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Individual Calculations June 2023 |
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| Perera, G Thinuka Geethula Total change: 26.35 | |   |
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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 |
| 1318 | 1457 | 5.00 | 7 | 0.40 | 31 | 12.40 | |
|  Nawanjana, R A Thaweesha | | | 1167 | SRI | 1.00 | 1 | 0.16 | 31 | 4.96 | |  Sugathadasa, Sasiru Hansana | | | 1212 | SRI | 1.00 | 1 | 0.20 | 31 | 6.20 | | | Wijekoon, Chandana | c | | 1772 | SRI | 0.50 | 1 | 0.36 | 31 | 11.16 | | | De Silva, Osheen | | | 1712 | SRI | 0.00 | 1 | -0.19 | 31 | -5.89 | | | Sampath, H K G | | | 1058 | SRI | 1.00 | 1 | 0.08 | 31 | 2.48 | | | Dharan, A | | | 1178 | SRI | 0.50 | 1 | -0.34 | 31 | -10.54 | | | Premathilaka, W P P G Sampath | | | 1130 | SRI | 1.00 | 1 | 0.13 | 31 | 4.03 | |
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 |
| 1324 | 1457 | 5.00 | 7 | 0.38 | 31 | 11.78 | |
| | Gamlath, E G Y T | | | 1092 | SRI | 1.00 | 1 | 0.10 | 31 | 3.10 | | | Perera, B Yenuthi Sahanlee | | | 1163 | SRI | 0.00 | 1 | -0.85 | 31 | -26.35 | | | Perera, Sachith Lakshan | | | 1146 | SRI | 1.00 | 1 | 0.14 | 31 | 4.34 | | | Fernando, Mayon Dinuth Mindula | | | 1182 | SRI | 1.00 | 1 | 0.17 | 31 | 5.27 | | | Gunawardena, Ramiru Sithika | | | 1275 | SRI | 1.00 | 1 | 0.26 | 31 | 8.06 | | | Amarathunga, Kosala Sandeepa Cham | | | 1557 | SRI | 1.00 | 1 | 0.64 | 31 | 19.84 | | | Bandara, Dhanushka | | | 1853 | SRI | 0.00 | 1 | -0.08 | 31 | -2.48 | |
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 |
| 1445 | 1549 | 5.00 | 8 | 0.07 | 31 | 2.17 | |
| | Perera, Prabodha Sathsara | | | 1149 * | SRI | 1.00 | 1 | 0.08 | 31 | 2.48 | | | Jayasooriya, Ruvin Sandharu | | | 1217 | SRI | 1.00 | 1 | 0.12 | 31 | 3.72 | | | Labunahewage, Dulein Bimsath | | | 1349 | SRI | 1.00 | 1 | 0.24 | 31 | 7.44 | | | De Silva, Osheen | | | 1676 | SRI | 0.50 | 1 | 0.17 | 31 | 5.27 | | | Kodithuwakku, Himsara | | | 1641 | SRI | 0.50 | 1 | 0.13 | 31 | 4.03 | | | Kaluarachchi, Achinthya Shamen | | | 1844 | SRI | 0.50 | 1 | 0.35 | 31 | 10.85 | | | Kaumina, M Yashika | | | 1295 | SRI | 0.50 | 1 | -0.31 | 31 | -9.61 | | | Hendavitharana, D S | | | 1389 | SRI | 0.00 | 1 | -0.71 | 31 | -22.01 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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