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Individual Calculations June 2023 |
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| Viranya, A R M V Total change: 29.20 | |   |
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| Supr Knights Open International Rating Chess Championship 2023 | Colombo | SRI | 2023-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1354 | 1132 | 0.50 | 4 | -0.53 | 40 | -21.20 | |
|  Navangi, K A Savidya | | | 1007 | SRI | 0.00 | 1 | -0.67 | 40 | -26.80 | | | Dipsara, K M Dumal Kavish | | | 1417 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Gamage, Ovin Vidmal | | | 1528 | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Karunarathne, K M H B | | | 1464 | SRI | 0.50 | 1 | 0.38 | 40 | 15.20 | |
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) | | | | Sri Lanka National Youth Chess Championship 2023 - Under 16Yrs Girls | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1178 | 1132 | 2.00 | 4 | 0.20 | 40 | 8.00 | |
| | Devaraja, Dahamsa Punsadi | | | 1219 | SRI | 0.00 | 1 | -0.38 | 40 | -15.20 | | | Amarathunga, H G Gayuni Hansali | | | 1026 | SRI | 1.00 | 1 | 0.36 | 40 | 14.40 | | | Wilvalaarachchi, Oneli Omaya | | | 1433 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Madurapperuma, M A B T | | | 1035 | SRI | 1.00 | 1 | 0.37 | 40 | 14.80 | |
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 International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1527 | 1155 | 0.00 | 3 | -0.36 | 40 | -14.40 | |
| | Jayaweera, Y | | | 1711 | SRI | 0.00 | 1 | -0.03 | 40 | -1.20 | | | Wimalarathne, K G | | | 1442 | SRI | 0.00 | 1 | -0.16 | 40 | -6.40 | | | Wijeratne, Rehan Nawantha | | | 1428 | 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) | | | | 1st Rahulians International Chess Festival 2023 | Matara | SRI | 2023-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1394 | 1155 | 2.50 | 5 | 1.42 | 40 | 56.80 | |
| | Gunaweera, Geenuka Kavinu | | | 1510 | SRI | 0.50 | 1 | 0.39 | 40 | 15.60 | | | Sisuru, K M Sineth | | | 1235 | SRI | 0.50 | 1 | 0.11 | 40 | 4.40 | | | Deshappriya, D Kalindu | | | 1380 | SRI | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Kodithuwakku, K K Dinujaya | | | 1478 | SRI | 1.00 | 1 | 0.87 | 40 | 34.80 | | | Pehesara, P G Nithuni | | | 1369 | SRI | 0.50 | 1 | 0.27 | 40 | 10.80 | |
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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