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Individual Calculations September 2015 |
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| Herath, H M S S A Total change: -44.60 | |   |
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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 |
| 1673 | 1569 | 1.50 | 4 | -0.01 | 20 | -0.20 | |
|  Desilva, T | | | 1931 | SRI | 0.00 | 1 | -0.10 | 20 | -2.00 | |  Alahakoon, A M C | | | 1792 | SRI | 0.50 | 1 | 0.28 | 20 | 5.60 | | | Nikahetiya, Asitha | | | 1663 | SRI | 0.00 | 1 | -0.37 | 20 | -7.40 | | | Theivaseelan, Selvarajah | | | 1306 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | |
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 |
| 1548 | 1569 | 4.00 | 7 | 0.30 | 20 | 6.00 | |
| | Randil, Lakshitha | | | 1887 | SRI | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Jayawardana, T M A | | | 1272 | SRI | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Jayawardana, Lasal | | | 1342 | SRI | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Weerasinghe, Chamath | | | 1818 | SRI | 0.50 | 1 | 0.31 | 20 | 6.20 | | | Fernando, J S Aloka | | | 1414 | SRI | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Lasitha, Subash | c | | 1793 | SRI | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Shasikumar, Nagarajah | | | 1313 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | |
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) | | | | 6th Kandy Open International Rating Chess Championship | Kandy | SRI | 2015-08-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1382 | 1569 | 5.00 | 8 | -0.62 | 20 | -12.40 | |
| | Samarakoon, S M S S | | | 1169 * | SRI | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Marapana, Sanupa Bimsath | | | 1169 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Pallie, Ehsha Mishela | | wc | 1272 | SRI | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Samaranayake, K P R N | | | 1786 | SRI | 0.00 | 1 | -0.22 | 20 | -4.40 | | | Dissanayake, V R Sadun Madushank | | | 1299 | SRI | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Pathirana, Hasitha Jayanth | | | 1320 | SRI | 0.50 | 1 | -0.31 | 20 | -6.20 | | | Bandara, Kasun | | | 1212 | SRI | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Premanath, Dinushki | | wf | 1826 | SRI | 0.00 | 1 | -0.18 | 20 | -3.60 | | | * 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) | | | | Sri Lanka Open Chess Championship 2015 | Colombo | SRI | 2015-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1342 | 1569 | 5.00 | 9 | -1.90 | 20 | -38.00 | |
| | Senevirathne, H Dulith Taruka | | | 1171 | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Perera, W C C | c | | 1969 * | SRI | 0.00 | 1 | -0.08 | 20 | -1.60 | | | Gunatunga, K D Ovindu Mandith | | | 1198 | SRI | 0.50 | 1 | -0.40 | 20 | -8.00 | | | Rajendram, Branavan | | | 1197 | SRI | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Perera, Hansini | | | 1312 | SRI | 0.50 | 1 | -0.32 | 20 | -6.40 | | | Jayawickrama, U W R K | | | 1289 | SRI | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Wickramasinghe, Hiruna | | | 1368 | SRI | 0.00 | 1 | -0.76 | 20 | -15.20 | | | Mendis, P Kavinda | | | 1286 | SRI | 0.50 | 1 | -0.34 | 20 | -6.80 | | | Deraniyagala, Vimukthi Prathap | | | 1289 | SRI | 0.50 | 1 | -0.34 | 20 | -6.80 | | | * 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) | | |
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