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Individual Calculations June 2023 |
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| Herath, H M Chamuditha Sasen Band Total change: 9.60 | |   |
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| Sri Lanka National Youth Chess Championship 2023 - Under 10Yrs Open | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1204 | 1072 | 1.50 | 4 | 0.21 | 40 | 8.40 | |
|  Kottage, K M Nilash Nethul | | | 1157 | SRI | 1.00 | 1 | 0.62 | 40 | 24.80 | |  Wijerathna, Vinuka Dihain | | | 1280 | SRI | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Kiringoda, Thehas Rithmitha | | | 1229 | SRI | 0.50 | 1 | 0.21 | 40 | 8.40 | | | Wijayarathna, N Naaditha Suhas Ka | | | 1150 | SRI | 0.00 | 1 | -0.39 | 40 | -15.60 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1281 | 1072 | 1.00 | 4 | 0.03 | 40 | 1.20 | |
| | Rathnayaka, Minaga Yethmin | | | 1415 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Amarathunga, Piyumi Uthpala | | | 1262 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Pathirage, Yukitha Kenula Perera | | | 1277 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Devasurendra, Menuksha Sahen | | | 1171 | SRI | 1.00 | 1 | 0.64 | 40 | 25.60 | |
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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