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Individual Calculations February 2019 |
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| Perera, G Poorna Udara Dhananjay Total change: 0.40 | |   |
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| Sri Lanka National Youth Chess Championship 2018 Under - 17 years | Colombo | SRI | 2018-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1290 | 1091 | 1.00 | 4 | 0.01 | 40 | 0.40 | |
|  Punchihewa, Geeneth Devmika | | | 1339 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | |  Dananjaya, Isuru | | | 1235 | SRI | 0.50 | 1 | 0.19 | 40 | 7.60 | | | Welangalle, Pesala Dulkith | | | 1331 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Malwathugoda, H M C B | | | 1253 | SRI | 0.50 | 1 | 0.21 | 40 | 8.40 | |
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) | | |
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