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Individual Calculations January 2011 |
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| Zierk, Steven C Total change: 63.05 | |   |
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| World Youth Chess Championships 2010 - Open under 18 | Porto Carras, Chalkidiki - Greece | GRE | 2010-10-20 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2414 | 2391 | 9.50 | 11 | 4.41 | 15 | 66.15 | |
|  Rostgaard, Tobias Valentin | | | 2114 | DEN | 1.00 | 1 | 0.17 | 15 | 2.55 | |  Dilanyan, Grigor | | | 2245 | ARM | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Grandelius, Nils | g | | 2500 | SWE | 1.00 | 1 | 0.65 | 15 | 9.75 | | | Firat, Burak | m | | 2424 | TUR | 1.00 | 1 | 0.55 | 15 | 8.25 | | | Ter-Sahakyan, Samvel | g | | 2516 | ARM | 0.50 | 1 | 0.17 | 15 | 2.55 | | | Belous, Vladimir | | | 2498 | RUS | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Alonso Rosell, Alvar | m | | 2485 | ESP | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Mazur, Stefan | m | | 2403 | SVK | 1.00 | 1 | 0.52 | 15 | 7.80 | | | Anwesh, Upadhyaya | | | 2420 | IND | 1.00 | 1 | 0.54 | 15 | 8.10 | | | Arribas Lopez, Angel | f | | 2454 | ESP | 1.00 | 1 | 0.59 | 15 | 8.85 | | | Durarbeyli, Vasif | g | | 2495 | AZE | 1.00 | 1 | 0.64 | 15 | 9.60 | |
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) | | | NOTE: K factor changed | | 46th Annual American Open | Los Angeles, California | USA | 2010-11-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2323 | 2403 | 5.00 | 8 | 0.23 | 10 | 2.30 | |
| | Kavutskiy, Konstantin | | | 2149 | USA | 0.50 | 1 | -0.31 | 10 | -3.10 | | | Akopian, Robert | | | 2093 | USA | 1.00 | 1 | 0.14 | 10 | 1.40 | | | Belakovskaia, Anjelina | | wg | 2286 | USA | 1.00 | 1 | 0.34 | 10 | 3.40 | | | Amanov, Zhanibek | m | | 2394 | KAZ | 1.00 | 1 | 0.49 | 10 | 4.90 | | | Yankovsky, Roman | | | 2381 | RUS | 0.50 | 1 | -0.03 | 10 | -0.30 | | | Friedel, Joshua E | g | | 2505 | USA | 0.00 | 1 | -0.36 | 10 | -3.60 | | | Paragua, Mark C | g | | 2509 | PHI | 0.00 | 1 | -0.36 | 10 | -3.60 | | | Manukian, Lernik | | | 2270 | ARM | 1.00 | 1 | 0.32 | 10 | 3.20 | |
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) | | | NOTE: K factor changed | | 2010 UTD GM Invitational | Richardson, Texas | USA | 2010-12-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2485 | 2403 | 3.00 | 9 | -0.54 | 10 | -5.40 | |
| | Dreev, Aleksey | g | | 2674 | RUS | 0.00 | 1 | -0.17 | 10 | -1.70 | | | Hughes, Tyler B | f | | 2267 | USA | 0.50 | 1 | -0.18 | 10 | -1.80 | | | Panchanathan, Magesh | g | | 2546 | IND | 1.00 | 1 | 0.69 | 10 | 6.90 | | | Ramirez, Alejandro | g | | 2577 | USA | 0.00 | 1 | -0.27 | 10 | -2.70 | | | Yang, Darwin | f | | 2417 | USA | 0.00 | 1 | -0.48 | 10 | -4.80 | | | Chirila, Ioan Cristian | g | | 2492 | ROU | 0.00 | 1 | -0.38 | 10 | -3.80 | | | Sadorra, Julio C | m | | 2473 | PHI | 0.00 | 1 | -0.40 | 10 | -4.00 | | | Bercys, Salvijus | m | | 2447 | USA | 1.00 | 1 | 0.56 | 10 | 5.60 | | | Wang, Puchen | m | | 2468 | NZL | 0.50 | 1 | 0.09 | 10 | 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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