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Individual Calculations January 2011 |
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| Black Jr, James A Total change: 66.35 | |   |
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| Marshall CC FIDE Thursdays | New York, NY | USA | 2010-10-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2110 | 1963 | 2.00 | 4 | 0.74 | 25 | 18.50 | |
|  Scher, Edward | | | 2012 | USA | 0.00 | 1 | -0.43 | 25 | -10.75 | |  Waxman, Marian | | | 2040 | USA | 1.00 | 1 | 0.61 | 25 | 15.25 | | | Berg, George P | | | 2095 | USA | 1.00 | 1 | 0.68 | 25 | 17.00 | | | Hoffmann, Asa | f | | 2294 | USA | 0.00 | 1 | -0.12 | 25 | -3.00 | |
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 | | 2010 Marshall Chess Club Championship | New York, New York | USA | 2010-10-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2225 | 1963 | 4.50 | 8 | 2.92 | 15 | 43.80 | |
| | Sarkar, Justin | m | | 2363 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Kopiecki, Edward P | | | 2097 | USA | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Treger, Yefim | | | 2194 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Tom, George | | | 2034 | USA | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Naranja, Renato C | m | | 2258 | PHI | 1.00 | 1 | 0.85 | 15 | 12.75 | | | Figler, Ilye | m | | 2314 | USA | 1.00 | 1 | 0.89 | 15 | 13.35 | | | Aaron, Deepak | | | 2177 | USA | 0.50 | 1 | 0.27 | 15 | 4.05 | | | Lenderman, Aleksander | g | | 2363 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | * 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 | | 2010 Marshall November Grand Prix | New York, New York | USA | 2010-11-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2079 | 2023 | 2.00 | 3 | 0.73 | 15 | 10.95 | |
| | Kats, Alena | | | 2068 | USA | 1.00 | 1 | 0.56 | 15 | 8.40 | | | Pressman, Leif A | | | 2140 | USA | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Tom, George | | | 2030 | USA | 1.00 | 1 | 0.51 | 15 | 7.65 | |
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) | | | NOTE: K factor changed | | 41st Annual National Chess Congress | Philadelphia, Pennsylvania | USA | 2010-11-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2104 | 2023 | 1.50 | 5 | -0.46 | 15 | -6.90 | |
| | Shvartsman, Andrew N | c | | 2177 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Strenzwilk, Denis | | | 2005 | USA | 0.00 | 1 | -0.53 | 15 | -7.95 | | | Daly, Troy | | | 2143 | USA | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Weser, Adam | | | 2113 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Colas, Joshua | | | 2084 | USA | 0.50 | 1 | 0.08 | 15 | 1.20 | |
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) | | |
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