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Individual Calculations February 2019 |
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| Ponnamperuma, Weraka Vasath Total change: 75.20 | |   |
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| Sri Lanka National Youth Chess Championship 2018 Under - 13 years | Colombo | SRI | 2018-12-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1246 | 1390 | 5.50 | 8 | 0.12 | 40 | 4.80 | |
|  Senavirathna, U G D H B | | | 1078 | SRI | 0.50 | 1 | -0.36 | 40 | -14.40 | |  Baratha Yomal, N W A | | | 1071 | SRI | 1.00 | 1 | 0.13 | 40 | 5.20 | | | Hemachandra, D K S Sethmika | | | 1131 | SRI | 1.00 | 1 | 0.18 | 40 | 7.20 | | | Bandara, Viduna Lewke | | | 1141 | SRI | 1.00 | 1 | 0.19 | 40 | 7.60 | | | Piyumantha, M Thisal Manjith | | | 1589 | SRI | 0.00 | 1 | -0.24 | 40 | -9.60 | | | Bandara, W M Malitha | | | 1260 | SRI | 1.00 | 1 | 0.32 | 40 | 12.80 | | | Liyanage, Kusalvin | | | 1208 | SRI | 1.00 | 1 | 0.26 | 40 | 10.40 | | | Withanarachchi, W A P I | | | 1492 | SRI | 0.00 | 1 | -0.36 | 40 | -14.40 | |
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) | | | | 7th Kaluthara Chess Festival 2019 | Kaluthara | SRI | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1454 | 1365 | 5.00 | 8 | 1.76 | 40 | 70.40 | |
| | Liyanapathirana, Pasan Vindula | | | 1765 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Indisa, E M Tiran | | | 1029 | SRI | 1.00 | 1 | 0.12 | 40 | 4.80 | | | Morais, Sanuka Jude Vidunitha | | | 1130 | SRI | 1.00 | 1 | 0.21 | 40 | 8.40 | | | Kodithuwakku, Lisara | | | 1702 | SRI | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Gunawardana, Indrakeela K D Udde | | | 1100 | SRI | 1.00 | 1 | 0.18 | 40 | 7.20 | | | Sooriyaarachchi, Isuru Madusha | | | 1566 | SRI | 1.00 | 1 | 0.76 | 40 | 30.40 | | | Nethmina, S A Indura | | | 1572 | SRI | 1.00 | 1 | 0.77 | 40 | 30.80 | | | Lamahewa, S | | | 1765 * | SRI | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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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