Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Internal rating (RR)
Rating date Nov. 28, 2023 (latest changes Nov. 28, 2023).
67 place (336.89).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 4.05 * 0.57) = 13.663990000000002
p1 = (358.21 * 3.50 * 0.29 + 440 * 4.20 * 0.86 + 540.23 * 3.75 * 1 + 0 + 0) / (3.50 * 0.29 + 4.20 * 0.86 + 3.75 * 1 + 1 + 1) = 383.38726367832334
p2 = (540.23 * 3.75 * 1 + 440 * 4.20 * 0.86 + 358.21 * 3.50 * 0.29) / max_coefficients = 290.3961434398005
score = 383.38726367832334 * 0.5 + 290.3961434398005 * 0.5 = 336.8917035590619
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-11-28 | 71 -> 67 | 336.89 | |
| 2023-11-20 | 71 | 342.87 -> 336.89 |
Tenpai can't buy happiness: 43% -> 29% |
| 2023-11-06 | 64 -> 71 | 343.80 -> 342.87 |
IX Russian Riichi Championship: 100% -> 86% |
| 2021-02-01 | 79 -> 64 | 439.90 -> 343.80 | |
| 2020-02-01 | 79 | 439.90 |