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Individual Calculations June 2023 |
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| Devasurendra, Menuksha Sahen Total change: -47.60 | |   |
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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 |
| 1348 | 1171 | 1.50 | 4 | 0.31 | 40 | 12.40 | |
|  Gamage, Ovin Vidmal | | | 1528 | SRI | 0.00 | 1 | -0.11 | 40 | -4.40 | | | Umandini, M W Tinushi | | | 1011 | SRI | 1.00 | 1 | 0.29 | 40 | 11.60 | |  Hendavitharana, D S | | | 1440 | SRI | 0.50 | 1 | 0.33 | 40 | 13.20 | | | Nanayakkara, Sanuk | | | 1412 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | |
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) | | | | Sri Lanka National Youth Chess Championship 2023 - Under 12Yrs Open | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1323 | 1171 | 1.50 | 4 | 0.25 | 40 | 10.00 | |
| | Ovitigala, Chenitha Mithvidu | | | 1447 | SRI | 0.50 | 1 | 0.33 | 40 | 13.20 | | | Labunahewage, Dulein Bimsath | | | 1271 | SRI | 1.00 | 1 | 0.64 | 40 | 25.60 | | | Dandeniya, D D L N | | | 1426 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Yapa, Y P G P | | | 1149 | SRI | 0.00 | 1 | -0.53 | 40 | -21.20 | |
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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1231 | 1171 | 0.00 | 4 | -1.75 | 40 | -70.00 | |
| | Amarathunga, Kosala Sandeepa Cham | | | 1472 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | | | Dharmawansa, S S | | | 1021 | SRI | 0.00 | 1 | -0.70 | 40 | -28.00 | | | Weerasekara, Dinul Vinsitha | | | 1357 | SRI | 0.00 | 1 | -0.26 | 40 | -10.40 | | | Herath, H M Chamuditha Sasen Band | | | 1072 | SRI | 0.00 | 1 | -0.64 | 40 | -25.60 | |
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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