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Individual Calculations June 2023 |
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| Piyantha, M A G A Total change: 6.40 | |   |
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| Supr Knights Open International Rating Chess Championship 2023 | Colombo | SRI | 2023-04-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1572 | 1040 | 0.00 | 1 | -0.03 | 20 | -0.60 | |
|  Lakshitha, H H Sasindu | | | 1572 | SRI | 0.00 | 1 | -0.03 | 20 | -0.60 | |
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) | | | | Sri Lanka Mercantile and Government Service Chess Championship 2023 | Colombo | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1705 | 1040 | 0.00 | 2 | -0.03 | 20 | -0.60 | |
|  Dickmadugodage, Ravi Prabath | | | 1845 | SRI | 0.00 | 1 | 0.00 | 20 | 0.00 | | | Liyanagedara, L G A | | wc | 1565 | SRI | 0.00 | 1 | -0.03 | 20 | -0.60 | |
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 |
| 1261 | 1040 | 1.50 | 5 | 0.38 | 20 | 7.60 | |
| | Chamathka, W A Chethani | | | 1335 | SRI | 0.00 | 1 | -0.15 | 20 | -3.00 | | | Jayasooriya, Ruvin Sandharu | | | 1217 | SRI | 0.50 | 1 | 0.23 | 20 | 4.60 | | | Ashad, Nevan Mishal Mohomed | | | 1271 | SRI | 0.00 | 1 | -0.21 | 20 | -4.20 | | | Wadduwage, Thamindu Upeksha | | | 1218 | SRI | 0.00 | 1 | -0.27 | 20 | -5.40 | | | Kaushalya, W A K | | | 1262 | SRI | 1.00 | 1 | 0.78 | 20 | 15.60 | |
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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