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Individual Calculations February 2017 |
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| O`connor, Derek Total change: -25.00 | |   |
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| Berkeley Chess Club Championship | Berkeley, California | USA | 2016-10-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2010 | 2109 | 4.00 | 6 | 0.29 | 20 | 5.80 | |
|  Hakobyan, Sos | | | 1868 | USA | 1.00 | 1 | 0.20 | 20 | 4.00 | |  Jirasek, Ladia | | | 2171 | USA | 0.00 | 1 | -0.41 | 20 | -8.20 | | | Walder, Michael S | | | 2000 | USA | 0.50 | 1 | -0.15 | 20 | -3.00 | | | Kim, Isaiah | | | 1779 | USA | 1.00 | 1 | 0.12 | 20 | 2.40 | | | Gaffagan, Steven | | | 2015 | USA | 1.00 | 1 | 0.37 | 20 | 7.40 | | | Poehlmann, Roger M | | | 2226 | USA | 0.50 | 1 | 0.16 | 20 | 3.20 | |
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) | | | | 2017 New Year Open Championship | San Jose, California | USA | 2017-01-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2102 | 2116 | 1.50 | 3 | -0.08 | 20 | -1.60 | |
| | Tsegmed, Munkhchuluun | | wf | 2035 | MGL | 0.50 | 1 | -0.11 | 20 | -2.20 | | | Sevillano, Enrico | g | | 2454 | USA | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Kim, Isaiah | | | 1818 | USA | 1.00 | 1 | 0.15 | 20 | 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) | | | | BCS Weekender January | Berkeley, California | USA | 2017-01-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1792 | 2116 | 2.00 | 4 | -1.46 | 20 | -29.20 | |
| | Ai, Evan Zihao | | | 1716 * | USA | 0.50 | 1 | -0.42 | 20 | -8.40 | | | Kim, Isaiah | | | 1818 | USA | 0.50 | 1 | -0.35 | 20 | -7.00 | | | Palusa, Maurya | | | 1735 | USA | 1.00 | 1 | 0.09 | 20 | 1.80 | | | Padmanabhan, Karthik | | | 1899 | USA | 0.00 | 1 | -0.78 | 20 | -15.60 | | | * 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) | | |
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