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Individual Calculations February 2023 |
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| Nawanjana, R A Thaweesha Total change: 4.56 | |   |
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| CFSL Golden Jubilee International Rating Chess Tournament 2022 | Colombo | SRI | 2022-11-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1318 | 1162 | 3.50 | 8 | 0.77 | 38 | 29.26 | |
|  Laksiri, A A Kavishka Gimshan | | | 1475 | SRI | 0.00 | 1 | -0.14 | 38 | -5.32 | | | Fernando, Mayon Dinuth Mindula | | | 1138 | SRI | 0.00 | 1 | -0.53 | 38 | -20.14 | |  Bimansa, D G Jayandi | | | 1128 | SRI | 0.50 | 1 | -0.05 | 38 | -1.90 | | | Fernando, Diyon Senuth Randilu | | | 1072 | SRI | 1.00 | 1 | 0.38 | 38 | 14.44 | | | Amarathunga, Piyumi Uthpala | | | 1165 | SRI | 1.00 | 1 | 0.50 | 38 | 19.00 | | | Sivathanujan, S | | | 1729 | SRI | 0.00 | 1 | -0.02 | 38 | -0.76 | | | Amarathunga, Kosala Sandeepa Cham | | | 1389 | SRI | 1.00 | 1 | 0.79 | 38 | 30.02 | | | Gnanaseelan, Jude Dorison | | | 1445 | SRI | 0.00 | 1 | -0.16 | 38 | -6.08 | |
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) | | | | Ethugalpura Open International Rating Chess Championships 2022 | Kurunegala | SRI | 2022-12-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1281 | 1162 | 1.00 | 3 | -0.08 | 38 | -3.04 | |
| | Perera, Sachith Lakshan | | | 1032 | SRI | 1.00 | 1 | 0.32 | 38 | 12.16 | | | Dissanayake, D M S L | | | 1456 | SRI | 0.00 | 1 | -0.15 | 38 | -5.70 | | | Yapabandara, G G P D | | | 1355 | SRI | 0.00 | 1 | -0.25 | 38 | -9.50 | |
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) | | | | Kandy Open International Rating Chess Championships 2022 | Kandy | SRI | 2022-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1501 | 1162 | 0.00 | 1 | -0.12 | 38 | -4.56 | |
| | Mapa, M M W H | | | 1501 | SRI | 0.00 | 1 | -0.12 | 38 | -4.56 | |
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 District Youth Chess Championships 2023 - Under 18 | Dehiwala | SRI | 2023-01-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1178 | 1162 | 1.50 | 3 | 0.06 | 38 | 2.28 | |
| | Hendavitharana, D S | | | 1214 | SRI | 0.00 | 1 | -0.43 | 38 | -16.34 | | | Abeysekera, Bises Oneja | | | 1115 | SRI | 1.00 | 1 | 0.43 | 38 | 16.34 | | | Sandesh, Sithika | | | 1206 | SRI | 0.50 | 1 | 0.06 | 38 | 2.28 | |
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) | | | | Kaluthara International Chess Festival 2023 | Kaluthara | SRI | 2023-01-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1436 | 1162 | 0.00 | 3 | -0.51 | 38 | -19.38 | |
| | Gunaweera, Geenuka Kavinu | | | 1464 | SRI | 0.00 | 1 | -0.15 | 38 | -5.70 | | | Gnanaseelan, Jude Dorison | | | 1445 | SRI | 0.00 | 1 | -0.16 | 38 | -6.08 | | | Herath, H M S S A | | | 1399 | SRI | 0.00 | 1 | -0.20 | 38 | -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) | | |
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