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Individual Calculations February 2023 |
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| Siriwardene, R B Bihandu Janandit Total change: 67.60 | |   |
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| Kandy Open International Rating Chess Championships 2022 | Kandy | SRI | 2022-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1391 | 1028 | 2.00 | 6 | 1.00 | 40 | 40.00 | |
|  Alahakoon, Isuru | f | | 1925 | SRI | 0.00 | 1 | 0.00 | 40 | 0.00 | |  Galkotuwa, K A R G W D R B G | | | 1331 | SRI | 0.00 | 1 | -0.14 | 40 | -5.60 | | | Bandara, Prathibha Nethsarani | | | 1285 | SRI | 1.00 | 1 | 0.82 | 40 | 32.80 | | | Edirisinghe, E D Hansana | | | 1268 | SRI | 1.00 | 1 | 0.80 | 40 | 32.00 | | | Wickramaarachchi, Nayanaka Insara | | | 1440 | SRI | 0.00 | 1 | -0.07 | 40 | -2.80 | | | Bandara, A H M G N | | | 1096 | SRI | 0.00 | 1 | -0.41 | 40 | -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) | | | | Colombo District Youth Chess Championships 2023 - Under 18 | Dehiwala | SRI | 2023-01-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1195 | 1028 | 2.00 | 4 | 0.69 | 40 | 27.60 | |
| | Heenatigala, Nilusha Dewwan | | | 1052 | SRI | 1.00 | 1 | 0.53 | 40 | 21.20 | | | Nagahawatta, Nisal Sankalpa | | | 1006 | SRI | 1.00 | 1 | 0.47 | 40 | 18.80 | | | Sandesh, Sithika | | | 1206 | SRI | 0.00 | 1 | -0.27 | 40 | -10.80 | | | Laksiri, A A Kavishka Gimshan | | | 1517 | SRI | 0.00 | 1 | -0.04 | 40 | -1.60 | |
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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