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Individual Calculations January 2012 |
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| Duran Vega, Sergio Total change: -4.80 | |   |
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| Final Campeonato Nacional Absoluto 2011 | San Jose | CRC | 2011-10-18 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2194 | 2211 | 5.50 | 11 | -0.26 | 15 | -3.90 | |
|  Needham, Bryan | | | 2031 | CRC | 1.00 | 1 | 0.26 | 15 | 3.90 | |  Minero Pineda, Carlos | | | 2052 | CRC | 0.50 | 1 | -0.21 | 15 | -3.15 | | | Arias Santana, Mauricio | m | | 2327 | CRC | 0.00 | 1 | -0.34 | 15 | -5.10 | | | Valdes, Leonardo | m | | 2387 | CRC | 0.00 | 1 | -0.27 | 15 | -4.05 | | | Bermudez Munoz, Alexander | | | 2064 | CRC | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Munoz, Carolina | | wm | 2017 | CRC | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Castillo, Rommel | | | 2129 | NCA | 0.50 | 1 | -0.11 | 15 | -1.65 | | | Alfaro Rojas, Alfonso | | | 2239 | CRC | 0.50 | 1 | 0.04 | 15 | 0.60 | | | Gonzalez, Bernal | m | | 2433 | CRC | 0.00 | 1 | -0.22 | 15 | -3.30 | | | Murillo, Alexis | m | | 2301 | CRC | 1.00 | 1 | 0.62 | 15 | 9.30 | | | Cabrera, Marco Antonio | | | 2154 | CRC | 0.50 | 1 | -0.08 | 15 | -1.20 | |
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) | | | | Panama Chess Open | Panama | PAN | 2011-11-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2262 | 2226 | 3.00 | 7 | -0.19 | 15 | -2.85 | |
| | Barrientos, Sergio E | g | | 2517 | COL | 0.00 | 1 | -0.15 | 15 | -2.25 | | | Barros, Raul | | | 2032 | COL | 1.00 | 1 | 0.25 | 15 | 3.75 | | | Mathews, Bryan | c | | 2034 | PAN | 0.50 | 1 | -0.25 | 15 | -3.75 | | | Perez Garcia, Rodney | m | | 2424 | CUB | 0.50 | 1 | 0.26 | 15 | 3.90 | | | Ruiz, Sanchez Orlen | f | | 2411 | CUB | 0.00 | 1 | -0.26 | 15 | -3.90 | | | Hernandez, Erick | | | 1987 | ESA | 1.00 | 1 | 0.20 | 15 | 3.00 | | | Gongora Reyes, Maikel | m | | 2429 | CUB | 0.00 | 1 | -0.24 | 15 | -3.60 | |
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) | | | | Abierto Metropolitano | San Jose | CRC | 2011-12-13 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2039 | 2226 | 6.00 | 8 | 0.13 | 15 | 1.95 | |
| | Marin Lopez, Marco | | | 2014 | CRC | 1.00 | 1 | 0.23 | 15 | 3.45 | | | Montes Fonseca, Oscar | | | 1935 | CRC | 0.50 | 1 | -0.35 | 15 | -5.25 | | | Brenes, Juan Carlos | | | 1959 | CRC | 0.50 | 1 | -0.32 | 15 | -4.80 | | | Montoya Aguilar, Cristian | | | 1921 | CRC | 1.00 | 1 | 0.14 | 15 | 2.10 | | | Fernandez Sanchez, Mario | | | 2083 | CRC | 1.00 | 1 | 0.31 | 15 | 4.65 | | | Urbina Quiros, Edwin | | | 2087 | CRC | 0.50 | 1 | -0.19 | 15 | -2.85 | | | Castillo, Rommel | | | 2140 | CRC | 1.00 | 1 | 0.38 | 15 | 5.70 | | | Ruiz Blais, Sebastian | | | 2173 | CRC | 0.50 | 1 | -0.07 | 15 | -1.05 | |
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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