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Individual Calculations September 2010 |
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| Tuhrim, Richard J Total change: 31.50 | |   |
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| 38th Annual World Open - Open Section | King of Prussia, Pennsylvania | USA | 2010-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2288 | 2101 | 2.50 | 8 | 0.34 | 15 | 5.10 | |
|  Bercys, Salvijus | m | | 2427 | USA | 0.50 | 1 | 0.37 | 15 | 5.55 | |  Adamson, Robby | f | | 2328 | USA | 0.50 | 1 | 0.29 | 15 | 4.35 | | | Zierk, Steven C | f | | 2377 | USA | 0.00 | 1 | -0.17 | 15 | -2.55 | | | Lee, Michael | f | | 2391 | USA | 0.50 | 1 | 0.34 | 15 | 5.10 | | | Thaler, Michael | | | 2253 | USA | 0.50 | 1 | 0.20 | 15 | 3.00 | | | Henry, Liam | | | 2187 | CAN | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Perez, Robert M | | | 2212 | USA | 0.00 | 1 | -0.35 | 15 | -5.25 | | | Privman, Boris | f | | 2128 | USA | 0.50 | 1 | 0.04 | 15 | 0.60 | |
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) | | | | Marshall July Grand Prix | New York, New York | USA | 2010-07-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2222 | 2101 | 2.00 | 3 | 0.95 | 15 | 14.25 | |
| | Sturt, Raven M | | | 2173 | USA | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Sarkar, Justin | m | | 2387 | USA | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Kopiecki, Edward P | | | 2105 | 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) | | | | 15th Annual Bradley Open | Windsor Locks, Connecticut | USA | 2010-07-23 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2176 | 2101 | 2.50 | 4 | 0.84 | 15 | 12.60 | |
| | Helfst, Matt | | | 1933 | USA | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Castaneda, Andres | | | 2141 | USA | 0.50 | 1 | 0.06 | 15 | 0.90 | | | Goldenberg, Ryan D | | | 2190 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Hungaski, Robert A | m | | 2438 | USA | 0.50 | 1 | 0.38 | 15 | 5.70 | |
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) | | | | Not the US Open Grand Prix | New York, New York | USA | 2010-08-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1949 | 2101 | 0.00 | 1 | -0.70 | 15 | -10.50 | |
| | Paciulli, Frank R | | | 1949 | USA | 0.00 | 1 | -0.70 | 15 | -10.50 | |
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) | | | | 40th Annual Continental Open | Sturbridge, Massachusetts | USA | 2010-08-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2204 | 2101 | 3.00 | 6 | 0.67 | 15 | 10.05 | |
| | Kudrin, Sergey | g | | 2501 * | USA | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Plotkin, David A | | | 2110 | USA | 0.50 | 1 | 0.01 | 15 | 0.15 | | | Barsky, Sam Alex | | | 2072 | USA | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Kelleher, William | f | | 2355 | USA | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Kis, Lorand Bela | | | 2124 | USA | 1.00 | 1 | 0.53 | 15 | 7.95 | | | Xu, Grant Y | | | 2061 | USA | 0.50 | 1 | -0.06 | 15 | -0.90 | | | * 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) | | |
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