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Individual Calculations January 2009 |
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| Bonin, Jay Total change: 7.60 | |   |
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| Edward Lasker Memorial and 92nd Annual Marshall Chess Club Championship | New York, New York | USA | 2008-10-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2326 | 2353 | 5.50 | 9 | 0.76 | 10 | 7.60 | |
|  Rabin, Evan Z | | | 2027 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | |  Margulis, Yevgeni | | | 2274 | USA | 1.00 | 1 | 0.39 | 10 | 3.90 | | | Sarkar, Justin | m | | 2451 | USA | 0.50 | 1 | 0.13 | 10 | 1.30 | | | Rohde, Michael A | g | | 2467 | USA | 0.50 | 1 | 0.16 | 10 | 1.60 | | | Kacheishvili, Giorgi | g | | 2572 | GEO | 0.00 | 1 | -0.22 | 10 | -2.20 | | | Pressman, Leif | | | 2055 | USA | 1.00 | 1 | 0.15 | 10 | 1.50 | | | Izoria, Zviad | g | | 2610 | GEO | 0.50 | 1 | 0.32 | 10 | 3.20 | | | Figler, Ilye | f | | 2322 | USA | 0.00 | 1 | -0.54 | 10 | -5.40 | | | Gaillard, Edward A | | | 2153 | USA | 1.00 | 1 | 0.24 | 10 | 2.40 | |
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) | | | | What-A-Turkey Open | New York, NY | USA | 2008-11-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2233 | 2353 | 2.00 | 3 | 0.06 | 10 | 0.60 | |
| | Szuper, Paul | | | 2168 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Guevara, Robert N | | | 2080 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Sarkar, Justin | m | | 2451 | USA | 0.00 | 1 | -0.37 | 10 | -3.70 | |
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) | | | | 39th Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2008-11-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2284 | 2353 | 3.50 | 6 | -0.06 | 10 | -0.60 | |
| | Thurlow, Ryan G | | | 2189 | USA | 1.00 | 1 | 0.28 | 10 | 2.80 | | | Shabalov, Alexander | g | | 2585 | USA | 0.00 | 1 | -0.21 | 10 | -2.10 | | | Shen, Victor C | | | 2123 | USA | 0.50 | 1 | -0.29 | 10 | -2.90 | | | Filipovich, David | | | 2197 | CAN | 1.00 | 1 | 0.29 | 10 | 2.90 | | | Heimann, Alexander C | | | 2248 | USA | 1.00 | 1 | 0.36 | 10 | 3.60 | | | Bartell, Thomas | f | | 2361 | USA | 0.00 | 1 | -0.49 | 10 | -4.90 | |
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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