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Individual Calculations June 2023 |
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| Mbonu, David Total change: -22.80 | |   |
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| Marshall FIDE Monday March-April 2023 Rounds 5-6 | New York, NY | USA | 2023-04-03 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1942 | 2004 | 1.50 | 2 | 0.33 | 20 | 6.60 | |
|  Olsen, Robert | | | 1886 | USA | 0.50 | 1 | -0.16 | 20 | -3.20 | |  Rand, Steven | | | 1998 | USA | 1.00 | 1 | 0.49 | 20 | 9.80 | |
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) | | | | 2023 April Marshall Premier | New York, NY | USA | 2023-04-07 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1885 | 2004 | 2.50 | 5 | -0.78 | 20 | -15.60 | |
| | Chakka, Pardhav | | | 1863 | USA | 0.00 | 1 | -0.69 | 20 | -13.80 | | | Berg, George | | | 1777 | USA | 0.50 | 1 | -0.29 | 20 | -5.80 | | | Buchanan, Royal | | | 1820 | USA | 0.50 | 1 | -0.24 | 20 | -4.80 | | | Marsh, James | | | 1969 | USA | 1.00 | 1 | 0.45 | 20 | 9.00 | | | Rand, Steven | | | 1998 | USA | 0.50 | 1 | -0.01 | 20 | -0.20 | |
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) | | | | Marshall FIDE Monday April-May 2023 Rounds 1-2 | New York, NY | USA | 2023-04-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1778 | 2004 | 1.00 | 2 | -0.57 | 20 | -11.40 | |
| | Zhu, Linxi | | | 1779 | USA | 0.00 | 1 | -0.78 | 20 | -15.60 | | | Berg, George | | | 1777 | USA | 1.00 | 1 | 0.21 | 20 | 4.20 | |
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) | | | | Marshall FIDE Monday April-May 2023 Rounds 3-6 | New York, NY | USA | 2023-05-01 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1872 | 2004 | 2.50 | 4 | -0.12 | 20 | -2.40 | |
| | Kozower, Ethan | | | 1859 | USA | 0.50 | 1 | -0.19 | 20 | -3.80 | | | Goodrich, Elliott | | | 1658 | USA | 1.00 | 1 | 0.11 | 20 | 2.20 | | | Wang, Nancy | | | 1836 | USA | 1.00 | 1 | 0.28 | 20 | 5.60 | | | Herbst, Richard | | | 2134 | USA | 0.00 | 1 | -0.32 | 20 | -6.40 | |
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) | | |
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