Individual Calculations September 2009 |
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Iwu, Okechukwu A Total change: 12.60 | | ![Rating chart](/imga/chart.gif) ![Personal card](/imga/card.gif) |
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37th Annual World Open - Under 2400 Section | Philadelphia, Pennsylvania | USA | 2009-06-29 |
Rc | Ro | w | n | change | K | K*chg | Game |
2245 | 2198 | 6.00 | 9 | 2.06 | 15 | 30.90 | |
| Holt, Conrad | | | 2289 | USA | 1.00 | 1 | 0.62 | 15 | 9.30 | | Ravichandran, Siddharth | | | 2303 | IND | 0.00 | 1 | -0.36 | 15 | -5.40 | | Parry, Matt J | | | 2229 | USA | 1.00 | 1 | 0.54 | 15 | 8.10 | | Adu, Oladapo O | m | | 2294 | NGR | 0.00 | 1 | -0.37 | 15 | -5.55 | | Mackinnon, Keith | | | 2145 | CAN | 1.00 | 1 | 0.43 | 15 | 6.45 | | Dzera, Victor | | | 2200 | CAN | 1.00 | 1 | 0.50 | 15 | 7.50 | | Kahn, Aaron E | | | 2192 | USA | 1.00 | 1 | 0.49 | 15 | 7.35 | | Hughes, Tyler B | | | 2230 | USA | 1.00 | 1 | 0.54 | 15 | 8.10 | | Battaglini, Gabriel | | | 2325 | FRA | 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) | | 2nd Annual Chicago Class Championships | Oak Brook, Illinois | USA | 2009-07-17 |
Rc | Ro | w | n | change | K | K*chg | Game |
2157 | 2189 | 0.50 | 3 | -1.13 | 15 | -16.95 | |
| Felecan, Florin | f | | 2399 | USA | 0.00 | 1 | -0.23 | 15 | -3.45 | | Magness, Trevor S | | | 2105 | USA | 0.00 | 1 | -0.62 | 15 | -9.30 | | Coraretti, Benjamin | | | 1967 | USA | 0.50 | 1 | -0.28 | 15 | -4.20 | | 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) | | 39th Annual Continental Open | Sturbridge, Massachusetts | USA | 2009-08-13 |
Rc | Ro | w | n | change | K | K*chg | Game |
2251 | 2189 | 2.50 | 6 | -0.09 | 15 | -1.35 | |
| Kelleher, William | f | | 2364 | USA | 0.00 | 1 | -0.27 | 15 | -4.05 | | Chiang, Michael | | | 1927 | USA | 1.00 | 1 | 0.18 | 15 | 2.70 | | Kacheishvili, Giorgi | g | | 2589 * | GEO | 0.50 | 1 | 0.42 | 15 | 6.30 | | Thaler, Michael | | | 2235 | USA | 0.50 | 1 | 0.06 | 15 | 0.90 | | Guo, Gill Y | | | 2111 | USA | 0.50 | 1 | -0.11 | 15 | -1.65 | | Castaneda, Nelson | f | | 2282 | USA | 0.00 | 1 | -0.37 | 15 | -5.55 | | * 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) | |
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