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Individual Calculations July 2008 |
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| Pruess, David Total change: 13.30 | |   |
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| 2008 Frank K Berry U.S. Championship - Qualifier Fide Open | Tulsa, Oklahoma | USA | 2008-03-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2335 | 2431 | 5.00 | 7 | 0.62 | 10 | 6.20 | |
|  Bady, Glenn | | | 2226 | USA | 1.00 | 1 | 0.24 | 10 | 2.40 | |  Chua, Alexander | | | 2279 | USA | 1.00 | 1 | 0.30 | 10 | 3.00 | | | Ivanov, Alexander | g | | 2554 | USA | 0.00 | 1 | -0.33 | 10 | -3.30 | | | Bonin, Jay | m | | 2351 | USA | 0.50 | 1 | -0.11 | 10 | -1.10 | | | Movsisyan, Movses | f | | 2247 | USA | 1.00 | 1 | 0.26 | 10 | 2.60 | | | Burnett, Ronald | m | | 2371 | USA | 0.50 | 1 | -0.08 | 10 | -0.80 | | | Langer, Michael | f | | 2314 | USA | 1.00 | 1 | 0.34 | 10 | 3.40 | |
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) | | | | Gausdal Classics GM-B | Gausdal Høifjellshotel | NOR | 2008-04-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2400 | 2425 | 4.50 | 9 | -0.24 | 10 | -2.40 | |
| | Ofstad, Per | | | 2155 | NOR | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Kveinys, Aloyzas | g | | 2515 | LTU | 0.00 | 1 | -0.38 | 10 | -3.80 | | | Unander, Matts | | | 2132 | SWE | 1.00 | 1 | 0.15 | 10 | 1.50 | | | Berelovich, Alexander | g | | 2595 | UKR | 0.50 | 1 | 0.22 | 10 | 2.20 | | | Rotstein, Arkandij | g | | 2528 | GER | 0.50 | 1 | 0.14 | 10 | 1.40 | | | Kadziolka, Beata | | wg | 2326 | POL | 1.00 | 1 | 0.36 | 10 | 3.60 | | | Djurhuus, Rune | g | | 2459 | NOR | 0.50 | 1 | 0.05 | 10 | 0.50 | | | Womacka, Mathias | m | | 2445 | GER | 0.00 | 1 | -0.47 | 10 | -4.70 | | | Lindberg, Bengt | m | | 2442 | SWE | 0.00 | 1 | -0.48 | 10 | -4.80 | |
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) | | | | 2008 Frank K Berry US Championship | Tulsa, Oklahoma | USA | 2008-05-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2499 | 2425 | 4.00 | 9 | 0.40 | 10 | 4.00 | |
| | Becerra, Julio | g | | 2575 | USA | 0.50 | 1 | 0.20 | 10 | 2.00 | | | Shulman, Yury | g | | 2606 | USA | 0.00 | 1 | -0.26 | 10 | -2.60 | | | Ippolito, Dean | m | | 2425 | USA | 1.00 | 1 | 0.50 | 10 | 5.00 | | | Finegold, Benjamin | m | | 2539 | USA | 0.50 | 1 | 0.16 | 10 | 1.60 | | | Perelshteyn, Eugene | g | | 2552 | USA | 0.00 | 1 | -0.33 | 10 | -3.30 | | | Kraai, Jesse | g | | 2509 | USA | 0.50 | 1 | 0.12 | 10 | 1.20 | | | Ludwig, Daniel | | | 2357 | USA | 1.00 | 1 | 0.41 | 10 | 4.10 | | | Ivanov, Alexander | g | | 2560 | USA | 0.00 | 1 | -0.32 | 10 | -3.20 | | | Kaufman, Larry | m | | 2365 | USA | 0.50 | 1 | -0.08 | 10 | -0.80 | |
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) | | | | 2008 National Open | Las Vegas, Nevada | USA | 2008-06-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2364 | 2425 | 4.00 | 6 | 0.55 | 10 | 5.50 | |
| | Malinarski, Yehuda | | | 2104 | ISR | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Rubsamen, Cornelius | | | 2211 | USA | 0.50 | 1 | -0.27 | 10 | -2.70 | | | Collyer, Curt | | | 2274 | USA | 1.00 | 1 | 0.30 | 10 | 3.00 | | | Brigljevic, Milan | f | | 2293 | CRO | 0.50 | 1 | -0.18 | 10 | -1.80 | | | Nakamura, Hikaru | g | | 2686 | USA | 1.00 | 1 | 0.82 | 10 | 8.20 | | | Petrosian, Tigran | g | | 2616 | ARM | 0.00 | 1 | -0.25 | 10 | -2.50 | |
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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