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Individual Calculations September 2015 |
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| Roshan, K Total change: 30.80 | |   |
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| Mercantile / Government Services International Rating Chess Championship 2015 | Colombo | SRI | 2015-07-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1742 | 1366 | 2.00 | 4 | 1.61 | 20 | 32.20 | |
|  Senanayake, P R | | wf | 1766 * | SRI | 0.50 | 1 | 0.42 | 20 | 8.40 | |  Wickramasinghe, N G Namal | | | 1766 * | SRI | 0.50 | 1 | 0.42 | 20 | 8.40 | | | Withanage, Nishantha | | | 1755 | SRI | 0.00 | 1 | -0.09 | 20 | -1.80 | | | Athukorala, Nethupul Pasan | | | 1679 | SRI | 1.00 | 1 | 0.86 | 20 | 17.20 | | | * 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) | | | | National Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1214 | 1366 | 3.00 | 5 | -0.42 | 20 | -8.40 | |
| | Wimaladharma, W Jithain Oshadha | | | 1032 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Jayasekara, J A Hesara Nadil | | | 1129 | SRI | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Fernando, L V M | | | 1614 | SRI | 0.00 | 1 | -0.19 | 20 | -3.80 | | | Devnaka, Chamin | | | 1178 | SRI | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Liyanagama, Pasandul | | | 1119 | SRI | 0.50 | 1 | -0.31 | 20 | -6.20 | |
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 Open Chess Championship 2015 | Colombo | SRI | 2015-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1278 | 1366 | 4.00 | 6 | 0.35 | 20 | 7.00 | |
| | Liyanage, R L Jayana S | | | 1041 | SRI | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Jayatilaka, W M M Amodya | | | 1124 | SRI | 1.00 | 1 | 0.20 | 20 | 4.00 | | | Gamage, H Charanga Jithmal | | | 1671 | SRI | 0.50 | 1 | 0.36 | 20 | 7.20 | | | Ranawake, Sanuda D | | | 1178 | SRI | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Punchihewa, Geeneth Devmika | | | 1175 | SRI | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Senarath, B T A Y | | | 1477 | SRI | 0.00 | 1 | -0.35 | 20 | -7.00 | |
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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