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Individual Calculations April 2009 |
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| Naroditsky, Daniel Total change: -27.15 | |   |
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| 2008 Berkeley International | Berkeley, California | USA | 2008-12-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2371 | 2382 | 4.00 | 10 | -1.11 | 15 | -16.65 | |
|  Kacheishvili, Gior | g | | 2572 | GEO | 0.00 | 1 | -0.25 | 15 | -3.75 | |  Bhat, Vinay S | g | | 2497 | USA | 0.50 | 1 | 0.16 | 15 | 2.40 | | | Jahedi, Salar | | | 2106 | USA | 0.50 | 1 | -0.33 | 15 | -4.95 | | | Kustar, Sandor | m | | 2356 | HUN | 1.00 | 1 | 0.46 | 15 | 6.90 | | | Sarkar, Justin | m | | 2451 | USA | 0.50 | 1 | 0.10 | 15 | 1.50 | | | Evans, Bela | f | | 2258 | USA | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Izoria, Zviad | g | | 2610 | GEO | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Zenyuk, Iryna | c | wm | 2237 | USA | 0.00 | 1 | -0.69 | 15 | -10.35 | | | Pruess, David | m | | 2422 | USA | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Haessel, Dale R | f | | 2199 | CAN | 0.50 | 1 | -0.24 | 15 | -3.60 | |
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) | | | | 18th Annual North American Open | Las vegas, Nevada | USA | 2008-12-26 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2152 | 2382 | 3.00 | 6 | -1.72 | 15 | -25.80 | |
| | Kudryavtsev, Vadim | | | 2173 | RUS | 0.00 | 1 | -0.77 | 15 | -11.55 | | | Nita Iii, Marian M | | | 2091 | USA | 0.00 | 1 | -0.85 | 15 | -12.75 | | | Larson, Gerald A | | | 2135 | USA | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Brownscombe, Tom | f | | 2196 | USA | 0.50 | 1 | -0.24 | 15 | -3.60 | | | He, Tianyi | | | 2094 | USA | 0.50 | 1 | -0.34 | 15 | -5.10 | | | Moskow, Eric D | | | 2225 | USA | 1.00 | 1 | 0.29 | 15 | 4.35 | |
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) | | | | 26th Annual U.S Amateur Team West | Woodland Hills, CA | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2196 | 2362 | 3.50 | 5 | -0.01 | 15 | -0.15 | |
| | Tatum, Kofi O | | | 2020 | USA | 1.00 | 1 | 0.12 | 15 | 1.80 | | | Banawa, Joel | f | | 2327 | USA | 0.50 | 1 | -0.05 | 15 | -0.75 | | | Kretchetov, Alexandre | f | | 2358 | RUS | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Garcia, Carlos | | | 2142 | CUB | 0.50 | 1 | -0.28 | 15 | -4.20 | | | Pinto, Mark A | | | 2131 | USA | 1.00 | 1 | 0.21 | 15 | 3.15 | |
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) | | | | Western Chess Congress | Concord, California | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2367 | 2362 | 3.00 | 4 | 1.03 | 15 | 15.45 | |
| | Lee, Andy C | | | 2240 | USA | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Shankland, Samuel | m | | 2453 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Ginsburg, Mark | m | | 2373 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | | | De Guzman, Ricardo | m | | 2402 | PHI | 0.50 | 1 | 0.06 | 15 | 0.90 | |
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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