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Individual Calculations June 2017 |
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| O`connor, Derek Total change: 30.60 | |   |
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| Spring 2017 Tuesday Night Marathon | San Francisco, California | USA | 2017-03-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 2094 | 6.50 | 8 | 1.28 | 20 | 25.60 | |
|  Malykin, Erika | | | 1694 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Andries, W Craig | | | 1870 | USA | 1.00 | 1 | 0.22 | 20 | 4.40 | | | Uzzaman, Ashik | | | 1936 | USA | 1.00 | 1 | 0.29 | 20 | 5.80 | | | Ismakov, Arthur | | | 2064 | USA | 0.00 | 1 | -0.54 | 20 | -10.80 | | | Cheng, Alfonso | | | 1859 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | | | Kim, Isaiah | | | 1915 | USA | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Tsodikova, Natalia | | | 2146 | USA | 1.00 | 1 | 0.57 | 20 | 11.40 | | | Shaw, Tenzing | | | 2231 | USA | 0.50 | 1 | 0.18 | 20 | 3.60 | | | * 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) | | | | GM Koltanowski Memorial | Berkeley, California | USA | 2017-03-31 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1879 | 2094 | 5.00 | 6 | 0.57 | 20 | 11.40 | |
| | Yanofsky, Kevin | | | 1694 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Erdenebileg, Erkhe | | | 1694 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Acosta, Anthony Ro | | | 1794 | USA | 1.00 | 1 | 0.15 | 20 | 3.00 | | | Jirasek, Ladia | f | | 2257 | USA | 0.50 | 1 | 0.22 | 20 | 4.40 | | | Wang, Michael J | | | 1893 | USA | 1.00 | 1 | 0.24 | 20 | 4.80 | | | Sevall, Jacob Came | | | 1944 | GER | 1.00 | 1 | 0.30 | 20 | 6.00 | | | * 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) | | | | Berkeley Weekender | Berkeley, California | USA | 2017-05-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1982 | 2175 | 3.00 | 4 | 0.08 | 20 | 1.60 | |
| | Kane, Kevin | | | 2019 | USA | 0.50 | 1 | -0.21 | 20 | -4.20 | | | Kondakov, Adrian | | | 1775 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Walder, Michael S | | | 1999 | USA | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Eren, Baran | | | 2134 | TUR | 0.50 | 1 | -0.06 | 20 | -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) | | | | Best of the West Class Championship | Santa Clara, Callifornia | USA | 2017-05-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1964 | 2175 | 4.00 | 6 | -0.40 | 20 | -8.00 | |
| | Liu, Kimberly | | | 1775 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Dobrynin, Dmitri V | | | 1775 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Khachiyan, Melikset | g | | 2530 | USA | 0.00 | 1 | -0.11 | 20 | -2.20 | | | Walder, Michael S | | | 1999 | USA | 1.00 | 1 | 0.27 | 20 | 5.40 | | | Wei, Jeffrey | | | 1931 | USA | 0.50 | 1 | -0.30 | 20 | -6.00 | | | Wang, Henry | | | 1775 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | * 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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