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Individual Calculations September 2015 |
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| Gunarathna, D A Viraj Darshana Total change: 109.20 | |   |
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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 |
| 1814 | 1518 | 1.50 | 4 | 0.90 | 20 | 18.00 | |
|  Wickramanayake, T U | | | 1847 | SRI | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Ediriweera, Shakthi | | | 1768 | SRI | 0.50 | 1 | 0.31 | 20 | 6.20 | |  Wickramasinghe, N G Namal | | | 1797 | SRI | 0.50 | 1 | 0.34 | 20 | 6.80 | | | Chandrasiri, S A | | | 1845 | SRI | 0.50 | 1 | 0.37 | 20 | 7.40 | |
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 |
| 1517 | 1518 | 5.00 | 7 | 1.57 | 20 | 31.40 | |
| | Hettige, Indushika Anjani | | | 1118 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Rajapaksa, Inura | | | 1377 | SRI | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Weerasinghe, W P Dakshaka Deshan | | | 1202 | SRI | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Weerasinghe, Chamath | | | 1818 | SRI | 0.50 | 1 | 0.35 | 20 | 7.00 | | | Lasitha, Subash | c | | 1793 | SRI | 0.50 | 1 | 0.33 | 20 | 6.60 | | | Fernando, L V M | | | 1614 | SRI | 1.00 | 1 | 0.63 | 20 | 12.60 | | | Siriwardena, R I Pasan Bhanuka | | | 1699 | SRI | 0.50 | 1 | 0.24 | 20 | 4.80 | | | * 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) | | | | 6th Kandy Open International Rating Chess Championship | Kandy | SRI | 2015-08-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1504 | 1518 | 5.50 | 8 | 1.44 | 20 | 28.80 | |
| | Karunarathna, Nuthara Dulandee | | | 1118 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Wijesekara, Dinuka | | | 1118 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Danushka, M A N | | | 1879 | SRI | 0.00 | 1 | -0.10 | 20 | -2.00 | | | Balasooriya, B A M S | | | 1244 | SRI | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Ranasinghe, R Y G | | | 1299 | SRI | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Senanayaka, P D | | | 1823 | SRI | 0.50 | 1 | 0.36 | 20 | 7.20 | | | Lasitha, Subash | c | | 1793 | SRI | 0.50 | 1 | 0.33 | 20 | 6.60 | | | Basnayake, I U | | wc | 1758 | SRI | 0.50 | 1 | 0.30 | 20 | 6.00 | | | * 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 |
| 1465 | 1518 | 6.50 | 9 | 1.55 | 20 | 31.00 | |
| | De Kretser, Patrick | | | 1118 * | SRI | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Pathmasiri, R D I S | | | 1118 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Bawanya, Yenuli | | | 1242 | SRI | 1.00 | 1 | 0.17 | 20 | 3.40 | | | Kodithuwakku, Lisara | | | 1255 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Senanayaka, P D | | | 1823 | SRI | 0.50 | 1 | 0.36 | 20 | 7.20 | | | Lasitha, Subash | c | | 1793 | SRI | 0.50 | 1 | 0.33 | 20 | 6.60 | | | Dabare, Danidu | | | 1340 | SRI | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Samaranayake, K P R N | | | 1786 | SRI | 0.50 | 1 | 0.33 | 20 | 6.60 | | | Anojman, S. | | | 1707 | SRI | 0.50 | 1 | 0.25 | 20 | 5.00 | | | * 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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