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Individual Calculations June 2019 |
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| Lehman, Clarence Total change: -63.80 | |   |
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| Spring 2019 Tuesday Night Marathon | San Francisco, California | USA | 2019-03-19 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1961 | 1947 | 1.00 | 5 | -1.52 | 40 | -60.80 | |
|  Chambers, Ezra | f | | 2334 | BDI | 0.00 | 1 | -0.09 | 40 | -3.60 | |  Jensen, Christian | | | 1773 | USA | 0.00 | 1 | -0.73 | 40 | -29.20 | | | Gaffagan, Steven | | | 1969 | USA | 0.00 | 1 | -0.47 | 40 | -18.80 | | | Rudyak, Felix | | | 1912 | USA | 0.00 | 1 | -0.55 | 40 | -22.00 | | | Persidsky, Andre | | | 1816 | USA | 1.00 | 1 | 0.32 | 40 | 12.80 | |
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) | | | NOTE: K factor changed | | 2019 CalChess Senior State Championship | San Francisco, California | USA | 2019-05-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1951 | 1854 | 1.00 | 3 | -0.15 | 20 | -3.00 | |
| | Yamamoto, Craig | | | 1531 | USA | 1.00 | 1 | 0.13 | 20 | 2.60 | | | Winslow, Elliott | m | | 2186 | USA | 0.00 | 1 | -0.12 | 20 | -2.40 | | | Koepcke, Richard | | | 2137 | USA | 0.00 | 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) | | |
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