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Individual Calculations June 2023 |
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| Newansa, M Esandi Total change: -31.80 | |   |
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| Sri Lanka Women's National Chess Championship 2023 | Colombo | SRI | 2023-03-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1490 | 1581 | 6.50 | 13 | -1.45 | 20 | -29.00 | |
|  Ranasinghe, S D | | wm | 1727 | SRI | 0.50 | 1 | 0.20 | 20 | 4.00 | | | Akuratiya, A G Javindi Avarjana | | | 1271 | SRI | 1.00 | 1 | 0.14 | 20 | 2.80 | |  Tharushi, T H D Niklesha | | wc | 1574 | SRI | 0.50 | 1 | -0.01 | 20 | -0.20 | | | Abeysinghe, H M H Janandani | | | 1425 | SRI | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Sanudula, K M Dahamdi | | wc | 1732 | SRI | 0.50 | 1 | 0.20 | 20 | 4.00 | | | Jayaweera, Sayuni Gihansa | | wc | 1641 | SRI | 0.50 | 1 | 0.08 | 20 | 1.60 | | | Wijesuriya, G P Y | | wc | 1511 | SRI | 0.00 | 1 | -0.60 | 20 | -12.00 | | | Yapa Bandara, Chamodya | | | 1455 | SRI | 1.00 | 1 | 0.33 | 20 | 6.60 | | | Ramanayake, Nemindi Linaya | | | 1400 | SRI | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Pallie, Ehsha Mishela | | wc | 1536 | SRI | 0.00 | 1 | -0.56 | 20 | -11.20 | | | Chamathka, W A Chethani | | | 1317 | SRI | 0.50 | 1 | -0.32 | 20 | -6.40 | | | Ranganath, Tharuli Vihasna | | | 1282 | SRI | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Udagedara, Sandali Kanishka | | | 1498 | SRI | 0.50 | 1 | -0.11 | 20 | -2.20 | |
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) | | | | Sri Lanka National Youth Chess Championship 2023 - Under 14Yrs Girls | Colombo | SRI | 2023-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1253 | 1581 | 6.00 | 7 | -0.05 | 20 | -1.00 | |
| | Dabarera, W Michelle Bhagya | | | 1181 * | SRI | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Liyanage, D Sathini Disathna | | | 1128 | SRI | 1.00 | 1 | 0.06 | 20 | 1.20 | | | Fernando, B Thishya Methsandi | | | 1240 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Ranganath, Tharuli Vihasna | | | 1282 | SRI | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Mudalige, S M I Umandi | | | 1247 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Gunasekara, K P K Hesara | | | 1296 | SRI | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Rathnayake, R M Dulinma Hemalni | | | 1398 | SRI | 0.50 | 1 | -0.24 | 20 | -4.80 | | | * 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) | | | | 5th SSC Open International Rating Chess Championship 2023 | Matara | SRI | 2023-04-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1337 | 1581 | 5.00 | 7 | -0.36 | 20 | -7.20 | |
| | Abayasinghe, Sehath | | | 1181 * | SRI | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Yumeth, K L A Venuka | | | 1126 | SRI | 1.00 | 1 | 0.06 | 20 | 1.20 | | | Kaumina, M Yashika | | | 1295 | SRI | 1.00 | 1 | 0.16 | 20 | 3.20 | | | Gunawardena, Ramiru Sithika | | | 1275 | SRI | 1.00 | 1 | 0.14 | 20 | 2.80 | | | Bandara, Dhanushka | | | 1853 | SRI | 0.00 | 1 | -0.17 | 20 | -3.40 | | | Wickramaarachchi, Nayanaka Insara | | | 1384 | SRI | 0.50 | 1 | -0.25 | 20 | -5.00 | | | Fernando, W K B Thumula Theekshan | | | 1243 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | * 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) | | | | Colombo International Chess Festival 2023 | Colombo | SRI | 2023-05-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1337 | 1537 | 6.00 | 8 | 0.27 | 20 | 5.40 | |
| | Karunasena, H G M K Saheli Onaya | | | 1122 | SRI | 1.00 | 1 | 0.07 | 20 | 1.40 | | | Sampath, H K G | | | 1137 * | SRI | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Pathirana, W P Keshara Viraj | | | 1211 | SRI | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Dissanayake, D M Madushan Sameera | | | 1202 | SRI | 1.00 | 1 | 0.12 | 20 | 2.40 | | | De Silva, Osheen | | | 1676 | SRI | 0.50 | 1 | 0.19 | 20 | 3.80 | | | Jayaweera, Y | | | 1711 | SRI | 0.00 | 1 | -0.27 | 20 | -5.40 | | | Manuwaruna, Sethun Neththaru | | | 1345 | SRI | 1.00 | 1 | 0.25 | 20 | 5.00 | | | Kaumina, M Yashika | | | 1295 | SRI | 1.00 | 1 | 0.20 | 20 | 4.00 | | | * 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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