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Individual Calculations September 2015 |
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| Karunarathne, D D W Gamini Total change: -44.00 | |   |
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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 |
| 1640 | 1303 | 0.50 | 3 | 0.14 | 20 | 2.80 | |
|  Sheriff, T S | | | 1667 | SRI | 0.50 | 1 | 0.40 | 20 | 8.00 | |  Wettasinghe, S V | | | 1631 | SRI | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Dissanayake, Ranura | | | 1622 | SRI | 0.00 | 1 | -0.13 | 20 | -2.60 | |
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 |
| 1314 | 1303 | 0.00 | 2 | -0.98 | 20 | -19.60 | |
| | Senavin, Dunura | | | 1588 | SRI | 0.00 | 1 | -0.16 | 20 | -3.20 | | | Seneviratne, Nivin Sithija | | | 1039 | SRI | 0.00 | 1 | -0.82 | 20 | -16.40 | |
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) | | | | Sri Lanka Open Chess Championship 2015 | Colombo | SRI | 2015-08-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1088 | 1303 | 2.50 | 5 | -1.36 | 20 | -27.20 | |
| | Nanayakkara, K G Rishitha Shenal | | | 1119 | SRI | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Liyanage, Pesandu Rashmitha | | | 1045 | SRI | 0.50 | 1 | -0.32 | 20 | -6.40 | | | Hetti Arachchige, Thisumi S | | | 1071 | SRI | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Prasanna, H G Ajith | | | 1083 | SRI | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Jayatilaka, W M M Amodya | | | 1124 | SRI | 0.00 | 1 | -0.73 | 20 | -14.60 | |
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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