Kuropteva Ludmila
From Arkhangelsk, Russia
EMA: 15990300
Common russian riichi rating (CRR)
Rating date Feb. 1, 2021 (latest changes Feb. 1, 2021).
127 place (176.03).
how we calculated rating score
max_coefficients = (4.05 * 0.86 + 2.90 * 1 + 3.85 * 0.71 + 3.45 * 0.71) = 11.585645
p1 = (1000 * 2.20 * 0.14 + 272.73 * 2.50 * 0.57 + 407.41 * 2.30 * 0.57 + 0 + 0) / (2.20 * 0.14 + 2.50 * 0.57 + 2.30 * 0.57 + 1 + 1) = 245.07919558640324
p2 = (407.41 * 2.30 * 0.57 + 272.73 * 2.50 * 0.57 + 1000 * 2.20 * 0.14) / max_coefficients = 106.97634874881804
score = 245.07919558640324 * 0.5 + 106.97634874881804 * 0.5 = 176.02777216761064
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2021-02-01 | 75 -> 127 | 484.64 -> 176.03 | |
| 2020-02-01 | 75 | 484.64 |