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Individual Calculations September 2009 |
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| Brown, Martin Total change: 10.90 | |   |
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| South Wales International Open | Pontypridd | WLS | 2009-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2190 | 2074 | 3.00 | 7 | 0.31 | 25 | 7.75 | |
|  Arkell, Keith C | g | | 2474 * | ENG | 0.00 | 1 | -0.08 | 25 | -2.00 | |  Fathallah, Joe | | | 1943 | WLS | 0.50 | 1 | -0.18 | 25 | -4.50 | | | Tew, Paul | | | 2056 | WLS | 1.00 | 1 | 0.47 | 25 | 11.75 | | | Miezis, Normunds | g | | 2474 * | LAT | 0.00 | 1 | -0.08 | 25 | -2.00 | | | Jain, Akash | | | 2012 | ENG | 1.00 | 1 | 0.41 | 25 | 10.25 | | | Marusenko, Petr | m | | 2323 | UKR | 0.00 | 1 | -0.19 | 25 | -4.75 | | | Josse, Mark | | | 2045 | ENG | 0.50 | 1 | -0.04 | 25 | -1.00 | | | * 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) | | | NOTE: K factor changed | | British U16 Championships | Torquay | ENG | 2009-07-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1906 | 2074 | 4.50 | 6 | 0.21 | 15 | 3.15 | |
| | Sivakumar, Athman | | | 1818 | ENG | 0.50 | 1 | -0.31 | 15 | -4.65 | | | Archer-Lock, Adrian | | | 1856 | ENG | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Sanders, Isaac B | | | 1855 | ENG | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Foster, James M | | | 1867 | ENG | 0.50 | 1 | -0.27 | 15 | -4.05 | | | Jones, Victor G L | | | 2076 | ENG | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Iyengar, Ilya | | | 1963 | ENG | 1.00 | 1 | 0.35 | 15 | 5.25 | |
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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