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Individual Calculations July 2010 |
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| Roberson, Peter T Total change: 25.20 | |   |
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| Four Nations Chess League (4NCL) | Various | ENG | 2009-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2181 | 2221 | 5.00 | 8 | 0.56 | 15 | 8.40 | |
|  Shaw, Peter | | | 2156 | ENG | 0.50 | 1 | -0.09 | 15 | -1.35 | |  O`Toole, George E | | | 2146 | ENG | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Padilla, Pablo | | | 2169 | ESP | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Lock, Gavin R | | | 2188 | ENG | 0.50 | 1 | -0.05 | 15 | -0.75 | | | Talsma, Paul A | | | 2252 | NED | 0.50 | 1 | 0.04 | 15 | 0.60 | | | McEwan, Ken B | | | 2142 | SCO | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Sugden, John N | | | 2235 | ENG | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Jackson, Sheila | | wg | 2160 | ENG | 1.00 | 1 | 0.42 | 15 | 6.30 | |
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) | | | | Surrey Congress - Open | Cheam | ENG | 2010-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2138 | 2256 | 5.00 | 6 | 1.12 | 15 | 16.80 | |
| | Fraser-Mitchell, Jeremy N | | | 1993 | ENG | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Shepley, Julien M | | | 2022 | ENG | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Lalic, Susan K | m | wg | 2298 | ENG | 0.50 | 1 | 0.06 | 15 | 0.90 | | | Punnett, Alan K | | | 2094 | ENG | 0.50 | 1 | -0.21 | 15 | -3.15 | | | Martyn, Rafe | f | | 2290 | ENG | 1.00 | 1 | 0.55 | 15 | 8.25 | | | Wheldon, Philip | | | 2133 | ENG | 1.00 | 1 | 0.33 | 15 | 4.95 | |
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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