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Individual Calculations November 2009 |
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| Arnold, Marc T Total change: 13.60 | |   |
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| 23rd North American FIDE Invitational | Skokie, Illinois | USA | 2009-08-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2315 | 2407 | 5.00 | 9 | -0.61 | 10 | -6.10 | |
|  Chow, Albert C | f | | 2254 | USA | 0.50 | 1 | -0.20 | 10 | -2.00 | |  Thaler, Michael | | | 2235 | USA | 0.00 | 1 | -0.73 | 10 | -7.30 | | | Adamson, Robby | f | | 2302 | USA | 1.00 | 1 | 0.36 | 10 | 3.60 | | | Molner, Mackenzie | | | 2393 | USA | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Kleiman, Jake | f | | 2350 | USA | 0.50 | 1 | -0.08 | 10 | -0.80 | | | Young, Angelo | m | | 2318 | PHI | 0.50 | 1 | -0.12 | 10 | -1.20 | | | Betaneli, Alex | f | | 2287 | USA | 1.00 | 1 | 0.34 | 10 | 3.40 | | | Felecan, Florin | f | | 2399 | USA | 0.00 | 1 | -0.51 | 10 | -5.10 | | | Arjun, Vishnuvardhan | m | | 2295 | IND | 1.00 | 1 | 0.35 | 10 | 3.50 | |
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) | | | | 41st Annual Atlantic Open | Washington DC | USA | 2009-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2281 | 2407 | 4.00 | 5 | 0.75 | 10 | 7.50 | |
| | Vulis, Daniel | | | 2092 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Greanias, Steven D | | | 2149 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Samuelson, Andrew | | | 2173 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Izoria, Zviad | g | | 2604 | GEO | 0.50 | 1 | 0.25 | 10 | 2.50 | | | Enkhbat, Tegshsure | m | | 2388 | USA | 0.50 | 1 | -0.03 | 10 | -0.30 | |
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) | | | | 2009 Miami Open and Florida State Championship | Miami, Florida | USA | 2009-09-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2347 | 2417 | 6.50 | 9 | 1.22 | 10 | 12.20 | |
| | Perez, Robert M | | | 2173 | USA | 1.00 | 1 | 0.20 | 10 | 2.00 | | | Studen, Damir | | | 2194 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Shankland, Samuel | m | | 2474 | USA | 0.50 | 1 | 0.08 | 10 | 0.80 | | | Molner, Mackenzie | | | 2397 | USA | 0.50 | 1 | -0.03 | 10 | -0.30 | | | Pelaez, Jorge | f | | 2220 | CUB | 1.00 | 1 | 0.25 | 10 | 2.50 | | | Galofre, Charles A | f | | 2276 | USA | 1.00 | 1 | 0.31 | 10 | 3.10 | | | Becerra, Julio J | g | | 2533 | USA | 0.50 | 1 | 0.16 | 10 | 1.60 | | | Gonzalez, Renier | g | | 2485 | USA | 0.50 | 1 | 0.09 | 10 | 0.90 | | | Hernandez, Gustavo | m | | 2371 | DOM | 0.50 | 1 | -0.06 | 10 | -0.60 | |
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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