Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Common russian riichi rating (CRR)
Rating date Sept. 3, 2023 (latest changes Sept. 3, 2023).
57 place (426.00).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (631.58 * 2.10 * 1 + 440 * 4.20 * 1 + 540.23 * 3.75 * 1 + 358.21 * 3.50 * 0.57 + 0) / (2.10 * 1 + 4.20 * 1 + 3.75 * 1 + 3.50 * 0.57 + 1) = 453.3797193848228
p2 = (540.23 * 3.75 * 1 + 440 * 4.20 * 1 + 631.58 * 2.10 * 1 + 358.21 * 3.50 * 0.57) / max_coefficients = 398.6117282218486
score = 453.3797193848228 * 0.5 + 398.6117282218486 * 0.5 = 425.9957238033357
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-09-03 | 41 -> 57 | 443.53 -> 426.00 | |
| 2023-09-01 | 57 -> 41 | 390.54 -> 443.53 | |
| 2021-02-01 | 70 -> 57 | 496.26 -> 390.54 | |
| 2020-02-01 | 70 | 496.26 |