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Individual Calculations February 2018 |
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| Bullen, Alex Total change: 3.00 | |   |
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| South Wales New Year Open 2018 | Bridgend | WLS | 2018-01-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2047 | 2098 | 3.50 | 5 | 0.68 | 20 | 13.60 | |
|  Parry, Matthew | | | 1903 | WLS | 1.00 | 1 | 0.25 | 20 | 5.00 | |  Morcom, Huw | | | 1930 | WLS | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Ehsandar, Peter | | | 1987 | WLS | 1.00 | 1 | 0.35 | 20 | 7.00 | | | Blackburn, Jonathan L B | | | 2194 | WLS | 0.50 | 1 | 0.13 | 20 | 2.60 | | | Kett, Tim | | | 2223 | WLS | 0.00 | 1 | -0.33 | 20 | -6.60 | |
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) | | | | 2017/18 4NCL Division 2 Rounds 3-4 | Solihull | ENG | 2018-01-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2122 | 2098 | 0.50 | 2 | -0.43 | 20 | -8.60 | |
| | Oyama, Akito | | | 2177 | ENG | 0.00 | 1 | -0.39 | 20 | -7.80 | | | Hutchinson, Norman A | | | 2067 | ENG | 0.50 | 1 | -0.04 | 20 | -0.80 | |
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) | | | | Welsh Chess Premier League 2017/18 Round 3 | Neath | WLS | 2018-01-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2023 | 2098 | 0.50 | 1 | -0.10 | 20 | -2.00 | |
| | Young, Alan | | | 2023 | WLS | 0.50 | 1 | -0.10 | 20 | -2.00 | |
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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