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Individual Calculations September 2015 |
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| Hetti Arachchige, Thisumi S Total change: 18.00 | |   |
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| National Women's Amateur Chess Championship 2015 | Colombo | SRI | 2015-08-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1269 | 1071 | 2.00 | 4 | 0.95 | 40 | 38.00 | |
|  Perera, Hansini | | | 1312 | SRI | 1.00 | 1 | 0.80 | 40 | 32.00 | |  Kodikara, K K M Sachintha | | wc | 1439 | SRI | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Rathnayake, Nevindi Gihansa | | | 1218 | SRI | 0.00 | 1 | -0.30 | 40 | -12.00 | | | De Silva, Thenuki Hirunima | | | 1106 | SRI | 1.00 | 1 | 0.55 | 40 | 22.00 | |
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) | | | | 6th Kandy Open International Rating Chess Championship | Kandy | SRI | 2015-08-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1266 | 1071 | 1.00 | 4 | -0.11 | 40 | -4.40 | |
| | Gunasekara , W A N Senpathi | | | 1471 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Perera , Udari Dilrukshi | | | 1001 | SRI | 1.00 | 1 | 0.40 | 40 | 16.00 | | | Jayawickrama, U W R K | | | 1289 | SRI | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Vidyarathna, Anjitha | | | 1303 | SRI | 0.00 | 1 | -0.21 | 40 | -8.40 | | | * 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 |
| 1345 | 1071 | 0.50 | 5 | -0.39 | 40 | -15.60 | |
| | Dissanayake, Kamesh Janaja | | | 1383 | SRI | 0.00 | 1 | -0.14 | 40 | -5.60 | | | Perera, Hansini | | | 1312 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Dissanayake, Manusha Dinuk | | | 1471 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Karunarathne, D D W Gamini | | | 1303 | SRI | 0.50 | 1 | 0.29 | 40 | 11.60 | | | Kodithuwakku, Lisara | | | 1255 | SRI | 0.00 | 1 | -0.26 | 40 | -10.40 | | | * 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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