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Individual Calculations May 2011 |
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| Perera, W C C Total change: 3.45 | |   |
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| Sri Lanka Open International Rating Tournament 2011 | Colombo | SRI | 2011-03-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1842 | 2077 | 5.50 | 7 | 0.06 | 15 | 0.90 | |
|  Perera, A K N A | | | 1677 * | SRI | 0.50 | 1 | -0.42 | 15 | -6.30 | | | Senanayaka, P D | | | 1826 | SRI | 1.00 | 1 | 0.19 | 15 | 2.85 | |  Singhai, Niklesh Jain | | | 1972 | IND | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Ranasinghe, S D | | | 1835 | SRI | 0.50 | 1 | -0.30 | 15 | -4.50 | | | Jayanka, L P P R | | | 1711 | SRI | 1.00 | 1 | 0.10 | 15 | 1.50 | | | Kuruwitage, Yasas Kalana | | | 1925 | SRI | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Alahakoon, Isuru | | | 1950 | SRI | 1.00 | 1 | 0.33 | 15 | 4.95 | | | * 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) | | | | Asian Zonal 2011, Zone 3.2 | Colombo | SRI | 2011-03-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2144 | 2077 | 3.50 | 8 | 0.09 | 15 | 1.35 | |
| | Murshed, Niaz | g | | 2455 | BAN | 0.00 | 1 | -0.09 | 15 | -1.35 | | | De Silva, Osheen | | | 1936 | SRI | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Amer, Karim | | | 2257 | PAK | 1.00 | 1 | 0.74 | 15 | 11.10 | | | Minhazuddin, Ahmed | f | | 2391 | BAN | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Rajapakse, R M C M | | | 2171 | SRI | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Mallawarachchi, T S | | | 1984 | SRI | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Anuruddha, G C | | | 2141 | SRI | 0.00 | 1 | -0.41 | 15 | -6.15 | | | Ahmed, Fuad | | | 1817 | MDV | 1.00 | 1 | 0.18 | 15 | 2.70 | |
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 National Youth Under 18 Chess Championship 2011 | Colombo | SRI | 2011-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1889 | 2077 | 4.50 | 6 | 0.08 | 15 | 1.20 | |
| | Egodage, Keshan | | | 1795 | SRI | 1.00 | 1 | 0.16 | 15 | 2.40 | | | Pinto, Semuthu | | | 1859 | SRI | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Samarakoon, U L | | | 1889 | SRI | 0.50 | 1 | -0.24 | 15 | -3.60 | | | Kuruwita, E Yasas Kalana | | | 1925 | SRI | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Ranasinghe, S D | | | 1835 | SRI | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Kottahachchy, K O V | | | 2033 | SRI | 0.50 | 1 | -0.06 | 15 | -0.90 | |
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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