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Individual Calculations September 2015 |
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| Lakshan, G Dilina Udeepa Total change: -56.40 | |   |
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| National Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1521 | 1292 | 0.50 | 3 | -0.32 | 40 | -12.80 | |
|  Randil, Lakshitha | | | 1692 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Wanigarathne, K A N | | | 1178 | SRI | 0.50 | 1 | -0.16 | 40 | -6.40 | | | Naotunna, D R | | | 1692 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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 |
| 1286 | 1292 | 2.50 | 7 | -1.09 | 40 | -43.60 | |
| | Lokuge, Prabhath Sandaruwan | | | 1446 | SRI | 0.00 | 1 | -0.29 | 40 | -11.60 | |  Nanayakkara, K G Rishitha Shenal | | | 1119 | SRI | 1.00 | 1 | 0.27 | 40 | 10.80 | | | Siriwardena, Janaka | | | 1554 | SRI | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Jayatilaka, W M M Amodya | | | 1124 | SRI | 1.00 | 1 | 0.28 | 40 | 11.20 | | | Nirmalarajah, S | | | 1550 | SRI | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Jayasuriya, Linali Andrea | | | 1143 | SRI | 0.00 | 1 | -0.70 | 40 | -28.00 | | | Pathmasiri, R D I S | | | 1063 | SRI | 0.50 | 1 | -0.29 | 40 | -11.60 | |
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) | | |
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