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Individual Calculations July 2009 |
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| Brock, William H Total change: 6.90 | |   |
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| 20th North American FIDE Invitational | Skokie, Illinois | USA | 2009-04-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2264 | 2009 | 1.50 | 9 | -0.28 | 15 | -4.20 | |
|  Chow, Albert C | f | | 2203 | USA | 0.00 | 1 | -0.25 | 15 | -3.75 | |  Young, Angelo | m | | 2350 | PHI | 0.00 | 1 | -0.12 | 15 | -1.80 | | | Arjun, Vishnuvardh | m | | 2307 | IND | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Stamnov, Aleksanda | f | | 2226 | MKD | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Felecan, Florin | f | | 2359 | USA | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Koo, Oliver T | | | 2255 | USA | 1.00 | 1 | 0.81 | 15 | 12.15 | | | Shankar, Gauri | f | | 2278 | IND | 0.00 | 1 | -0.17 | 15 | -2.55 | | | Flaga, Krzysztof | | | 2038 | USA | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Pasalic, Mehmed | m | | 2359 | GER | 0.00 | 1 | -0.11 | 15 | -1.65 | |
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) | | | | 18th Annual Chicago Open - U2300 Section | Wheeling, Illinois | USA | 2009-05-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2200 | 2009 | 2.00 | 5 | 0.74 | 15 | 11.10 | |
| | Iwu, Okechukwu N | | | 2198 | USA | 0.00 | 1 | -0.25 | 15 | -3.75 | | | Kudryavtsev, Vadim | | | 2165 | RUS | 1.00 | 1 | 0.71 | 15 | 10.65 | | | Cardona, Liulia | | wf | 2226 | CUB | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Kane, Jeremy | | | 2152 | USA | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Whaley, Davis M | | | 2257 | USA | 0.50 | 1 | 0.31 | 15 | 4.65 | |
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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