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Individual Calculations August 2023 |
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| Kaumina, M Yashika Total change: 20.60 | |   |
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| Sri Lanka Open Chess Championship 2023 | Colombo | SRI | 2023-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1354 | 1278 | 1.50 | 4 | -0.21 | 20 | -4.20 | |
|  Gamage, Ovin Vidmal | | | 1568 | SRI | 0.00 | 1 | -0.16 | 20 | -3.20 | |  Weerakoon, D D P | | | 1649 | SRI | 0.00 | 1 | -0.10 | 20 | -2.00 | | | Tharanga, R A R | | | 1023 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Samarasinghe, Amiru Visal | | | 1175 | SRI | 0.50 | 1 | -0.14 | 20 | -2.80 | |
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) | | | | Sri Lanka National Team Chess Championship 2023 | Colombo | SRI | 2023-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1356 | 1263 | 3.50 | 5 | 1.24 | 20 | 24.80 | |
| | Randil, Lakshitha | | | 1915 | SRI | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Basnayake, B M Thesandu Aken | | | 1474 | SRI | 0.50 | 1 | 0.27 | 20 | 5.40 | | | Ramanayake, M D M R Harshana | | | 1066 | SRI | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Jayasinghe, L Hirun Randira | | | 1175 | SRI | 1.00 | 1 | 0.38 | 20 | 7.60 | | | Thusiyanthan, V | | | 1151 | SRI | 1.00 | 1 | 0.35 | 20 | 7.00 | |
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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