017-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1522 | 1474 | 2.50 | 3 | 1.16 | 20 | 23.20 | |
| | Jaberansari, Daniel | | | 1405 | WLS | 1.00 | 1 | 0.40 | 20 | 8.00 | |  Williams, Stephen | | | 1714 | WLS | 0.50 | 1 | 0.30 | 20 | 6.00 | | | Cox, John | | | 1448 | WLS | 1.00 | 1 | 0.46 | 20 | 9.20 | |
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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