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Individual Calculations November 2009 |
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| Treger, Yefim Total change: 24.75 | |   |
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| Marshall CC Tuesday FIDE Futurity | New York, NY | USA | 2009-07-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2041 | 2194 | 7.50 | 9 | 1.20 | 15 | 18.00 | |
|  Rabin, Evan Z | | | 2026 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | |  Ostrovskiy, Aleksandr | c | | 2089 | USA | 1.00 | 1 | 0.36 | 15 | 5.40 | | | Frumkin, Edward A | | | 2032 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Farber, Nelson M | | | 2000 | USA | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Berg, George P | | | 2049 | USA | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Farber, Nelson M | | | 2000 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Berg, George P | | | 2049 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Ostrovskiy, Aleksandr | c | | 2089 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Frumkin, Edward A | | | 2032 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | |
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) | | | | 2009 US Senior Open | Tulsa, Oklahoma | USA | 2009-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2268 | 2198 | 1.50 | 3 | 0.21 | 15 | 3.15 | |
| | Rogalski, Tim | | | 2046 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Markzon, Gregory | f | | 2212 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Gulko, Boris | g | | 2546 | USA | 0.50 | 1 | 0.39 | 15 | 5.85 | |
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) | | | | FIDE Thurdays | New York, NY | USA | 2009-09-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2121 | 2198 | 1.50 | 3 | -0.30 | 15 | -4.50 | |
| | Hoffmann, Asa | f | | 2277 | USA | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Frumkin, Edward A | | | 2021 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Widmaier, Marc | | | 2065 | USA | 0.00 | 1 | -0.68 | 15 | -10.20 | |
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) | | | | New York October Open | New York, New York | USA | 2009-10-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2019 | 2198 | 2.00 | 2 | 0.54 | 15 | 8.10 | |
| | Paciulli, Frank R | | | 1947 | USA | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Barsky, Sam | | | 2091 | USA | 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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