Revin Ivan
From Novosibirsk, Russia
Common russian riichi rating (CRR)
Rating date Oct. 13, 2025 (latest changes Oct. 13, 2025).
283 place (28.49).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835
p1 = (66.67 * 1.60 * 0.57 + 83.33 * 2.20 * 1 + 0 + 0 + 0) / (1.60 * 0.57 + 2.20 * 1 + 1 + 1 + 1) = 39.95263515988905
p2 = (83.33 * 2.20 * 1 + 66.67 * 1.60 * 0.57) / max_coefficients = 17.02319225273322
score = 39.95263515988905 * 0.5 + 17.02319225273322 * 0.5 = 28.487913706311133
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-13 | 283 | 28.23 -> 28.49 | |
| 2025-09-05 | 283 | 29.23 -> 28.23 |
Akademgorodok: Riichi Mahjong Tournament 2024: 71% -> 57% |
| 2025-09-03 | 295 -> 283 | 29.23 | |
| 2025-09-01 | 296 -> 295 | 28.99 -> 29.23 | |
| 2025-08-31 | 289 -> 296 | 28.99 | |
| 2025-08-26 | 291 -> 289 | 28.99 | |
| 2025-08-25 | 292 -> 291 | 28.99 | |
| 2025-08-22 | 293 -> 292 | 28.99 | |
| 2025-08-04 | 293 | 28.91 -> 28.99 | |
| 2025-08-03 | 288 -> 293 | 28.91 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 83 |
|
23/25 | 100% | 2.20 | CRR | Akademgorodok Riichi Mahjong Tournament 2025 | Novosibirsk | |
| 2 | 67 |
|
15/16 | 57% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk |