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Individual Calculations April 2009 |
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| Kaufman, Raymond Total change: -31.65 | |   |
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| Hastings Masters | Hastings | ENG | 2008-12-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2274 | 2320 | 3.50 | 7 | -0.48 | 15 | -7.20 | |
|  Howell, David W L | g | | 2593 | ENG | 0.00 | 1 | -0.17 | 15 | -2.55 | |  Cilia Vincenti, David | | | 2108 | MLT | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Salimbeni, George P W | | | 2103 | ENG | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Berg, Emanuel | g | | 2623 | SWE | 0.00 | 1 | -0.14 | 15 | -2.10 | | | Chowdhury, Sohel | | | 2168 | BAN | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Grant, Alan G | | | 2192 | SCO | 0.50 | 1 | -0.17 | 15 | -2.55 | | | Barton, R Alan | | | 2131 | ENG | 0.50 | 1 | -0.25 | 15 | -3.75 | |
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) | | | | Open Praha 2009 - tournament A | Prague | CZE | 2009-01-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2183 | 2308 | 4.50 | 8 | -0.74 | 15 | -11.10 | |
| | Petrak, Robert | | | 2003 | CZE | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Kaplan, Daniel | | | 2131 | CZE | 0.50 | 1 | -0.23 | 15 | -3.45 | | | Hantak, Adam | | | 2112 | GER | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Minina, Veronika | | | 2125 | RUS | 0.00 | 1 | -0.74 | 15 | -11.10 | | | Kounalakis, Evryklis | | | 2087 | GRE | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Kashin, Yury | | | 2085 | RUS | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Simutowe, Amon | m | | 2485 | ZAM | 0.50 | 1 | 0.23 | 15 | 3.45 | | | Dolezal, Radoslav | m | | 2436 | CZE | 0.00 | 1 | -0.33 | 15 | -4.95 | |
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 |
| 2231 | 2308 | 2.00 | 4 | -0.41 | 15 | -6.15 | |
| | Santana Suarez, Jo | | | 2171 | USA | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Getz, Alec | f | | 2223 | USA | 0.50 | 1 | -0.12 | 15 | -1.80 | | | Ju, Evan D | f | | 2306 | USA | 0.00 | 1 | -0.50 | 15 | -7.50 | | | Hulse, Brian | | | 2225 | USA | 1.00 | 1 | 0.39 | 15 | 5.85 | |
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 Virginia Open | McLean, Virginia | USA | 2009-02-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2146 | 2308 | 3.00 | 4 | 0.16 | 15 | 2.40 | |
| | Guo, Gill Y | | | 2106 | USA | 0.50 | 1 | -0.26 | 15 | -3.90 | | | Clancy, Daniel J | | | 2083 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Mc Kenna, Geoffrey | | | 2226 | USA | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Larkins, Larry R | | | 2170 | USA | 1.00 | 1 | 0.31 | 15 | 4.65 | |
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 Eastern Class Championships | Sturbridge, Massachusetts | USA | 2009-03-06 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2173 | 2308 | 2.00 | 4 | -0.64 | 15 | -9.60 | |
| | Finney, Stuart S | | | 1958 | USA | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Kacheishvili, Giorgi | g | | 2590 | GEO | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Prawira, Dennis | | | 2077 | USA | 0.50 | 1 | -0.29 | 15 | -4.35 | | | Aaron, Deepak | | | 2066 | USA | 0.50 | 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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