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Individual Calculations September 2015 |
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| Jayawardana, Lasal Total change: 160.40 | |   |
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| National Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1602 | 1342 | 2.00 | 6 | 0.82 | 40 | 32.80 | |
|  Dassanayake, D M G S | | | 1742 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Herath, H M S S A | | | 1569 | SRI | 0.50 | 1 | 0.29 | 40 | 11.60 | | | Kumarawadu, C S | | | 1581 | SRI | 1.00 | 1 | 0.80 | 40 | 32.00 | | | De Silva, Rasheen | | | 1742 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Dahanayake, Kalindu | | | 1443 | SRI | 0.50 | 1 | 0.14 | 40 | 5.60 | | | Siriwardena, G T D | | | 1534 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | | | * 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) | | | | 6th Kandy Open International Rating Chess Championship | Kandy | SRI | 2015-08-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1540 | 1342 | 3.00 | 6 | 1.35 | 40 | 54.00 | |
| | Kandearachchi, Jayanga | | | 1676 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Madusanka, L D P | | | 1740 | SRI | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Weerasooriya, J M | | | 1698 | SRI | 0.50 | 1 | 0.39 | 40 | 15.60 | | | Ranasinghe, Shalini | | | 1552 | SRI | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Nelligedara, Amandi | | | 1037 | SRI | 1.00 | 1 | 0.14 | 40 | 5.60 | | | De Silva, J I Ajantha | | | 1535 | SRI | 0.50 | 1 | 0.25 | 40 | 10.00 | |
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 |
| 1558 | 1342 | 4.00 | 8 | 1.84 | 40 | 73.60 | |
| | Anojman, S. | | | 1707 | SRI | 1.00 | 1 | 0.90 | 40 | 36.00 | | | Samaranayake, K P R N | | | 1742 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Ekanayake, A M B | | | 1650 | SRI | 0.50 | 1 | 0.36 | 40 | 14.40 | | | Kotalawala, Vinodh | | | 1617 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Perera, Thisura Damsith | | | 1168 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Wickramasinghe, Dilhara Ishini | | wf | 1742 * | SRI | 0.50 | 1 | 0.42 | 40 | 16.80 | | | Peiris, H Pevinya | | | 1669 | SRI | 0.00 | 1 | -0.13 | 40 | -5.20 | | | Chamathka, Weerasinghe A Chethan | | | 1167 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | * 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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