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Individual Calculations November 2009 |
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| Chow, Albert C Total change: -0.90 | |   |
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| 23rd North American FIDE Invitational | Skokie, Illinois | USA | 2009-08-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2316 | 2254 | 3.50 | 9 | -0.25 | 15 | -3.75 | |
|  Arnold, Marc Tyler | m | | 2407 | USA | 0.50 | 1 | 0.20 | 15 | 3.00 | |  Vaja, Ashish | | | 2195 | USA | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Felecan, Florin | f | | 2399 | USA | 0.50 | 1 | 0.19 | 15 | 2.85 | | | Kleiman, Jake | f | | 2350 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Sarkar, Justin | m | | 2388 | USA | 0.00 | 1 | -0.32 | 15 | -4.80 | | | Fouts, Matthew | | | 2206 | USA | 1.00 | 1 | 0.43 | 15 | 6.45 | | | Lee, Michael | f | | 2347 | USA | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Betaneli, Alex | f | | 2287 | USA | 0.50 | 1 | 0.05 | 15 | 0.75 | | | Santarius, Erik F | | | 2267 | USA | 0.00 | 1 | -0.48 | 15 | -7.20 | |
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) | | | | 2009 Illinois Open Championship | Oak Brook, Illinois | USA | 2009-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2228 | 2254 | 1.50 | 3 | -0.11 | 15 | -1.65 | |
| | Cohen, Lawrence S | | | 2023 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | | | Amanov, Mesgen | g | | 2489 | TKM | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Szpisjak, Steven J | | | 2172 | USA | 0.50 | 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 Midwest Class Champinships | Wheeling, Illinois | USA | 2009-10-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2306 | 2254 | 2.50 | 5 | 0.30 | 15 | 4.50 | |
| | Gurczak, John | | | 2086 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Amanov, Mesgen | g | | 2489 | TKM | 0.50 | 1 | 0.29 | 15 | 4.35 | | | Gurevich, Dmitry | g | | 2506 | USA | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Holt, Conrad | f | | 2343 | USA | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Magness, Trevor S | | | 2108 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | |
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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