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Individual Calculations June 2023 |
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| Vandabona, Dinada Akein Total change: -32.00 | |   |
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| Sri Lanka National Youth Chess Championship 2023 - Under 10Yrs Open | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1150 | 1085 | 0.50 | 2 | -0.32 | 40 | -12.80 | |
|  Koswattage, Biman | | | 1171 | SRI | 0.50 | 1 | 0.12 | 40 | 4.80 | |  Perumpuli, Arachchi Lithula Rave | | | 1128 | SRI | 0.00 | 1 | -0.44 | 40 | -17.60 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1208 | 1079 | 0.50 | 3 | -0.48 | 40 | -19.20 | |
| | Bulugahapitiya, I D | | | 1211 | SRI | 0.50 | 1 | 0.18 | 40 | 7.20 | | | Mayadunna, D Vihan Sanija | | | 1160 | SRI | 0.00 | 1 | -0.39 | 40 | -15.60 | | | Bimansa, D G Jayandi | | | 1252 | SRI | 0.00 | 1 | -0.27 | 40 | -10.80 | |
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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