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Individual Calculations April 2009 |
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| Kacheishvili, Giorgi Total change: 22.90 | |   |
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| 2008 Berkeley International | Berkeley, California | USA | 2008-12-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2427 | 2572 | 7.50 | 10 | 0.66 | 10 | 6.60 | |
|  Naroditsky, Daniel | f | | 2382 | USA | 1.00 | 1 | 0.25 | 10 | 2.50 | |  Rensch, Daniel M | f | | 2354 | USA | 0.50 | 1 | -0.28 | 10 | -2.80 | | | Krush, Irina | m | wg | 2452 | USA | 0.50 | 1 | -0.16 | 10 | -1.60 | | | Sarkar, Justin | m | | 2451 | USA | 1.00 | 1 | 0.34 | 10 | 3.40 | | | Izoria, Zviad | g | | 2610 | GEO | 0.50 | 1 | 0.05 | 10 | 0.50 | | | Sharavdorj, Dashze | g | | 2442 | MGL | 1.00 | 1 | 0.32 | 10 | 3.20 | | | Friedel, Joshua E | g | | 2497 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | | | Esserman, Marc R | | | 2348 | USA | 1.00 | 1 | 0.22 | 10 | 2.20 | | | Zenyuk, Iryna | c | wm | 2237 | USA | 1.00 | 1 | 0.12 | 10 | 1.20 | | | Bhat, Vinay S | g | | 2497 | USA | 0.50 | 1 | -0.10 | 10 | -1.00 | |
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 |
| 2460 | 2572 | 6.00 | 7 | 1.57 | 10 | 15.70 | |
| | Mackinnon, Keith | | | 2222 | CAN | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Lein, Anatoly Y | g | | 2317 | USA | 1.00 | 1 | 0.19 | 10 | 1.90 | | | Mulyar, Michael A | m | | 2395 | USA | 1.00 | 1 | 0.27 | 10 | 2.70 | | | Cicak, Slavko | g | | 2564 | SWE | 1.00 | 1 | 0.49 | 10 | 4.90 | | | Izoria, Zviad | g | | 2610 | GEO | 0.50 | 1 | 0.05 | 10 | 0.50 | | | Akobian, Varuzhan | g | | 2607 | USA | 1.00 | 1 | 0.55 | 10 | 5.50 | | | Khachiyan, Melikset | g | | 2508 | USA | 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) | | | | Happy New Year Open | New York, New York | USA | 2009-01-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2452 | 2590 | 2.00 | 2 | 0.62 | 10 | 6.20 | |
| | Lenderman, Alex | m | | 2444 | USA | 1.00 | 1 | 0.30 | 10 | 3.00 | | | Rohde, Michael A | g | | 2460 | USA | 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) | | | | 41st Annual Liberty Bell Open | Philadelphia, Pennsylvania | USA | 2009-01-16 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2324 | 2590 | 5.50 | 7 | -0.14 | 10 | -1.40 | |
| | Fayvinov, Zakhar | f | | 2240 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Zenyuk, Iryna | c | wm | 2240 | USA | 0.00 | 1 | -0.89 | 10 | -8.90 | | | Katz, Benjamin J | | | 2240 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Times, Jerald W | | | 2240 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Tate, Emory A | m | | 2333 | USA | 1.00 | 1 | 0.18 | 10 | 1.80 | | | Molner, Mackenzie | | | 2394 | USA | 1.00 | 1 | 0.25 | 10 | 2.50 | | | Gareev, Timur | g | | 2581 | UZB | 0.50 | 1 | -0.01 | 10 | -0.10 | |
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) | | | | 39th Annual World Amateur Team & US Team East | Parsippany, New Jersey | USA | 2009-02-14 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2240 | 2590 | 2.50 | 3 | -0.17 | 10 | -1.70 | |
| | Markzon, Gregory | f | | 2240 | USA | 0.50 | 1 | -0.39 | 10 | -3.90 | | | Shvartsman, Andrew | | | 2240 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Feuerstein, Arthur | | | 2240 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | |
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 Eastern Class Championships | Sturbridge, Massachusetts | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2461 | 2590 | 3.00 | 5 | -0.25 | 10 | -2.50 | |
| | Cherniack, Alex | | | 2240 | USA | 1.00 | 1 | 0.11 | 10 | 1.10 | | | Kaufman, Raymond | m | | 2308 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Shabalov, Alexander | g | | 2578 | USA | 0.50 | 1 | -0.02 | 10 | -0.20 | | | Kudrin, Sergey | g | | 2561 | USA | 0.50 | 1 | -0.04 | 10 | -0.40 | | | Sadvakasov, Darmen | g | | 2616 | KAZ | 0.00 | 1 | -0.46 | 10 | -4.60 | |
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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