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Individual Calculations February 2023 |
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| De Silva, Osheen Total change: -16.00 | |   |
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| Ethugalpura Open International Rating Chess Championships 2022 | Kurunegala | SRI | 2022-12-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1398 | 1763 | 6.00 | 8 | -1.06 | 20 | -21.20 | |
|  Somarathne, L H M G S | | | 1363 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Gunasekara, H M C P | | | 1272 | SRI | 1.00 | 1 | 0.04 | 20 | 0.80 | | | Dharmasena, W M S S B | | | 1379 | SRI | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Wickramaarachchi, Nayanaka Insara | | | 1440 | SRI | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Kalubowila, K H N | | | 1609 | SRI | 0.00 | 1 | -0.71 | 20 | -14.20 | | | Senevirathne, D C B K | | | 1374 | SRI | 0.50 | 1 | -0.41 | 20 | -8.20 | | | Gunasekara, W A N Senpathi | | | 1511 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | | | De Silva, Wijemuni Yomesh Lakshan | | | 1237 | SRI | 0.50 | 1 | -0.47 | 20 | -9.40 | | | * 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) | | | | Kandy Open International Rating Chess Championships 2022 | Kandy | SRI | 2022-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1606 | 1763 | 7.00 | 9 | 1.17 | 20 | 23.40 | |
| | Bandara, G P S S | | | 1363 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Ranasinghe, R A Lihini Himansa | | | 1197 | SRI | 1.00 | 1 | 0.02 | 20 | 0.40 | | | Pradeep, Nishantha | | | 1356 | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Abhimanyu, Iraja | | | 1465 | SRI | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Mapa, M M W H | | | 1501 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Amarasinghe, A A C B | c | | 1908 | SRI | 1.00 | 1 | 0.69 | 20 | 13.80 | | | Wiratunga, Jenith | | | 1740 | SRI | 0.50 | 1 | -0.03 | 20 | -0.60 | | | Galappaththi, Chinthaka Anuruddh | f | | 1996 | SRI | 0.50 | 1 | 0.29 | 20 | 5.80 | | | Alahakoon, Isuru | f | | 1925 | SRI | 0.00 | 1 | -0.29 | 20 | -5.80 | | | * 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 |
| 1417 | 1763 | 6.50 | 9 | -0.91 | 20 | -18.20 | |
| | Perera, W Chamoth Chiranda | | | 1363 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Yapa, D G Sanjeewa Madushan | | | 1305 | SRI | 0.00 | 1 | -0.95 | 20 | -19.00 | | | Gunasekara, Aritha Chanthula Abes | | | 1079 | SRI | 1.00 | 1 | 0.01 | 20 | 0.20 | | | Perera, B Jayod Yasindu Rashmika | | | 1153 | SRI | 1.00 | 1 | 0.02 | 20 | 0.40 | | | Abeyrathne, K W A M G Dinod Uthsa | | | 1354 | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Wickramasinghe, V W A Vinuda Vidm | | | 1422 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Newansa, M Esandi | | | 1527 | SRI | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Gamage, Ovin Vidmal | | | 1558 | SRI | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Galappaththi, Chinthaka Anuruddh | f | | 1996 | SRI | 0.00 | 1 | -0.21 | 20 | -4.20 | | | * 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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