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Individual Calculations October 2013 |
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| Katz, Benjamin J Total change: -19.65 | |   |
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| 135th Annual New York State Championship | Albany, New York | USA | 2013-08-30 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2017 | 2161 | 1.50 | 4 | -1.27 | 15 | -19.05 | |
|  Adamec, Carl | | | 2043 | USA | 0.00 | 1 | -0.66 | 15 | -9.90 | |  Rofrano, Joshua | | | 2012 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Winter, Curtis A | | | 1964 | USA | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Ellenbogen, Michael | | | 2047 | USA | 0.00 | 1 | -0.66 | 15 | -9.90 | |
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) | | | | 2013 MCC September Open Grand Prix | New York, New York | USA | 2013-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1947 | 2161 | 1.50 | 2 | -0.04 | 15 | -0.60 | |
| | Kopiecki, Edward | | | 1939 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Scott, Harold | | | 1955 | USA | 0.50 | 1 | -0.26 | 15 | -3.90 | |
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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