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Individual Calculations September 2017 |
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| Collicott, Peter J Total change: -63.60 | |   |
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| 104th British Championships Under 1900 | Llandudno | ENG | 2017-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1588 | 1741 | 2.00 | 5 | -1.47 | 40 | -58.80 | |
|  Lloyd, Stephen M | | | 1485 | ENG | 0.00 | 1 | -0.81 | 40 | -32.40 | |  Andrews, Norman G | | | 1612 | ENG | 0.50 | 1 | -0.17 | 40 | -6.80 | | | Coleman, Frederick | | | 1516 | ENG | 0.50 | 1 | -0.28 | 40 | -11.20 | | | Grice, Alec | | | 1667 | ENG | 0.50 | 1 | -0.10 | 40 | -4.00 | | | Fowler, David J | | | 1659 | ENG | 0.50 | 1 | -0.11 | 40 | -4.40 | |
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) | | | | 104th British Championships Under 1750 | Llandudno | ENG | 2017-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1587 | 1741 | 2.00 | 3 | -0.12 | 40 | -4.80 | |
| | Lewis, Timothy | | | 1577 | ENG | 0.50 | 1 | -0.22 | 40 | -8.80 | | | Petkov, Petko | | | 1569 | WLS | 0.50 | 1 | -0.23 | 40 | -9.20 | | | Karia, Kamlesh | | | 1614 | ENG | 1.00 | 1 | 0.33 | 40 | 13.20 | |
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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