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Individual Calculations December 2017 |
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| Pratley, Ian Total change: -11.20 | |   |
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| CCF WINTER CHESS 2017-18 LONG PLAY OCTOBER 2017 B | London | ENG | 2017-10-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1886 | 1552 | 0.00 | 1 | -0.12 | 20 | -2.40 | |
|  Calvert, D Ian | | | 1886 | ENG | 0.00 | 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) | | | | CCF WINTER CHESS 2017-18 LONG PLAY NOVEMBER 2017 | London | ENG | 2017-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1446 | 1555 | 1.50 | 3 | -0.44 | 20 | -8.80 | |
| | Ito-Aramendia, Alejandro | | | 1528 | ENG | 0.00 | 1 | -0.54 | 20 | -10.80 | |  Boztas, Lana | | | 1429 | ENG | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Elliott, Judah P | | | 1381 | CAN | 1.00 | 1 | 0.27 | 20 | 5.40 | |
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) | | |
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