Revin Ivan
From Novosibirsk, Russia
Common russian riichi rating (CRR)
Rating date Nov. 5, 2025 (latest changes Nov. 5, 2025).
285 place (27.12).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (66.67 * 1.60 * 0.43 + 83.33 * 2.20 * 1 + 0 + 0 + 0) / (1.60 * 0.43 + 2.20 * 1 + 1 + 1 + 1) = 38.9159598760398
p2 = (83.33 * 2.20 * 1 + 66.67 * 1.60 * 0.43) / max_coefficients = 15.321070234113714
score = 38.9159598760398 * 0.5 + 15.321070234113714 * 0.5 = 27.118515055076756
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-05 | 285 | 28.15 -> 27.12 |
Akademgorodok: Riichi Mahjong Tournament 2024: 57% -> 43% |
| 2025-11-04 | 281 -> 285 | 28.52 -> 28.15 | |
| 2025-11-01 | 281 | 28.49 -> 28.52 | |
| 2025-10-22 | 283 -> 281 | 28.49 | |
| 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 |
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 | 43% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk |