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Individual Calculations November 2023 |
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| Gonawala, B V S D D Total change: 5.20 | |   |
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| Sri Lanka Junior National Chess Championship 2023 | Kandy | SRI | 2023-08-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1557 | 1126 | 0.00 | 2 | -0.15 | 40 | -6.00 | |
|  Sumanathilake, Yonal | | | 1646 | SRI | 0.00 | 1 | -0.03 | 40 | -1.20 | | | Wimalarathne, K G | | | 1467 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | |
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) | | | | Kandy Open International Rating Chess Championships 2023 | Kandy | SRI | 2023-09-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1334 | 1126 | 1.50 | 5 | 0.28 | 40 | 11.20 | |
| | Alwis, H Sandithi Kusalya | | | 1311 | SRI | 0.00 | 1 | -0.26 | 40 | -10.40 | | | Wijetunga, Pasindi Mekala | | | 1373 | SRI | 1.00 | 1 | 0.81 | 40 | 32.40 | |  Nawanjana, R A Thaweesha | | | 1276 | SRI | 0.00 | 1 | -0.30 | 40 | -12.00 | | | Lakshitha, H H Sasindu | | | 1484 | SRI | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Chandrasiri, R B A | | | 1224 | SRI | 0.50 | 1 | 0.13 | 40 | 5.20 | |
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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