Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Internal rating (RR)
Rating date Feb. 11, 2025 (latest changes Feb. 11, 2025).
43 place (548.80).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (540.23 * 3.75 * 0.29 + 401.87 * 4.60 * 1 + 808.51 * 2.80 * 1 + 873.42 * 3.65 * 1 + 0) / (3.75 * 0.29 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 1) = 600.4850863571843
p2 = (873.42 * 3.65 * 1 + 808.51 * 2.80 * 1 + 401.87 * 4.60 * 1 + 540.23 * 3.75 * 0.29) / max_coefficients = 497.1097791798107
score = 600.4850863571843 * 0.5 + 497.1097791798107 * 0.5 = 548.7974327684975
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-11 | 43 | 556.75 -> 548.80 |
Money can not buy tenpai: 43% -> 29% |
| 2025-02-02 | 41 -> 43 | 556.75 | |
| 2025-01-26 | 40 -> 41 | 556.75 | |
| 2025-01-07 | 38 -> 40 | 556.75 | |
| 2025-01-03 | 39 -> 38 | 556.75 | |
| 2024-12-11 | 38 -> 39 | 564.78 -> 556.75 |
Money can not buy tenpai: 57% -> 43% |
| 2024-11-06 | 35 -> 38 | 582.99 -> 564.78 |
IX Russian Riichi Championship: 14% -> 0% |
| 2024-11-03 | 36 -> 35 | 582.99 | |
| 2024-10-13 | 31 -> 36 | 588.52 -> 582.99 | |
| 2024-10-11 | 31 | 596.12 -> 588.52 |
Money can not buy tenpai: 71% -> 57% |