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Individual Calculations September 2011 |
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| Hortillosa, Andres Total change: 7.50 | |   |
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| 2011 FIDE Continental America's Amateur Chess Championship | Rosemont, Illinois | USA | 2011-07-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1994 | 1974 | 1.50 | 3 | 0.08 | 15 | 1.20 | |
|  Girardo, Christopher | | | 1782 | USA | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Pamatmat, Jarod M | | | 2136 | USA | 0.00 | 1 | -0.29 | 15 | -4.35 | | | Schmakel, Sam A | | | 2064 | USA | 0.50 | 1 | 0.12 | 15 | 1.80 | |
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) | | | | Chess.MN 8th FIDE Open Rating Tournament | Minneapolis,MN | USA | 2011-07-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1943 | 1974 | 1.50 | 2 | 0.42 | 15 | 6.30 | |
| | Chandler, Jeff A | | | 1861 | USA | 1.00 | 1 | 0.35 | 15 | 5.25 | |  Amarasinghe, Prashantha | | | 2025 | SRI | 0.50 | 1 | 0.07 | 15 | 1.05 | |
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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