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Individual Calculations September 2017 |
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| Petkov, Petko Total change: 24.00 | |   |
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| 104th British Championships Under 16 | Llandudno | ENG | 2017-07-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1711 | 1569 | 2.50 | 7 | 0.27 | 40 | 10.80 | |
|  Jain, Gautam R | | | 1812 | ENG | 0.50 | 1 | 0.30 | 40 | 12.00 | |  Modi, Kishan J | | | 1725 | ENG | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Rajesh, Gorak | | | 1763 | ENG | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Smith, Callum | | | 1837 | SCO | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Balouka-Myers, Gabriel | | | 1686 | ENG | 0.00 | 1 | -0.34 | 40 | -13.60 | | | Balouka-Myers, Reuben | | | 1520 | ENG | 1.00 | 1 | 0.43 | 40 | 17.20 | | | Jina, Asha | | | 1632 | ENG | 0.50 | 1 | 0.09 | 40 | 3.60 | |
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) | | | | 104th British Championships Under 1750 | Llandudno | ENG | 2017-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1627 | 1569 | 2.00 | 4 | 0.33 | 40 | 13.20 | |
| | Ashworth, Robert M | | | 1718 | ENG | 0.50 | 1 | 0.20 | 40 | 8.00 | | | Collicott, Peter J | | | 1741 | ENG | 0.50 | 1 | 0.23 | 40 | 9.20 | | | O`gorman, Brendan | | | 1702 | ENG | 0.50 | 1 | 0.18 | 40 | 7.20 | | | Chung, Ethan | | | 1348 | WLS | 0.50 | 1 | -0.28 | 40 | -11.20 | |
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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