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Individual Calculations May 2012 |
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| Arond, Dean Total change: 9.60 | |   |
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| 8th North American Amateur Open | Skokie, Illinois | USA | 2012-03-10 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2190 | 1790 | 0.00 | 1 | -0.08 | 30 | -2.40 | |
|  Boor, Carl Brandon | f | | 2190 * | USA | 0.00 | 1 | -0.08 | 30 | -2.40 | | | * 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) | | | | 9th North American Amateur Open - 2nd Scott Silvernan Memorial | Skokie, Illinois | USA | 2012-04-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2031 | 1790 | 1.00 | 3 | 0.40 | 30 | 12.00 | |
| | Acosta, Mariano A | | | 2093 | USA | 0.50 | 1 | 0.36 | 30 | 10.80 | |  Tutush, Dusan | | | 1980 | USA | 0.50 | 1 | 0.25 | 30 | 7.50 | | | Cen, Kent Y | | | 2019 | USA | 0.00 | 1 | -0.21 | 30 | -6.30 | |
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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