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Individual Calculations September 2023 |
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| Mazzarelli, Ariel Total change: -41.20 | |   |
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| 43rd Annual Lina Grumette Memorial | VAN NUYS, CA | USA | 2023-05-27 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1651 | 2075 | 1.00 | 3 | -1.79 | 20 | -35.80 | |
|  Golchin, Kevin | | | 1677 | USA | 0.00 | 1 | -0.92 | 20 | -18.40 | | | Wang, William Huang | | | 1675 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | |  Welch, Mason Jeffery | | | 1601 | USA | 0.00 | 1 | -0.95 | 20 | -19.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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) | | | | 2023 Calchess Senior Championship | Berkeley, Ca | USA | 2023-06-09 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1733 | 2075 | 4.00 | 5 | -0.27 | 20 | -5.40 | |
| | Oshima, Daniel T | | | 1642 | USA | 1.00 | 1 | 0.06 | 20 | 1.20 | | | Cooper, Lee | | | 1611 | USA | 0.00 | 1 | -0.95 | 20 | -19.00 | | | Boyd, Thomas E | | | 1675 * | USA | 1.00 | 1 | 0.08 | 20 | 1.60 | | | Oyunchimeg, Genden | | | 2029 | MGL | 1.00 | 1 | 0.44 | 20 | 8.80 | | | Del Rosario, Frisco | | | 1708 | USA | 1.00 | 1 | 0.10 | 20 | 2.00 | | | * Rating difference of more than 400. Please read more at FIDE Handbook |
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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