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Individual Calculations June 2023 |
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| Perera, Sachith Lakshan Total change: -74.80 | |   |
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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 |
| 1398 | 1146 | 0.00 | 3 | -0.57 | 40 | -22.80 | |
|  Karunarathne, K M H B | | | 1464 | SRI | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Perera, B Jayod Yasindu Rashmika | | | 1335 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Mathes Arachchi, Bhanila M | | | 1396 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | |
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) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1362 | 1146 | 0.00 | 3 | -0.70 | 40 | -28.00 | |
|  Bimansa, D G Jayandi | | | 1343 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Perera, G Thinuka Geethula | | | 1457 | SRI | 0.00 | 1 | -0.14 | 40 | -5.60 | | | Pathmasiri, R D Isuru Saranga | | | 1285 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1406 | 1138 | 0.00 | 3 | -0.60 | 40 | -24.00 | |
| | Madushanka, B W M Malith | | | 1598 | SRI | 0.00 | 1 | -0.05 | 40 | -2.00 | | | Fernando, W K B Thumula Theekshan | | | 1341 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Wijerathna, Vinuka Dihain | | | 1280 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | |
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) | | |
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