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Individual Calculations April 2008 |
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| Hapuarachchi, H L M Total change: -45.35 | |   |
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| Sri Lanka National B Chess Championships 2007 | Colombo | SRI | 2007-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2087 | 1909 | 1.00 | 4 | -0.10 | 25 | -2.50 | |
|  Anurudda, G.c. | | | 2167 | SRI | 0.00 | 1 | -0.18 | 25 | -4.50 | | | Weerawardane, R | | | 2171 | SRI | 0.00 | 1 | -0.18 | 25 | -4.50 | |  Wijekoon, Chandana | | | 1989 | SRI | 1.00 | 1 | 0.61 | 25 | 15.25 | | | , Tennekoon.i.l.k | | | 2022 | SRI | 0.00 | 1 | -0.35 | 25 | -8.75 | |
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) | | | | Commonwealth Chess Championships | Sirifort Sports Complex, Khel Gaon, New Delhi, India. | IND | 2007-12-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2021 | 1922 | 1.50 | 8 | -1.48 | 25 | -37.00 | |
| | Sangma, Rahul | | | 2272 | IND | 0.00 | 1 | -0.11 | 25 | -2.75 | | | Kathmale, Sameer | | | 2099 | IND | 0.50 | 1 | 0.23 | 25 | 5.75 | | | Pon, N Krithika | | wf | 2140 | IND | 0.00 | 1 | -0.22 | 25 | -5.50 | | | Surendran, N | | | 2126 | IND | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Fenil, Shah | | | 2124 | IND | 0.00 | 1 | -0.24 | 25 | -6.00 | | | Krishna Teja, N | | | 1777 | IND | 1.00 | 1 | 0.31 | 25 | 7.75 | | | Negi, D S | | | 2056 | IND | 0.00 | 1 | -0.32 | 25 | -8.00 | | | Munish, Gupta | | | 1572 | IND | 0.00 | 1 | -0.89 | 25 | -22.25 | |
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) | | | NOTE: K factor changed | | 3rd Asian Schools Chess Festival under 15 Boys | Kandy | SRI | 2008-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1898 | 1886 | 1.00 | 3 | -0.45 | 15 | -6.75 | |
| | Ajmera, Atishay | | | 1902 | IND | 0.00 | 1 | -0.48 | 15 | -7.20 | | | Kottahachchy, K.o.v. | | | 1797 | SRI | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Kasthuri, Arachchill Akkila Kavi | | | 1995 | SRI | 0.50 | 1 | 0.15 | 15 | 2.25 | |
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) | | | NOTE: K factor changed | | Colombo International Chess Festival | Colombo | SRI | 2008-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1993 | 1886 | 1.50 | 4 | 0.06 | 15 | 0.90 | |
| | Fermamdo, J M M P | | | 2027 | SRI | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Kurukulasuriya, Prasanna | | | 2052 | SRI | 0.00 | 1 | -0.28 | 15 | -4.20 | | | Kuruppu, Danuke | | | 2094 | SRI | 0.50 | 1 | 0.27 | 15 | 4.05 | | | Kottahachchy, K O V | | | 1797 | SRI | 0.50 | 1 | -0.12 | 15 | -1.80 | |
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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