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Individual Calculations April 2018 |
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| Cortinas, Martin Total change: 80.40 | |   |
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| Winter 2018 Tuesday Night Marathon | San Francisco, California | USA | 2018-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1842 | 1612 | 3.00 | 7 | 1.28 | 40 | 51.20 | |
|  Walder, Michael | | | 1976 | USA | 1.00 | 1 | 0.90 | 40 | 36.00 | |  Thornally, Frank | f | | 2012 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Argo, Guy | | | 1930 | USA | 1.00 | 1 | 0.87 | 40 | 34.80 | | | Ivanov, Aleksandr | | | 2012 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Poling, Scott | | | 1772 | USA | 0.00 | 1 | -0.29 | 40 | -11.60 | | | McEnroe, Glenn | | | 1553 | USA | 0.00 | 1 | -0.58 | 40 | -23.20 | | | Touset, Stephen | | | 1639 | USA | 1.00 | 1 | 0.54 | 40 | 21.60 | | | * 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) | | | | 2018 IM John Grefe Marathon | Berkeley, California | USA | 2018-01-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1816 | 1612 | 2.50 | 7 | 0.68 | 40 | 27.20 | |
| | Walder, Michael | | | 1976 | USA | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Jensen, Christian | | | 1793 | USA | 0.50 | 1 | 0.24 | 40 | 9.60 | | | Lesquillier, Walter | | | 1669 | USA | 0.50 | 1 | 0.08 | 40 | 3.20 | | | Acosta, Anthony | | | 1707 | USA | 1.00 | 1 | 0.63 | 40 | 25.20 | | | Lewis, Edward | | | 1881 | USA | 0.00 | 1 | -0.17 | 40 | -6.80 | | | Poehlmann, Roger | | | 2012 * | USA | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Paetz, Mark | | | 1672 | USA | 0.50 | 1 | 0.08 | 40 | 3.20 | | | * 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) | | | | Cal Chess Senior State Championship | Berkeley, California | USA | 2018-03-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1914 | 1612 | 0.50 | 3 | 0.05 | 40 | 2.00 | |
| | Walder, Michael | | | 1961 | USA | 0.00 | 1 | -0.11 | 40 | -4.40 | | | Rupel, David | | | 1970 | USA | 0.00 | 1 | -0.10 | 40 | -4.00 | | | Alazawi, Samir | | | 1810 | USA | 0.50 | 1 | 0.26 | 40 | 10.40 | |
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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