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Individual Calculations September 2009 |
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| Mackinnon, Keith Total change: -18.90 | |   |
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| 3rd Annual Philadelphia International | Philadelphia, Pennsylvania | USA | 2009-06-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2236 | 2145 | 4.00 | 8 | 0.86 | 15 | 12.90 | |
|  Stocek, Jiri | g | | 2495 | CZE | 0.00 | 1 | -0.11 | 15 | -1.65 | | | Cheng, Bindi | f | | 2361 | CAN | 0.50 | 1 | 0.28 | 15 | 4.20 | |  Qin, Ziyi | | | 2145 | CAN | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Rogers, Norman | f | | 2240 | USA | 0.50 | 1 | 0.13 | 15 | 1.95 | | | Hansen, Eric | f | | 2398 | CAN | 0.00 | 1 | -0.19 | 15 | -2.85 | | | Odeh, Kenneth | | | 1999 | NGR | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Szalay, Karoly | | | 2050 | CAN | 0.50 | 1 | -0.13 | 15 | -1.95 | | | Dougherty, Michael | f | | 2203 | CAN | 1.00 | 1 | 0.58 | 15 | 8.70 | |
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) | | | | 37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2108 | 2145 | 2.50 | 8 | -1.87 | 15 | -28.05 | |
| | Hortillosa, Andres | | | 2143 | USA | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Ng, Gary K W | | | 2085 | CAN | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Boor, Carl B | f | | 2291 | USA | 0.00 | 1 | -0.30 | 15 | -4.50 | | | Iwu, Okechukwu A | | | 2198 | USA | 0.00 | 1 | -0.43 | 15 | -6.45 | | | Shetty, Atulya A | | | 1972 | USA | 0.00 | 1 | -0.73 | 15 | -10.95 | | | Ng, Andrew | | | 2103 | USA | 1.00 | 1 | 0.44 | 15 | 6.60 | | | Wang, Eigen | | | 2157 | USA | 0.50 | 1 | 0.02 | 15 | 0.30 | | | Jayakumar, Adarsh | | | 1917 | USA | 0.00 | 1 | -0.79 | 15 | -11.85 | |
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) | | | | 2009 Canadian Open | Edmonton, Alberta | CAN | 2009-07-11 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2189 | 2148 | 4.00 | 7 | 0.85 | 15 | 12.75 | |
| | Nadeau, Gabrielle | | | 1748 * | CAN | 1.00 | 1 | 0.08 | 15 | 1.20 | | | Hansen, Eric | f | | 2423 | CAN | 0.00 | 1 | -0.17 | 15 | -2.55 | | | Jablon, Stephen | | | 1985 | USA | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Mulyar, Michael | m | | 2390 | USA | 1.00 | 1 | 0.80 | 15 | 12.00 | | | Zhao, Xue | g | wg | 2544 | CHN | 0.00 | 1 | -0.08 | 15 | -1.20 | | | Shah, Omaray | | | 1883 | CAN | 1.00 | 1 | 0.18 | 15 | 2.70 | | | Panjwani, Raja | f | | 2350 | CAN | 0.00 | 1 | -0.24 | 15 | -3.60 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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 Canadian Youth Ch U16 Open | Victoria, British Columbia | CAN | 2009-07-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2038 | 2148 | 2.00 | 5 | -1.21 | 15 | -18.15 | |
| | Xiong, Jerry | | | 2036 | CAN | 0.00 | 1 | -0.65 | 15 | -9.75 | | | Wang, Jesse B | | | 2017 | CAN | 0.50 | 1 | -0.18 | 15 | -2.70 | | | Calugar, Arthur | | | 2072 | CAN | 1.00 | 1 | 0.40 | 15 | 6.00 | | | Sapozhnikov, Roman | | | 2176 | CAN | 0.00 | 1 | -0.46 | 15 | -6.90 | | | Huang, Richard | | | 1888 | CAN | 0.50 | 1 | -0.32 | 15 | -4.80 | |
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 Canadian Zonal Ch | Guelph, Ontario | CAN | 2009-08-08 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2275 | 2148 | 2.50 | 7 | 0.11 | 15 | 1.65 | |
| | Thavandiran, Shiyam | f | | 2291 | CAN | 1.00 | 1 | 0.69 | 15 | 10.35 | | | Gerzhoy, Leonid | m | | 2409 | CAN | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Livshits, Ron | m | | 2332 | CAN | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Porper, Edward | m | | 2448 | CAN | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Me, Kevin | | | 2145 | CAN | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Kaminski, Thomas | | | 2088 | CAN | 0.50 | 1 | -0.08 | 15 | -1.20 | | | Plotkin, Victor | | | 2215 | CAN | 0.50 | 1 | 0.09 | 15 | 1.35 | |
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) | | |
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