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Individual Calculations November 2010 |
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| Perepelitsky, Philipp Total change: -12.30 | |   |
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| Peter Grey Tuesday Night Marathon | San Francisco, California | USA | 2010-08-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2143 | 2124 | 1.50 | 3 | 0.06 | 15 | 0.90 | |
|  Lee, Andy | f | | 2309 | USA | 0.00 | 1 | -0.26 | 15 | -3.90 | |  Manvelyan, Hayk | | | 2111 | USA | 0.50 | 1 | -0.02 | 15 | -0.30 | | | Gaffagan, Steven | | | 2010 | USA | 1.00 | 1 | 0.34 | 15 | 5.10 | |
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) | | | | 2010 CalChess Labor Day Championships | San Francisco, California | USA | 2010-09-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2110 | 2121 | 2.50 | 6 | -0.63 | 15 | -9.45 | |
| | Pruess, David | m | | 2375 | USA | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Harmon-Vellotti, Luke | | | 2110 | USA | 0.00 | 1 | -0.52 | 15 | -7.80 | | | Mackenzie, Dana N | | | 2091 | USA | 0.50 | 1 | -0.04 | 15 | -0.60 | | | Gallegos, Paul A | | | 2107 | USA | 0.50 | 1 | -0.02 | 15 | -0.30 | | | Cohen, Micah | | | 2020 | USA | 0.50 | 1 | -0.14 | 15 | -2.10 | | | Haring, Ruth Inez | | wm | 1957 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | |
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) | | | | 19th Annual Midwest Class Championships | Wheeling, Illinois | USA | 2010-10-15 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2236 | 2121 | 1.50 | 5 | -0.25 | 15 | -3.75 | |
| | Karklins, Andrew | f | | 2208 | USA | 0.50 | 1 | 0.12 | 15 | 1.80 | | | Kleiman, Jake | m | | 2402 | USA | 0.50 | 1 | 0.34 | 15 | 5.10 | | | Homa, Seth | f | | 2260 | USA | 0.00 | 1 | -0.31 | 15 | -4.65 | | | Zelkind, Eduard A | f | | 2201 | USA | 0.50 | 1 | 0.11 | 15 | 1.65 | | | Magness, Trevor S | | | 2111 | USA | 0.00 | 1 | -0.51 | 15 | -7.65 | |
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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