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Individual Calculations June 2023 |
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| De Silva, Osheen Total change: 12.60 | |   |
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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 |
| 1520 | 1712 | 6.00 | 9 | -0.26 | 20 | -5.20 | |
|  Thenusha, K | | | 1312 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Karunarathne, D D W Gamini | | | 1243 | SRI | 1.00 | 1 | 0.05 | 20 | 1.00 | | | Wickramaarachchi, Nayanaka Insara | | | 1384 | SRI | 0.50 | 1 | -0.37 | 20 | -7.40 | | | Sanuda, Rehan | | | 1331 | SRI | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Gunaweera, Geenuka Kavinu | | | 1355 | SRI | 0.50 | 1 | -0.39 | 20 | -7.80 | | | Perera, G Thinuka Geethula | | | 1457 | SRI | 1.00 | 1 | 0.19 | 20 | 3.80 | | | Galappaththi, Chinthaka Anuruddh | f | | 1973 | SRI | 1.00 | 1 | 0.82 | 20 | 16.40 | | | Amarasinghe, A A C B | c | | 1855 | SRI | 0.00 | 1 | -0.31 | 20 | -6.20 | | | Wijekoon, Chandana | c | | 1772 | SRI | 0.00 | 1 | -0.42 | 20 | -8.40 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 |
| 1438 | 1712 | 7.00 | 8 | 0.99 | 20 | 19.80 | |
| | Senarathna, Chamithu Dewwin | | | 1093 | SRI | 1.00 | 1 | 0.02 | 20 | 0.40 | | | Wijewickrama, Ayod Induwara | | | 1200 | SRI | 0.50 | 1 | -0.46 | 20 | -9.20 | | | Sethumsa, R B Hasadi | | | 1312 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Wijerathna, Vinuka Dihain | | | 1280 | SRI | 1.00 | 1 | 0.07 | 20 | 1.40 | | | Hansana, G Haritha | c | | 1376 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Laksiri, A A Kavishka Gimshan | | | 1485 | SRI | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Alahakoon, Isuru | f | | 1875 | SRI | 1.00 | 1 | 0.72 | 20 | 14.40 | | | Kaluarachchi, Achinthya Shamen | | | 1884 | SRI | 0.50 | 1 | 0.23 | 20 | 4.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 |
| 1498 | 1676 | 5.50 | 8 | -0.16 | 20 | -3.20 | |
| | Sithumsa, H G Sasmi | | | 1276 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Dissanayaka, D A K N R | | | 1258 | SRI | 1.00 | 1 | 0.07 | 20 | 1.40 | | | Ovitigala, Chenitha Mithvidu | | | 1456 | SRI | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Perera, G Thinuka Geethula | | | 1549 | SRI | 0.50 | 1 | -0.17 | 20 | -3.40 | | | Newansa, M Esandi | | | 1537 | SRI | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Nanayakkara, Sanuk | | | 1455 | SRI | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Weerawardane, Romesh | m | | 1896 | SRI | 0.50 | 1 | 0.28 | 20 | 5.60 | | | Gamage, Ovin Vidmal | | | 1554 | SRI | 0.00 | 1 | -0.67 | 20 | -13.40 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 |
| 1445 | 1676 | 6.00 | 8 | 0.06 | 20 | 1.20 | |
| | Sasvindu, D G S G | | | 1276 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Somarathne, L H M G S | | | 1229 | SRI | 1.00 | 1 | 0.06 | 20 | 1.20 | | | Pesanjith, M T H Sansutha | | | 1341 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Amarasinghe, A A C B | c | | 1843 | SRI | 0.00 | 1 | -0.28 | 20 | -5.60 | | | Pathmasiri, R D Isuru Saranga | | | 1354 | SRI | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Abiru, K A Aken | | | 1403 | SRI | 0.50 | 1 | -0.33 | 20 | -6.60 | | | Indrajith, J A K N T | | | 1302 | SRI | 1.00 | 1 | 0.10 | 20 | 2.00 | | | Sivathanujan, S | | | 1809 | SRI | 0.50 | 1 | 0.18 | 20 | 3.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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