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Individual Calculations May 2021 |
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| Yu, Weiyang Total change: 41.60 | |   |
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| 2021 North Island Championship | Wellington | NZL | 2021-04-02 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1550 | 1150 | 1.00 | 5 | 0.60 | 40 | 24.00 | |
|  Pomeroy, Arthur J | | | 1550 * | NZL | 0.00 | 1 | -0.08 | 40 | -3.20 | |  Wells, Clinton A | | | 1550 * | NZL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Perrin, Brent | | | 1550 * | ENG | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Ackroyd, William | | | 1550 * | NZL | 1.00 | 1 | 0.92 | 40 | 36.80 | | | Ashe, Michael | | | 1550 * | NZL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | * 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) | | | | Auckland ANZAC Weekender 2021 | Auckland | NZL | 2021-04-24 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1471 | 1150 | 1.00 | 4 | 0.44 | 40 | 17.60 | |
| | Tang, Hao | | | 1550 * | NZL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Liu, Zikun Kenneth | | | 1550 * | NZL | 0.00 | 1 | -0.08 | 40 | -3.20 | | | Yu, Zachary | | | 1360 | NZL | 0.00 | 1 | -0.23 | 40 | -9.20 | | | Ng, Lauren | | | 1425 | NZL | 1.00 | 1 | 0.83 | 40 | 33.20 | | | * 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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