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Individual Calculations September 2019 |
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| Zhang, Boyuan Total change: 111.20 | |   |
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| Auckland Chess Centre - Club Champs C Grade | Auckland | NZL | 2019-06-17 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1550 | 1409 | 3.50 | 6 | 1.58 | 40 | 63.20 | |
|  Weng, Xintong (winston) | | | 1560 | NZL | 1.00 | 1 | 0.70 | 40 | 28.00 | |  Polyakevich, Arkadi | | | 1545 | RUS | 1.00 | 1 | 0.68 | 40 | 27.20 | | | Zhang, Kendrick | | | 1471 | NZL | 1.00 | 1 | 0.59 | 40 | 23.60 | | | Ravi, Narasimhan Lakshmi | | | 1427 | NZL | 0.00 | 1 | -0.47 | 40 | -18.80 | | | Ning, Isabelle Yixuan | | | 1576 | NZL | 0.00 | 1 | -0.28 | 40 | -11.20 | | | Wang, Aaron Ziwen | | | 1720 | NZL | 0.50 | 1 | 0.36 | 40 | 14.40 | |
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) | | | | Peter Stuart Memorial B-Grade 2019 | Auckland | NZL | 2019-08-25 |
| Rc | Ro | w | n | change | K | K*chg | Game |
| 1589 | 1455 | 2.50 | 4 | 1.20 | 40 | 48.00 | |
| | Holdo, Karl | | | 1608 | NZL | 0.50 | 1 | 0.20 | 40 | 8.00 | | | Ha, Huy Minh (timothy) | | | 1650 | NZL | 0.00 | 1 | -0.25 | 40 | -10.00 | | | Hooton, Barry R | | | 1498 | NZL | 1.00 | 1 | 0.56 | 40 | 22.40 | | | Park-Tamati, Philli | | | 1600 | NZL | 1.00 | 1 | 0.69 | 40 | 27.60 | |
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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