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Individual Calculations June 2023 |
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| Pathmasiri, R D Isuru Saranga Total change: -50.00 | |   |
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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 |
| 1232 | 1285 | 4.50 | 8 | -0.05 | 20 | -1.00 | |
|  Perera, Udari Dilrukshi | | | 1098 | SRI | 1.00 | 1 | 0.26 | 20 | 5.20 | |  Sathsindu, W M Minura | | | 1522 | SRI | 0.00 | 1 | -0.20 | 20 | -4.00 | | | Peiris, P Gimshan Sathsara | | | 1057 | SRI | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Hidurangala, H D Binuri Dulanga | | | 1088 | SRI | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Nirwan, G L S P | | | 1136 | SRI | 1.00 | 1 | 0.30 | 20 | 6.00 | | | Nanayakkara, Sanuk | | | 1412 | SRI | 0.00 | 1 | -0.33 | 20 | -6.60 | | | Kularathne, K A Praveen | | | 1121 | SRI | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Hettiarachchi, Jeewantha Aloka | | | 1420 | SRI | 0.00 | 1 | -0.32 | 20 | -6.40 | |
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 |
| 1255 | 1285 | 3.00 | 5 | 0.29 | 20 | 5.80 | |
| | Kannangara, Ranul Insitha | | | 1079 | SRI | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Thamilkkumaran, Kannan | | | 1068 | SRI | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Amarathunga, Kosala Sandeepa Cham | | | 1557 | SRI | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Perera, Sachith Lakshan | | | 1146 | SRI | 1.00 | 1 | 0.31 | 20 | 6.20 | | | Nethsara, R Navod | | | 1424 | SRI | 0.00 | 1 | -0.31 | 20 | -6.20 | |
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 |
| 1131 | 1354 | 2.00 | 5 | -1.90 | 20 | -38.00 | |
| | Bandara, B G S N R | | | 1143 | SRI | 0.00 | 1 | -0.77 | 20 | -15.40 | | | Gomes, J Vaneesha Oshini | | | 1063 | SRI | 0.00 | 1 | -0.85 | 20 | -17.00 | | | Nanayakkara, N W P K W | | | 1088 | SRI | 1.00 | 1 | 0.18 | 20 | 3.60 | | | Kannangara, Ranul Insitha | | | 1156 | SRI | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Atulugamage, Saniru Lohan | | | 1205 | SRI | 0.00 | 1 | -0.70 | 20 | -14.00 | |
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) | | | | 1st Rahulians International Chess Festival 2023 | Matara | SRI | 2023-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1260 | 1354 | 1.00 | 3 | -0.84 | 20 | -16.80 | |
| | Sooriyaarachchi, B K S S | | | 1019 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | De Silva, Osheen | | | 1676 | SRI | 0.00 | 1 | -0.13 | 20 | -2.60 | | | Sethumsa, R B Hasadi | | | 1086 | SRI | 0.00 | 1 | -0.83 | 20 | -16.60 | |
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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