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Individual Calculations September 2017 |
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| Wells, Jonathan C Total change: -41.00 | |   |
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| 104th British Championships Weekend Open | Llandudno | ENG | 2017-07-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1892 | 2037 | 1.50 | 4 | -1.27 | 20 | -25.40 | |
|  Tilston, Jamie D | | | 1861 | ENG | 0.50 | 1 | -0.23 | 20 | -4.60 | |  Patrick, David A | | | 1879 | ENG | 0.00 | 1 | -0.71 | 20 | -14.20 | | | Paul, Nathanael | | | 1871 | ENG | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Bansal, Rohan | | | 1956 | ENG | 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) | | | | 104th British Championships Morning Open | Llandudno | ENG | 2017-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1918 | 2037 | 3.00 | 5 | -0.28 | 20 | -5.60 | |
| | Openshaw, David K | | | 1859 | ENG | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Ashworth, Michael J | | | 1946 | ENG | 0.50 | 1 | -0.12 | 20 | -2.40 | | | Whitehead, Mark A | | | 1917 | ENG | 1.00 | 1 | 0.34 | 20 | 6.80 | | | Alkhateeb, Taher | c | | 2015 | KUW | 0.00 | 1 | -0.53 | 20 | -10.60 | | | Kennedy, Craig | | | 1855 | SCO | 0.50 | 1 | -0.24 | 20 | -4.80 | |
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) | | | | 104th British Championships Under 2050 | Llandudno | ENG | 2017-07-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1793 | 2037 | 3.50 | 5 | -0.50 | 20 | -10.00 | |
| | McLaren, Charlie | | | 1795 | ENG | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Paul, Nathanael | | | 1871 | ENG | 0.50 | 1 | -0.22 | 20 | -4.40 | | | Han, Yichen | | | 1808 | NED | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Nayak, Raghav | | | 1737 | ENG | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Brown, Geoffrey M | | | 1756 | ENG | 0.50 | 1 | -0.34 | 20 | -6.80 | |
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) | | |
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