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Individual Calculations February 2023 |
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| Herath, H M D L Total change: 28.40 | |   |
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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 |
| 1205 | 1209 | 1.50 | 3 | -0.05 | 40 | -2.00 | |
|  Tilakaratne, R Y N | | | 1070 | SRI | 1.00 | 1 | 0.31 | 40 | 12.40 | | | Kulathilake, S M M P | | | 1461 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | |  Amarathunga, H G K G | | | 1085 | SRI | 0.50 | 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) | | | | Kandy Open International Rating Chess Championships 2022 | Kandy | SRI | 2022-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1370 | 1209 | 2.50 | 5 | 0.76 | 40 | 30.40 | |
| | Wiratunga, Jenith | | | 1740 | SRI | 0.00 | 1 | -0.03 | 40 | -1.20 | | | Mendis, B D S | | | 1493 | SRI | 0.50 | 1 | 0.34 | 40 | 13.60 | | | Abeysinghe, H M H Janandani | | | 1490 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Dinujaya, P D Kavishka | | | 1027 | SRI | 1.00 | 1 | 0.26 | 40 | 10.40 | | | Piyathilaka, Oshadhi Ruwanya | | | 1099 | SRI | 1.00 | 1 | 0.35 | 40 | 14.00 | |
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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