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Individual Calculations March 2015 |
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| Ralphs, Nigel Total change: 10.60 | |   |
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| 2015 Welsh Winter Open | Penarth | WLS | 2015-01-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1919 | 1917 | 2.50 | 4 | 0.58 | 20 | 11.60 | |
|  Baruah, Bedanta | | | 1517 * | IND | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Whitehead, Mark A | | | 1985 | ENG | 0.50 | 1 | 0.09 | 20 | 1.80 | | | Kett, Tim | | | 2225 | WLS | 0.00 | 1 | -0.14 | 20 | -2.80 | | | James, Dai | | | 1950 | WLS | 1.00 | 1 | 0.55 | 20 | 11.00 | | | * 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) | | | | Bristol Winter Congress | Bristol | ENG | 2015-02-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2027 | 1917 | 1.00 | 3 | -0.05 | 20 | -1.00 | |
| | Krzyzanowski, Patryk | | | 2025 | POL | 0.00 | 1 | -0.35 | 20 | -7.00 | | | Bridge, Neil A | | | 2076 | ENG | 0.50 | 1 | 0.21 | 20 | 4.20 | | | Slade, Theodore | | | 1981 | ENG | 0.50 | 1 | 0.09 | 20 | 1.80 | |
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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