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Individual Calculations February 2023 |
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| Gunasekara, Aritha Chanthula Abe Total change: 12.80 | |   |
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| Ethugalpura Open International Rating Chess Championships 2022 | Kurunegala | SRI | 2022-12-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1262 | 1079 | 1.50 | 5 | 0.14 | 40 | 5.60 | |
|  Rathnayake, R M M P B | | | 1129 | SRI | 0.00 | 1 | -0.43 | 40 | -17.20 | | | Senevirathne, D C B K | | | 1374 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | |  Bandara, K M W G Lahiru | | | 1198 | SRI | 0.50 | 1 | 0.16 | 40 | 6.40 | | | Janarthanan, Kethushan | | | 1256 | SRI | 1.00 | 1 | 0.73 | 40 | 29.20 | | | Yapabandara, G G P D | | | 1355 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | |
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) | | | | 2023 Australian Minor | Perth | AUS | 2023-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1369 | 1079 | 0.50 | 2 | 0.17 | 40 | 6.80 | |
| | Knight, Charles | | | 1280 | AUS | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Gupta, Aarnav | | | 1458 | AUS | 0.50 | 1 | 0.41 | 40 | 16.40 | |
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) | | | | Kaluthara International Chess Festival 2023 | Kaluthara | SRI | 2023-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1468 | 1079 | 0.50 | 4 | 0.01 | 40 | 0.40 | |
| | De Silva, Osheen | | | 1763 | SRI | 0.00 | 1 | -0.01 | 40 | -0.40 | | | Pradeep, Nishantha | | | 1356 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Thilakaratne, Hm Sithuka Ranmira | | | 1314 | SRI | 0.50 | 1 | 0.29 | 40 | 11.60 | | | Ranasinghe, R A Malindu Bhathiya | | | 1438 | SRI | 0.00 | 1 | -0.10 | 40 | -4.00 | |
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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