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Individual Calculations January 2012 |
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| Kosteris, Dimitri Total change: -11.70 | |   |
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| First Annual Fall International Chess Festival | Dearborn, Michigan | USA | 2011-10-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2023 | 1827 | 0.50 | 2 | 0.01 | 15 | 0.15 | |
|  Finegold, Spencer | | | 2046 | USA | 0.00 | 1 | -0.22 | 15 | -3.30 | |  Cohen, Lawrence S | | | 1999 | USA | 0.50 | 1 | 0.23 | 15 | 3.45 | |
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) | | | | 2nd North American Amateur Closed - Section B | Skokie, Illinois | USA | 2011-11-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1709 | 1802 | 5.00 | 9 | -0.48 | 15 | -7.20 | |
| | Vitkauskas, Vytautas | | | 1699 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Paykin, David | | | 1755 | USA | 0.50 | 1 | -0.07 | 15 | -1.05 | | | Mercer Jr, Theodore | | | 1402 * | USA | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Richmond, M Bar | | | 1858 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | | | Cohen, Lawrence S | | | 1999 | USA | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Clark, Wayne D | | | 1653 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Rajendra, Anupama | | | 1519 | USA | 0.50 | 1 | -0.34 | 15 | -5.10 | | | Wainscott, Chris | | | 1653 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Girardo, Christopher | | | 1844 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | | | * 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) | | | | 2011 Illinois Class - Class A | Orland Park, Illinois | USA | 2011-12-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1945 | 1802 | 0.00 | 1 | -0.31 | 15 | -4.65 | |
| | Peng, David | | | 1945 | USA | 0.00 | 1 | -0.31 | 15 | -4.65 | |
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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