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Individual Calculations June 2023 |
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| Dissanayake, D M Madushan Sameera Total change: -1.60 | |   |
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| 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1350 | 1229 | 2.00 | 5 | -0.05 | 20 | -1.00 | |
|  Alahakoon, Isuru | f | | 1875 | SRI | 0.00 | 1 | -0.01 | 20 | -0.20 | | | Fernando, Diyon Senuth Randilu | | | 1064 | SRI | 1.00 | 1 | 0.28 | 20 | 5.60 | |  Kodithuwakku, K K Dinujaya | | | 1367 | SRI | 0.00 | 1 | -0.31 | 20 | -6.20 | | | Thewmali, R K Nuthara | | | 1059 | SRI | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Wickramaarachchi, Nayanaka Insara | | | 1384 | SRI | 0.00 | 1 | -0.29 | 20 | -5.80 | |
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 |
| 1381 | 1202 | 1.00 | 3 | 0.12 | 20 | 2.40 | |
| | Perera, H A Lisanda Vinsith | | | 1464 | SRI | 1.00 | 1 | 0.82 | 20 | 16.40 | | | Newansa, M Esandi | | | 1537 | SRI | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Bandara, B G S N R | | | 1143 | SRI | 0.00 | 1 | -0.58 | 20 | -11.60 | |
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) | | | | 1st Rahulians International Chess Festival 2023 | Matara | SRI | 2023-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1403 | 1202 | 1.00 | 4 | -0.15 | 20 | -3.00 | |
| | Laksiri, A A Kavishka Gimshan | | | 1619 | SRI | 0.00 | 1 | -0.07 | 20 | -1.40 | | | Methmani, Nelunika | | wm | 1578 | SRI | 1.00 | 1 | 0.91 | 20 | 18.20 | | | Abiru, K A Aken | | | 1403 | SRI | 0.00 | 1 | -0.24 | 20 | -4.80 | | | Dayarathne, M D Damsen Chandradit | | | 1010 | SRI | 0.00 | 1 | -0.75 | 20 | -15.00 | |
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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