Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Common russian riichi rating (CRR)
Rating date May 13, 2025 (latest changes May 12, 2025).
40 place (623.66).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (808.51 * 2.80 * 1 + 873.42 * 3.65 * 1 + 540.23 * 3.75 * 0.14 + 631.58 * 2.10 * 0.29 + 703.70 * 2.30 * 0.43 + 851.85 * 2.30 * 0.71 + 401.87 * 4.60 * 0.86) / (2.80 * 1 + 3.65 * 1 + 3.75 * 0.14 + 2.10 * 0.29 + 2.30 * 0.43 + 2.30 * 0.71 + 4.60 * 0.86) = 692.0773388758705
p2 = (873.42 * 3.65 * 1 + 808.51 * 2.80 * 1 + 401.87 * 4.60 * 0.86 + 851.85 * 2.30 * 0.71) / max_coefficients = 555.2503643206653
score = 692.0773388758705 * 0.5 + 555.2503643206653 * 0.5 = 623.6638515982679
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-12 | 42 -> 40 | 614.05 -> 623.66 |
X Russian Championship: 100% -> 86% |
| 2025-05-05 | 42 | 614.31 -> 614.05 |
Finding Dora: 57% -> 43% |
| 2025-05-03 | 34 -> 42 | 614.31 | |
| 2025-04-27 | 34 | 613.84 -> 614.31 |
13 tiles until tempai: 43% -> 29% |
| 2025-04-26 | 33 -> 34 | 613.84 | |
| 2025-04-25 | 28 -> 33 | 624.47 -> 613.84 |
Chasing Kan: 86% -> 71% |
| 2025-04-11 | 29 -> 28 | 622.14 -> 624.47 |
Money can not buy tenpai: 29% -> 14% |
| 2025-03-26 | 31 -> 29 | 622.14 | |
| 2025-03-10 | 32 -> 31 | 622.14 | |
| 2025-03-05 | 32 | 622.39 -> 622.14 |
Finding Dora: 71% -> 57% |