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Individual Calculations January 2009 |
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| Kottahachchy, K O V Total change: 16.95 | |   |
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| World Youth Chess Championships 2008 - Open 16 | Vung Tau | VIE | 2008-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2152 | 2017 | 4.00 | 10 | 0.63 | 15 | 9.45 | |
|  Csirik, Andras | | | 2324 | HUN | 0.00 | 1 | -0.14 | 15 | -2.10 | |  Raznikov, Danny | | | 2252 | ISR | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Thavandiran, Shiyam | f | | 2338 | CAN | 1.00 | 1 | 0.87 | 15 | 13.05 | | | Brown, Andrew | | | 2013 | AUS | 1.00 | 1 | 0.49 | 15 | 7.35 | | | Nguyen, Van Thanh | c | | 2200 | VIE | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Datu, Alcon John | | | 2159 | PHI | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Ivekovic, Zvonimir | | | 2270 | CRO | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Ralys, Vincas | | | 1900 | LTU | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Kobayashi, Atsuhiko | | | 1921 | JPN | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Koohestani, Sh | | | 2146 | IRI | 0.50 | 1 | 0.17 | 15 | 2.55 | |
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) | | | | Asian Schools Chess Championship, Colombo 2008 [Under 15 Boys] | Colombo | SRI | 2008-12-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1808 | 2017 | 6.50 | 8 | 0.50 | 15 | 7.50 | |
| | Egodage, Keshan Nayanajith | | | 1879 | SRI | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Rajapakse, R.m.t.c. | | | 1667 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Ajmera, Atishay | | | 1987 | IND | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Munasinghe, Thisura D. | | | 1791 | SRI | 0.50 | 1 | -0.29 | 15 | -4.35 | | | Samaranayake, K.p.r.n. | | | 1667 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Perera, W.c.c. | | | 1929 | SRI | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Sachintha, D.m. Navindu | | | 1667 | SRI | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Pinto, M.g.semuthu | | | 1874 | SRI | 0.50 | 1 | -0.19 | 15 | -2.85 | |
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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