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Individual Calculations September 2009 |
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| Winter-Roach, Alex Total change: 26.40 | |   |
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| Trinidad and Tobago 3rd Preliminary National Championship Open 2009 | San Fernando | TRI | 2009-07-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2089 | 2026 | 1.50 | 3 | 0.26 | 15 | 3.90 | |
|  Rosales, Guelmo | | | 2035 | TRI | 0.50 | 1 | 0.01 | 15 | 0.15 | | | Joseph, Marcus | | | 2158 | TRI | 0.00 | 1 | -0.32 | 15 | -4.80 | |  Pouchet, Michael | f | | 2073 | TRI | 1.00 | 1 | 0.57 | 15 | 8.55 | |
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) | | | | Caribbean Chess Carnival 2009 - Open | Port of Spain | TRI | 2009-08-04 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2161 | 2026 | 4.50 | 9 | 1.50 | 15 | 22.50 | |
| | Ostos, Julio | m | | 2306 | VEN | 0.00 | 1 | -0.16 | 15 | -2.40 | | | Noel, Roderick | | | 1856 | TRI | 1.00 | 1 | 0.28 | 15 | 4.20 | | | Ramos, Cesar | | | 2124 | VEN | 1.00 | 1 | 0.63 | 15 | 9.45 | | | Harper, Ryan | f | | 2223 | TRI | 1.00 | 1 | 0.75 | 15 | 11.25 | | | Denny, Kevin | m | | 2351 | BAR | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Duncan, Leonard | | | 2036 | TRI | 0.50 | 1 | 0.01 | 15 | 0.15 | | | Joseph, Marcus | | | 2158 | TRI | 1.00 | 1 | 0.68 | 15 | 10.20 | | | Teran Abreu, Lisyender | | | 2121 | VEN | 0.00 | 1 | -0.37 | 15 | -5.55 | | | Adu, Oladapo | m | | 2276 | NGR | 0.00 | 1 | -0.19 | 15 | -2.85 | |
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) | | |
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