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Individual Calculations July 2009 |
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| Boor, Carl B Total change: 58.95 | |   |
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| 19th NA FIDE Invitational | Skokie, Illinois | USA | 2009-03-21 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2237 | 2318 | 5.00 | 8 | 0.22 | 15 | 3.30 | |
|  Chow, Albert C | f | | 2203 | USA | 0.50 | 1 | -0.16 | 15 | -2.40 | |  Shankar, Gauri | f | | 2272 | IND | 0.00 | 1 | -0.56 | 15 | -8.40 | | | Muradian, Sevan A | | | 1968 | USA | 1.00 | 1 | 0.11 | 15 | 1.65 | | | Young, Angelo | m | | 2361 | PHI | 1.00 | 1 | 0.56 | 15 | 8.40 | | | Hortillosa, Andres | | | 2141 | USA | 0.00 | 1 | -0.73 | 15 | -10.95 | | | Tennant, Steven | | | 2203 | USA | 1.00 | 1 | 0.34 | 15 | 5.10 | | | Pasalic, Mehmed | m | | 2365 | GER | 1.00 | 1 | 0.57 | 15 | 8.55 | | | Felecan, Florin | f | | 2380 | USA | 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) | | | | 47th Cincinnati Open | Cincinnati, Ohio | USA | 2009-03-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2232 | 2318 | 2.00 | 3 | 0.19 | 15 | 2.85 | |
| | Patchell, Erik | | | 2142 | USA | 1.00 | 1 | 0.27 | 15 | 4.05 | | | Markovits, Alex | | | 2062 | USA | 1.00 | 1 | 0.19 | 15 | 2.85 | | | Finegold, Benjamin | m | | 2493 | USA | 0.00 | 1 | -0.27 | 15 | -4.05 | |
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) | | | | 18th Annual Chicago Open - Open Section | Wheeling, Illinois | USA | 2009-05-22 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2338 | 2291 | 4.50 | 7 | 1.37 | 15 | 20.55 | |
| | Sadvakasov, Darmen | g | | 2619 | KAZ | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Gurevich, Dmitry | g | | 2494 | USA | 0.00 | 1 | -0.24 | 15 | -3.60 | | | Sobo, Henry C | | | 2074 | USA | 1.00 | 1 | 0.22 | 15 | 3.30 | | | Rosen, Eric S | | | 2142 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Melekhina, Alisa | | wm | 2287 | USA | 0.50 | 1 | -0.01 | 15 | -0.15 | | | Morshedi, Ali | f | | 2347 | USA | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Garcia, Gildardo J | g | | 2401 | COL | 1.00 | 1 | 0.65 | 15 | 9.75 | |
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) | | | | The Copper State International | Mesa, Arizona | USA | 2009-05-29 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2423 | 2291 | 4.50 | 10 | 1.11 | 15 | 16.65 | |
| | Ramirez, Alejandro | g | | 2563 | CRC | 0.50 | 1 | 0.33 | 15 | 4.95 | | | Hansen, Eric | f | | 2398 | CAN | 0.50 | 1 | 0.15 | 15 | 2.25 | | | Kacheishvili, Giori | g | | 2613 | GEO | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Morshedi, Ali | f | | 2347 | USA | 1.00 | 1 | 0.58 | 15 | 8.70 | | | Rensch, Daniel M | f | | 2400 | USA | 1.00 | 1 | 0.65 | 15 | 9.75 | | | Izoria, Zviad | g | | 2619 | GEO | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Ginsburg, Mark | m | | 2380 | USA | 0.00 | 1 | -0.38 | 15 | -5.70 | | | Ristovic, Nenad | f | | 2252 | CAN | 1.00 | 1 | 0.45 | 15 | 6.75 | | | Haskel, Jeffrey | | | 2140 | USA | 0.50 | 1 | -0.20 | 15 | -3.00 | | | Yermolinsky, Alex | g | | 2522 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | |
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 National Open | Las Vegas, Nevada | USA | 2009-06-05 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2366 | 2291 | 3.00 | 5 | 0.92 | 15 | 13.80 | |
| | Kacheishvili, Giorgi | g | | 2613 | GEO | 0.00 | 1 | -0.13 | 15 | -1.95 | | | Ellenbogen, Michael | | | 2145 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Panjwani, Raja D | f | | 2364 | CAN | 1.00 | 1 | 0.60 | 15 | 9.00 | | | Sevillano, Enrico | m | | 2520 | USA | 0.00 | 1 | -0.21 | 15 | -3.15 | | | Chen, Howard | | | 2189 | USA | 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) | | | | 51st Gem City Open | Dayton, Ohio | USA | 2009-06-12 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 2349 | 2291 | 1.00 | 2 | 0.12 | 15 | 1.80 | |
| | Patchell, Erik | | | 2140 | USA | 1.00 | 1 | 0.30 | 15 | 4.50 | | | Goldin, Alex | g | | 2557 | USA | 0.00 | 1 | -0.18 | 15 | -2.70 | |
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) | | |
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