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Individual Calculations February 2023 |
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| Hendavitharana, D S Total change: 175.60 | |   |
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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 |
| 1232 | 1214 | 2.00 | 3 | 0.50 | 40 | 20.00 | |
|  Dharmawansa, S S | | | 1045 | SRI | 1.00 | 1 | 0.28 | 40 | 11.20 | |  Gunawardhana, Devindya Oshini | | | 1574 | SRI | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Nuwarapaksha, N P M Lakvindu | | | 1077 | SRI | 1.00 | 1 | 0.32 | 40 | 12.80 | |
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) | | | | Colombo District Youth Chess Championships 2023 - Under 18 | Dehiwala | SRI | 2023-01-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1265 | 1214 | 2.50 | 4 | 0.72 | 40 | 28.80 | |
| | Nawanjana, R A Thaweesha | | | 1162 | SRI | 1.00 | 1 | 0.43 | 40 | 17.20 | | | Sandesh, Sithika | | | 1206 | SRI | 0.50 | 1 | -0.01 | 40 | -0.40 | | | Laksiri, A A Kavishka Gimshan | | | 1517 | SRI | 1.00 | 1 | 0.86 | 40 | 34.40 | | | Perera, G Thinuka Geethula | | | 1174 | SRI | 0.00 | 1 | -0.56 | 40 | -22.40 | |
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 |
| 1471 | 1214 | 4.50 | 6 | 3.17 | 40 | 126.80 | |
| | Alahakoon, T N | | | 1674 | SRI | 0.50 | 1 | 0.45 | 40 | 18.00 | | | Wettasinha, Vasanta | | | 1533 | SRI | 1.00 | 1 | 0.87 | 40 | 34.80 | | | Gamage, Ovin Vidmal | | | 1558 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Perera, Hiruka Sandesh | | | 1027 | SRI | 1.00 | 1 | 0.26 | 40 | 10.40 | | | Deshappriya, D Kalindu | | | 1486 | SRI | 1.00 | 1 | 0.83 | 40 | 33.20 | | | Kodikara, K K M Sachintha | | wf | 1545 | SRI | 1.00 | 1 | 0.88 | 40 | 35.20 | |
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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