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Individual Calculations January 2020 |
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| Sandanayake, Nimansa Sasanduni Total change: -9.20 | |   |
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| 11th Ethugalpura International Chess Championship 2019 | Kurunegala | SRI | 2019-11-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1419 | 1217 | 1.00 | 3 | 0.09 | 40 | 3.60 | |
|  Lasitha, Subash | c | | 1617 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Rupasinghe, Sarath | | | 1617 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Senanayake, C H | | | 1022 | SRI | 1.00 | 1 | 0.25 | 40 | 10.00 | | | * 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) | | | | The Kolonnawa Chess Classic International Rating Tournament 2019 | Colombo | SRI | 2019-12-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1215 | 1217 | 2.50 | 5 | -0.06 | 40 | -2.40 | |
| | Nabil Nazar, Mohamed | | | 1494 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Kolonne, K A Thisaja Senon | | | 1054 | SRI | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Abhimanyu, Iraja | | | 1427 | SRI | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Nagasinghe, Seniru Ranuth | | | 1049 | SRI | 0.50 | 1 | -0.22 | 40 | -8.80 | | | Ranasinghe, Minudi Devindi | | | 1049 | SRI | 1.00 | 1 | 0.28 | 40 | 11.20 | |
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) | | | | Sri Lanka Women's National Amateur Chess Championship 2019 | Colombo | SRI | 2019-12-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1244 | 1217 | 3.00 | 7 | -0.26 | 40 | -10.40 | |
| | Dassanayake, Tharusha Samadhi | | | 1373 | SRI | 0.00 | 1 | -0.29 | 40 | -11.60 | | | Abeysekara, Yasasi Geemini | | | 1199 | SRI | 1.00 | 1 | 0.47 | 40 | 18.80 | | | Attanayake, Chanindi Mewna | | | 1206 | SRI | 0.00 | 1 | -0.52 | 40 | -20.80 | | | Wilvalaarachchi, Oneli Omaya | | | 1340 | SRI | 0.00 | 1 | -0.33 | 40 | -13.20 | | | Piyathilaka, Oshadhi Ruwanya | | | 1103 | SRI | 1.00 | 1 | 0.34 | 40 | 13.60 | | | Jayasinghe, Thenugi Dilanya | | | 1256 | SRI | 0.50 | 1 | 0.05 | 40 | 2.00 | | | Wickramarathne, P W G Gaveshi | | | 1231 | SRI | 0.50 | 1 | 0.02 | 40 | 0.80 | |
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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