Dyuzhenkov Ivan
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Aug. 23, 2025 (latest changes Aug. 22, 2025).
285 place (47.20).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (96.77 * 3.10 * 1 + 78.43 * 3.05 * 1 + 0 + 0 + 0) / (3.10 * 1 + 3.05 * 1 + 1 + 1 + 1) = 58.93114754098361
p2 = (96.77 * 3.10 * 1 + 78.43 * 3.05 * 1) / max_coefficients = 35.475
score = 58.93114754098361 * 0.5 + 35.475 * 0.5 = 47.203073770491805
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-04 | 285 | 47.03 -> 47.20 | |
| 2025-08-03 | 280 -> 285 | 47.03 | |
| 2025-08-02 | 279 -> 280 | 47.03 | |
| 2025-07-26 | 274 -> 279 | 47.03 | |
| 2025-07-13 | 271 -> 274 | 47.03 | |
| 2025-07-12 | 271 | 46.70 -> 47.03 | |
| 2025-07-03 | 273 -> 271 | 46.70 | |
| 2025-06-27 | 274 -> 273 | 46.70 | |
| 2025-06-22 | 275 -> 274 | 46.70 | |
| 2025-06-15 | 266 -> 275 | 47.21 -> 46.70 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 78 |
|
48/52 | 100% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 2 | 97 |
|
29/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow |