Dyuzhenkov Ivan
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Nov. 1, 2025 (latest changes Nov. 1, 2025).
276 place (48.32).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3
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 = 37.707692307692305
score = 58.93114754098361 * 0.5 + 37.707692307692305 * 0.5 = 48.31941992433796
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-01 | 276 | 48.25 -> 48.32 | |
| 2025-10-22 | 278 -> 276 | 48.25 | |
| 2025-10-13 | 278 | 47.68 -> 48.25 | |
| 2025-09-30 | 279 -> 278 | 47.68 | |
| 2025-09-03 | 289 -> 279 | 47.68 | |
| 2025-09-01 | 289 | 47.20 -> 47.68 | |
| 2025-08-31 | 283 -> 289 | 47.20 | |
| 2025-08-26 | 284 -> 283 | 47.20 | |
| 2025-08-25 | 285 -> 284 | 47.20 | |
| 2025-08-04 | 285 | 47.03 -> 47.20 |
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 |