Zarezin Ivan
From Yekaterinburg, Russia
EMA: 15020003
Common russian riichi rating (CRR)
Rating date June 27, 2025 (latest changes June 27, 2025).
40 place (608.54).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (631.58 * 2.10 * 0.14 + 703.70 * 2.30 * 0.43 + 851.85 * 2.30 * 0.57 + 401.87 * 4.60 * 0.86 + 808.51 * 2.80 * 1 + 873.42 * 3.65 * 1) / (2.10 * 0.14 + 2.30 * 0.43 + 2.30 * 0.57 + 4.60 * 0.86 + 2.80 * 1 + 3.65 * 1) = 695.6941371149295
p2 = (873.42 * 3.65 * 1 + 808.51 * 2.80 * 1 + 401.87 * 4.60 * 0.86 + 851.85 * 2.30 * 0.57) / max_coefficients = 521.3787169189895
score = 695.6941371149295 * 0.5 + 521.3787169189895 * 0.5 = 608.5364270169596
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-06-27 | 40 | 607.81 -> 608.54 |
13 tiles until tempai: 29% -> 14% |
| 2025-06-25 | 38 -> 40 | 618.66 -> 607.81 |
Chasing Kan: 71% -> 57% |
| 2025-06-15 | 37 -> 38 | 626.65 -> 618.66 | |
| 2025-06-11 | 38 -> 37 | 623.66 -> 626.65 |
Money can not buy tenpai: 14% -> 0% |
| 2025-06-09 | 39 -> 38 | 623.66 | |
| 2025-05-30 | 40 -> 39 | 623.66 | |
| 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% |