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Individual Calculations December 2017 |
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| Boztas, Lana Total change: 19.80 | |   |
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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 |
| 1237 | 1456 | 1.00 | 1 | 0.22 | 20 | 4.40 | |
|  Sahdev, Varun | | | 1237 | ENG | 1.00 | 1 | 0.22 | 20 | 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) | | | | CCF WINTER CHESS 2017-18 LONG PLAY NOVEMBER 2017 | London | ENG | 2017-11-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1383 | 1429 | 3.00 | 4 | 0.77 | 20 | 15.40 | |
| | Levey, Steve | | | 1431 | ENG | 1.00 | 1 | 0.50 | 20 | 10.00 | | | Pratley, Ian | | | 1555 | ENG | 0.50 | 1 | 0.17 | 20 | 3.40 | |  Selby, Keith | | | 1366 | ENG | 0.50 | 1 | -0.09 | 20 | -1.80 | | | Beukes, Samuel | | | 1180 | ENG | 1.00 | 1 | 0.19 | 20 | 3.80 | |
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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