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Individual Calculations June 2023 |
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| Sethumsa, R B Hasadi Total change: 58.00 | |   |
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| Sri Lanka National Youth Chess Championship 2023 - Under 10Yrs Girls | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1049 | 1086 | 0.00 | 1 | -0.55 | 40 | -22.00 | |
|  Jayasinghe, J M Senudhi Ahasya | | | 1049 | SRI | 0.00 | 1 | -0.55 | 40 | -22.00 | |
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) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1450 | 1086 | 1.00 | 5 | 0.33 | 40 | 13.20 | |
| | Yaparathne, B K B | | | 1546 | SRI | 0.50 | 1 | 0.45 | 40 | 18.00 | | | De Silva, Osheen | | | 1712 | SRI | 0.00 | 1 | -0.01 | 40 | -0.40 | | | Charutha, I G Bihandu | | | 1312 | SRI | 0.50 | 1 | 0.29 | 40 | 11.60 | |  Gunawickrama, Chenitha | | | 1246 | SRI | 0.00 | 1 | -0.29 | 40 | -11.60 | | | Wickramarathne, P W G Gaveshi | | | 1434 | SRI | 0.00 | 1 | -0.11 | 40 | -4.40 | |
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) | | | | 1st Rahulians International Chess Festival 2023 | Matara | SRI | 2023-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1292 | 1086 | 3.00 | 5 | 1.67 | 40 | 66.80 | |
| | Thumaljith, A Thenuka | | | 1008 | SRI | 1.00 | 1 | 0.39 | 40 | 15.60 | | | Gunaweera, Geenuka Kavinu | | | 1510 | SRI | 0.00 | 1 | -0.07 | 40 | -2.80 | | | Pathmasiri, R D Isuru Saranga | | | 1354 | SRI | 1.00 | 1 | 0.83 | 40 | 33.20 | | | Pehesara, P G Nithuni | | | 1369 | SRI | 0.50 | 1 | 0.34 | 40 | 13.60 | | | Wadduwage, Thamindu Upeksha | | | 1218 | SRI | 0.50 | 1 | 0.18 | 40 | 7.20 | |
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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