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Individual Calculations November 2009 |
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| Kaufman, Larry Total change: 1.80 | |   |
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| 41st Annual Atlantic Open | Washington DC | USA | 2009-08-28 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2340 | 2400 | 2.50 | 4 | 0.20 | 10 | 2.00 | |
|  Reichstein, Boris | f | | 2152 | USA | 1.00 | 1 | 0.19 | 10 | 1.90 | |  Kacheishvili, Giorgi | g | | 2606 | GEO | 0.00 | 1 | -0.24 | 10 | -2.40 | | | Samuelson, Andrew | | | 2173 | USA | 1.00 | 1 | 0.21 | 10 | 2.10 | | | Sharavdorj, Dashzegve | g | | 2430 | MGL | 0.50 | 1 | 0.04 | 10 | 0.40 | |
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 US Senior Open | Tulsa, Oklahoma | USA | 2009-09-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2361 | 2401 | 3.00 | 4 | 0.83 | 10 | 8.30 | |
| | Mackenzie, Dana | | | 2112 | USA | 1.00 | 1 | 0.16 | 10 | 1.60 | | | Christiansen, Larry | g | | 2578 | USA | 0.50 | 1 | 0.23 | 10 | 2.30 | | | Gulko, Boris | g | | 2546 | USA | 1.00 | 1 | 0.69 | 10 | 6.90 | | | Shipman, Walter | m | | 2209 | USA | 0.50 | 1 | -0.25 | 10 | -2.50 | |
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) | | | | 49th Maryland Open | Rockville, Maryland | USA | 2009-10-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2221 | 2401 | 2.00 | 4 | -0.85 | 10 | -8.50 | |
| | Collier, Philip M | | | 2073 | USA | 1.00 | 1 | 0.13 | 10 | 1.30 | | | Fink Jr, Stanley W | | | 2132 | USA | 1.00 | 1 | 0.17 | 10 | 1.70 | | | Smith, Bryan G | m | | 2474 | USA | 0.00 | 1 | -0.40 | 10 | -4.00 | | | Balasubramanian, A | | | 2204 | IND | 0.00 | 1 | -0.75 | 10 | -7.50 | |
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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