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Individual Calculations March 2010 |
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| Bonin, Jay Total change: -12.00 | |   |
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| 2009 Queens Chess Club Championship | Jamaica, New York | USA | 2009-10-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2055 | 2371 | 1.00 | 3 | -1.60 | 10 | -16.00 | |
|  Kleinman, Jay | | | 2033 | USA | 0.00 | 1 | -0.88 | 10 | -8.80 | | | Felber, Joseph J | | | 2054 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Ryba, Nicholas | | | 2077 | USA | 0.00 | 1 | -0.85 | 10 | -8.50 | |
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) | | | | Edward Lasker Memorial and 93rd Annual Marshall Chess Club Championship | New York, New York | USA | 2009-12-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2376 | 2370 | 4.00 | 8 | 0.25 | 10 | 2.50 | |
| | Farber, Nelson M | | | 1979 | USA | 1.00 | 1 | 0.09 | 10 | 0.90 | |  Fedorowicz, John P | g | | 2458 | USA | 0.50 | 1 | 0.12 | 10 | 1.20 | | | Yudasin, Leonid G | g | | 2536 | ISR | 1.00 | 1 | 0.72 | 10 | 7.20 | | | Rohde, Michael A | g | | 2458 | USA | 0.00 | 1 | -0.38 | 10 | -3.80 | | | Hess, Robert L | g | | 2572 | USA | 0.00 | 1 | -0.24 | 10 | -2.40 | | | Rabin, Evan Z | | | 2021 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Babaev, Rashad | g | | 2535 | AZE | 0.00 | 1 | -0.28 | 10 | -2.80 | | | Krush, Irina | m | wg | 2451 | USA | 0.50 | 1 | 0.11 | 10 | 1.10 | |
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) | | | | 2010 Happy New Year Open | New york, New York | USA | 2010-01-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2126 | 2346 | 1.50 | 3 | -0.84 | 10 | -8.40 | |
| | Guevara, Robert N | | | 2085 | USA | 0.50 | 1 | -0.32 | 10 | -3.20 | | | Szuper, Paul | | | 2192 | USA | 1.00 | 1 | 0.29 | 10 | 2.90 | | | Sturt, Raven M | | | 2100 | USA | 0.00 | 1 | -0.81 | 10 | -8.10 | |
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) | | | | 42nd Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2010-01-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2202 | 2346 | 3.00 | 3 | 0.99 | 10 | 9.90 | |
| | Bhatia, Kanwal K | | | 2062 | ENG | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Vibbert, Sean | | | 2089 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Krush, Irina | m | wg | 2455 | USA | 1.00 | 1 | 0.65 | 10 | 6.50 | |
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) | | |
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