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Individual Calculations May 2023 |
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| Roebuck, Derek J Total change: 2.00 | |   |
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| 2023 Perth Club Championship Rounds 1-3 | Perth | AUS | 2023-04-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1589 | 1560 | 1.50 | 3 | 0.10 | 20 | 2.00 | |
|  Markou, Victor | | | 1257 | AUS | 1.00 | 1 | 0.14 | 20 | 2.80 | |  Maris, Rob | | | 1887 | AUS | 0.50 | 1 | 0.37 | 20 | 7.40 | | | Clarke, Daniel | | | 1624 | AUS | 0.00 | 1 | -0.41 | 20 | -8.20 | |
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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