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Individual Calculations June 2023 |
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| Samarakoon, Sasndu Ayod Total change: 39.60 | |   |
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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 |
| 1164 | 1021 | 2.00 | 4 | 0.76 | 40 | 30.40 | |
|  Wijayarathna, N Naaditha Suhas Ka | | | 1150 | SRI | 0.50 | 1 | 0.17 | 40 | 6.80 | | | Batagoda, Bevin Yashel | | | 1183 | SRI | 1.00 | 1 | 0.71 | 40 | 28.40 | |  Samaraweera, S M Sethika Hansira | | | 1163 | SRI | 0.00 | 1 | -0.31 | 40 | -12.40 | | | Ethan, De Hoedt | | | 1159 | SRI | 0.50 | 1 | 0.19 | 40 | 7.60 | |
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) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1273 | 1021 | 2.00 | 6 | 0.81 | 40 | 32.40 | |
| | Nethsara, R Navod | | | 1424 | SRI | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Nanayakkara, M M | | | 1268 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | | | De Silva, B P Chanthuli Thanishka | | | 1225 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Fernando, Mayon Dinuth Mindula | | | 1182 | SRI | 1.00 | 1 | 0.71 | 40 | 28.40 | | | Fernando, W K B Thumula Theekshan | | | 1243 | SRI | 0.00 | 1 | -0.22 | 40 | -8.80 | | | Kaumina, M Yashika | | | 1295 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1296 | 1081 | 1.00 | 4 | 0.05 | 40 | 2.00 | |
| | Rajawasala, R U D Janith Dulmina | | | 1417 | SRI | 0.50 | 1 | 0.38 | 40 | 15.20 | | | Manuwaruna, Sethun Neththaru | | | 1345 | SRI | 0.00 | 1 | -0.18 | 40 | -7.20 | | | Deenad, Jathunge Sanjul | | | 1203 | SRI | 0.00 | 1 | -0.33 | 40 | -13.20 | | | Jayasooriya, Ruvin Sandharu | | | 1217 | SRI | 0.50 | 1 | 0.18 | 40 | 7.20 | |
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) | | | | 1st Rahulians International Chess Festival 2023 | Matara | SRI | 2023-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1316 | 1081 | 0.00 | 3 | -0.63 | 40 | -25.20 | |
| | Nissanka, N M Thenura Yasendra | | | 1379 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Kaumina, M Yashika | | | 1295 | SRI | 0.00 | 1 | -0.23 | 40 | -9.20 | | | De, Silva Kk Onitha Dinudika | | | 1275 | SRI | 0.00 | 1 | -0.25 | 40 | -10.00 | |
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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