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Individual Calculations October 2019 |
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| Perera, Thilina Total change: -12.20 | |   |
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| Sri Lanka University Games Chess Championship 2019 - Men | Matara | SRI | 2019-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1389 | 1446 | 1.50 | 2 | 0.37 | 20 | 7.40 | |
|  Yaparathne , Y M L I K | | | 1212 | SRI | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Ranasinghe, P M | | | 1566 | SRI | 0.50 | 1 | 0.16 | 20 | 3.20 | |
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) | | | | 10th Buddhi International Rating Chess Championship 2019 | Gampaha | SRI | 2019-09-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1172 | 1446 | 1.50 | 3 | -0.98 | 20 | -19.60 | |
| | Dassanayaka, D M S P | | | 1114 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | |  Bhavanan, J | | | 1191 | SRI | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Tharanga, B Nalin | | | 1211 | SRI | 0.00 | 1 | -0.79 | 20 | -15.80 | |
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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