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Individual Calculations November 2021 |
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| Rex, Tobiah Total change: -15.60 | |   |
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| Mechanics Institute Tuesday Night Marathon September-October 2021 - Under 1800 | San Francisco, California | USA | 2021-09-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1426 | 1297 | 1.00 | 3 | -0.07 | 40 | -2.80 | |
|  Barreyro, Romeo | | | 1639 | USA | 0.00 | 1 | -0.12 | 40 | -4.80 | | | Starr, Albert | | | 1504 | USA | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Gulbis, Andrejs | | | 1134 | USA | 1.00 | 1 | 0.28 | 40 | 11.20 | |
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) | | | | 62nd Annual US Armed Forces Open Chess Championships - VOC | Grapevine, Texas | USA | 2021-10-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1433 | 1297 | 0.00 | 1 | -0.32 | 40 | -12.80 | |
| | Boyd, Thomas E | | | 1433 | USA | 0.00 | 1 | -0.32 | 40 | -12.80 | |
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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