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Individual Calculations January 2009 |
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| Arenas, David Total change: 46.05 | |   |
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| IRT Nacional Inter-Empresas 2008 | Bogota | COL | 2008-10-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2236 | 2323 | 4.50 | 5 | 1.45 | 15 | 21.75 | |
|  Palao, Maricela | | wm | 2083 | COL | 1.00 | 1 | 0.20 | 15 | 3.00 | |  Becerra, Juan David | | | 2142 | COL | 1.00 | 1 | 0.26 | 15 | 3.90 | | | Almanza, Rafael Andres | | | 2187 | COL | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Mosquera, Miguel | m | | 2372 | COL | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Castro, Oscar H | m | | 2395 | COL | 0.50 | 1 | 0.10 | 15 | 1.50 | |
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) | | | | 2008 Pan American - Continental Championships | Boca Raton, Florida | USA | 2008-11-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2411 | 2323 | 4.50 | 8 | 1.36 | 15 | 20.40 | |
| | Bhat, Vinay S | g | | 2497 | USA | 1.00 | 1 | 0.73 | 15 | 10.95 | | | Hoyos, Manuel Leon | g | | 2535 | MEX | 0.00 | 1 | -0.23 | 15 | -3.45 | | | Escobar, Alder | m | | 2482 | COL | 0.50 | 1 | 0.21 | 15 | 3.15 | | | Garcia, Alvaro | f | | 2198 | COL | 1.00 | 1 | 0.33 | 15 | 4.95 | | | Stripunsky, Alexander | g | | 2553 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Santarius, Erik F | | | 2213 | USA | 1.00 | 1 | 0.35 | 15 | 5.25 | | | Shabalov, Alexander | g | | 2585 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | | | Gonzales, Manuel Robledo | | | 2223 | PER | 1.00 | 1 | 0.36 | 15 | 5.40 | |
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) | | | | Torneo IRT OPEN DE LAS AMERICAS | Medellin | COL | 2008-11-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2217 | 2323 | 6.00 | 9 | 0.26 | 15 | 3.90 | |
| | Torres, Juan Camilo | | | 2103 | COL | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Nunez, Gustavo Eduardo | f | | 2186 | COL | 1.00 | 1 | 0.32 | 15 | 4.80 | | | Montenegro, Juan Rolando | | | 2159 | COL | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Vittorino, Carlo | f | | 2342 | COL | 0.00 | 1 | -0.47 | 15 | -7.05 | | | Sanchez Maya, Simon | | | 2168 | COL | 1.00 | 1 | 0.29 | 15 | 4.35 | | | Garavito, Miguel Angel | | | 2157 | COL | 0.50 | 1 | -0.22 | 15 | -3.30 | | | Zuluaga, Cesar | f | | 2320 | COL | 0.50 | 1 | 0.00 | 15 | 0.00 | | | Gallego, Andres Felipe | | | 2365 | COL | 0.00 | 1 | -0.44 | 15 | -6.60 | | | Rivera, Ingris | | wm | 2153 | COL | 1.00 | 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) | | |
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