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Individual Calculations June 2023 |
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| Bandara, B G S N R Total change: 65.20 | |   |
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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 |
| 1319 | 1143 | 1.00 | 3 | 0.12 | 40 | 4.80 | |
|  Sathsindu, W M Minura | | | 1522 | SRI | 0.00 | 1 | -0.09 | 40 | -3.60 | |  Akuratiya, A G Hansadie Aradhya | | | 1222 | SRI | 0.00 | 1 | -0.39 | 40 | -15.60 | | | Sugathadasa, Sasiru Hansana | | | 1212 | SRI | 1.00 | 1 | 0.60 | 40 | 24.00 | |
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 |
| 1222 | 1143 | 1.50 | 5 | -0.49 | 40 | -19.60 | |
| | Labunahewage, Dulein Bimsath | | | 1271 | SRI | 0.00 | 1 | -0.33 | 40 | -13.20 | | | Bhavithran, S | | | 1107 | SRI | 1.00 | 1 | 0.45 | 40 | 18.00 | | | Galkotuwa, K A R G W D R B G | | | 1382 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Gonawala, B V S D D | | | 1154 | SRI | 0.50 | 1 | 0.02 | 40 | 0.80 | | | Kodithuwakku, K A Sadula Kausara | | | 1196 | SRI | 0.00 | 1 | -0.43 | 40 | -17.20 | |
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) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1330 | 1143 | 0.00 | 2 | -0.54 | 40 | -21.60 | |
| | Wickramarathne, P W G Gaveshi | | | 1434 | SRI | 0.00 | 1 | -0.15 | 40 | -6.00 | | | De Silva, B P Chanthuli Thanishka | | | 1225 | SRI | 0.00 | 1 | -0.39 | 40 | -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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1279 | 1143 | 4.50 | 6 | 2.54 | 40 | 101.60 | |
| | Pathmasiri, R D Isuru Saranga | | | 1354 | SRI | 1.00 | 1 | 0.77 | 40 | 30.80 | | | Rajawasala, R U D Janith Dulmina | | | 1417 | SRI | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Wadduwage, Thamindu Upeksha | | | 1218 | SRI | 1.00 | 1 | 0.60 | 40 | 24.00 | | | De Silva, Thisum Laknuja | | | 1200 | SRI | 0.50 | 1 | 0.08 | 40 | 3.20 | | | Dissanayake, D M Madushan Sameera | | | 1202 | SRI | 1.00 | 1 | 0.58 | 40 | 23.20 | | | Wijerathna, Vinuka Dihain | | | 1280 | SRI | 1.00 | 1 | 0.68 | 40 | 27.20 | |
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) | | |
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