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Individual Calculations February 2019 |
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| Gamarathne, Oneth Total change: 130.80 | |   |
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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 |
| 1311 | 1256 | 4.50 | 7 | 1.44 | 40 | 57.60 | |
|  Lokupothagama, L P S R | | | 1044 | SRI | 1.00 | 1 | 0.23 | 40 | 9.20 | |  Perera, Sehath Sanvidu R A D | | | 1104 | SRI | 1.00 | 1 | 0.30 | 40 | 12.00 | | | Withanarachchi, W A P I | | | 1492 | SRI | 0.00 | 1 | -0.20 | 40 | -8.00 | | | Maithripala, W D P N | | | 1109 | SRI | 1.00 | 1 | 0.30 | 40 | 12.00 | | | Akash, P A Oditha | | | 1414 | SRI | 1.00 | 1 | 0.71 | 40 | 28.40 | | | Mathes Arachchi, Bhanila M | | | 1441 | SRI | 0.50 | 1 | 0.24 | 40 | 9.60 | | | Kiriella, K G T S D | | | 1570 | SRI | 0.00 | 1 | -0.14 | 40 | -5.60 | |
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) | | | | 7th Kaluthara Chess Festival 2019 | Kaluthara | SRI | 2019-01-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1484 | 1256 | 3.50 | 7 | 1.83 | 40 | 73.20 | |
| | Wettasinha, Vasanta | | | 1622 | SRI | 1.00 | 1 | 0.90 | 40 | 36.00 | | | De Silva, Shelani | | | 1583 | SRI | 0.50 | 1 | 0.37 | 40 | 14.80 | | | Weerakoon, D D P | | | 1627 | SRI | 0.50 | 1 | 0.40 | 40 | 16.00 | | | Akasha, J P Vihanga | | | 1440 | SRI | 0.50 | 1 | 0.24 | 40 | 9.60 | | | Morais, Sanithu Leander Pamudith | | | 1507 | SRI | 0.50 | 1 | 0.31 | 40 | 12.40 | | | Lakmal, M A C | | | 1503 | SRI | 0.00 | 1 | -0.19 | 40 | -7.60 | | | Weerawardana, Ushan Thashitha K | | | 1103 | SRI | 0.50 | 1 | -0.20 | 40 | -8.00 | |
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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