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Individual Calculations February 2023 |
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| Perera, Sachith Lakshan Total change: 62.00 | |   |
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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 |
| 1298 | 1032 | 1.50 | 4 | 0.75 | 40 | 30.00 | |
|  Nawanjana, R A Thaweesha | | | 1162 | SRI | 0.00 | 1 | -0.32 | 40 | -12.80 | | | Dilshara, T G Sachindu | | | 1275 | SRI | 0.50 | 1 | 0.30 | 40 | 12.00 | |  Francis, U M Senal Vishmin | | | 1371 | SRI | 0.50 | 1 | 0.38 | 40 | 15.20 | | | Thennakoon, Disara | | | 1384 | SRI | 0.50 | 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) | | | | Kaluthara International Chess Festival 2023 | Kaluthara | SRI | 2023-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1309 | 1032 | 1.50 | 4 | 0.80 | 40 | 32.00 | |
| | Herath, H M S S A | | | 1399 | SRI | 0.50 | 1 | 0.40 | 40 | 16.00 | | | Kannangara, Ginuri | | | 1220 | SRI | 0.50 | 1 | 0.24 | 40 | 9.60 | | | Akuratiya, A G Javindi Avarjana | | | 1308 | SRI | 0.50 | 1 | 0.33 | 40 | 13.20 | | | Abiru, K A Aken | | | 1309 | 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) | | |
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