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Individual Calculations February 2023 |
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| Amarathunga, Kosala Sandeepa Cham Total change: 86.90 | |   |
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| CFSL Golden Jubilee International Rating Chess Tournament 2022 | Colombo | SRI | 2022-11-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1288 | 1389 | 3.50 | 8 | -1.49 | 22 | -32.78 | |
|  Wadduwage, Thamindu Upeksha | | | 1057 | SRI | 0.50 | 1 | -0.38 | 22 | -8.36 | |  Fernando, Diyon Senuth Randilu | | | 1072 | SRI | 1.00 | 1 | 0.13 | 22 | 2.86 | | | Kodithuwakku, K A Chathura Basuru | | | 1235 | SRI | 0.50 | 1 | -0.21 | 22 | -4.62 | | | Sivathanujan, S | | | 1729 | SRI | 0.00 | 1 | -0.12 | 22 | -2.64 | | | Bimansa, D G Jayandi | | | 1128 | SRI | 1.00 | 1 | 0.18 | 22 | 3.96 | | | Gnanaseelan, Jude Dorison | | | 1445 | SRI | 0.50 | 1 | 0.08 | 22 | 1.76 | | | Laksiri, A A Kavishka Gimshan | | | 1475 | SRI | 0.00 | 1 | -0.38 | 22 | -8.36 | | | Nawanjana, R A Thaweesha | | | 1162 | SRI | 0.00 | 1 | -0.79 | 22 | -17.38 | |
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) | | | | Ethugalpura Open International Rating Chess Championships 2022 | Kurunegala | SRI | 2022-12-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1320 | 1423 | 6.00 | 8 | 0.87 | 22 | 19.14 | |
| | De Silva, K H Kalpa | | | 1128 | SRI | 1.00 | 1 | 0.15 | 22 | 3.30 | | | Lankatilleke, Sathindu Vidujaya | | | 1183 | SRI | 1.00 | 1 | 0.20 | 22 | 4.40 | | | Amarasinghe, A A C B | c | | 1908 | SRI | 0.00 | 1 | -0.04 | 22 | -0.88 | | | Kavisekara, Manula Heshan | | | 1169 | SRI | 1.00 | 1 | 0.19 | 22 | 4.18 | | | Somarathne, Subhaga Kushali | | | 1133 | SRI | 1.00 | 1 | 0.16 | 22 | 3.52 | | | Senevirathne, S D B K | | | 1696 | SRI | 0.00 | 1 | -0.17 | 22 | -3.74 | | | Panthaka, W J N Malindu | | | 1196 | SRI | 1.00 | 1 | 0.21 | 22 | 4.62 | | | Chandrasiri, R B A | | | 1146 | SRI | 1.00 | 1 | 0.17 | 22 | 3.74 | |
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) | | | | Kandy Open International Rating Chess Championships 2022 | Kandy | SRI | 2022-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1539 | 1423 | 4.50 | 7 | 1.94 | 22 | 42.68 | |
| | Somarathne, Senuka Damsath | | | 1139 | SRI | 1.00 | 1 | 0.16 | 22 | 3.52 | | | Dharmakeerthi, G K Pasindu Nims | | | 1773 | SRI | 0.50 | 1 | 0.39 | 22 | 8.58 | | | Senevirathne, S D B K | | | 1696 | SRI | 0.50 | 1 | 0.33 | 22 | 7.26 | | | Godagama, D G Mandara | | | 1074 | SRI | 1.00 | 1 | 0.11 | 22 | 2.42 | | | Wijekoon, Chandana | c | | 1823 * | SRI | 0.50 | 1 | 0.42 | 22 | 9.24 | | | Janukshan, B | | | 1556 | SRI | 0.50 | 1 | 0.18 | 22 | 3.96 | | | Weerasekara, Dishal Nimsara | | | 1714 | SRI | 0.50 | 1 | 0.35 | 22 | 7.70 | | | * 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) | | | | Kaluthara International Chess Festival 2023 | Kaluthara | SRI | 2023-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1562 | 1423 | 5.50 | 8 | 2.63 | 22 | 57.86 | |
| | De Silva, B P Chanthuli Thanishka | | | 1373 | SRI | 1.00 | 1 | 0.43 | 22 | 9.46 | | | Sivathanujan, S | | | 1849 | SRI | 0.50 | 1 | 0.43 | 22 | 9.46 | | | Egodage, Keshan | | | 1699 | SRI | 1.00 | 1 | 0.83 | 22 | 18.26 | | | Amarasinghe, A A C B | c | | 1908 | SRI | 0.50 | 1 | 0.46 | 22 | 10.12 | | | Weerakoon, D D P | | | 1657 | SRI | 1.00 | 1 | 0.79 | 22 | 17.38 | | | Weerasekara, Dishal Nimsara | | | 1714 | SRI | 0.00 | 1 | -0.15 | 22 | -3.30 | | | Thimanjana, Balage Kisandu | | | 1136 | SRI | 0.50 | 1 | -0.34 | 22 | -7.48 | | | Rajawasala, R U D Janith Dulmina | | | 1161 | SRI | 1.00 | 1 | 0.18 | 22 | 3.96 | |
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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