Mamin Vladislav
From Saint Petersburg, Russia
EMA: 15990329
Common russian riichi rating (CRR)
Rating date Nov. 5, 2025 (latest changes Nov. 5, 2025).
196 place (242.53).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (521.74 * 2.10 * 0.43 + 115.79 * 3.85 * 0.71 + 833.33 * 2 * 1 + 0 + 0) / (2.10 * 0.43 + 3.85 * 0.71 + 2 * 1 + 1 + 1) = 320.87099344258223
p2 = (833.33 * 2 * 1 + 521.74 * 2.10 * 0.43 + 115.79 * 3.85 * 0.71) / max_coefficients = 164.19397993311037
score = 320.87099344258223 * 0.5 + 164.19397993311037 * 0.5 = 242.5324866878463
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-04 | 189 -> 196 | 246.26 -> 242.53 | |
| 2025-11-01 | 192 -> 189 | 241.31 -> 246.26 |
SPB Riichi Open 2024: 86% -> 71% |
| 2025-10-13 | 192 | 238.64 -> 241.31 | |
| 2025-10-09 | 193 -> 192 | 238.64 | |
| 2025-09-30 | 190 -> 193 | 247.71 -> 238.64 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-14 | 192 -> 190 | 247.71 | |
| 2025-09-05 | 193 -> 192 | 247.71 | |
| 2025-09-03 | 197 -> 193 | 247.71 | |
| 2025-09-01 | 199 -> 197 | 241.38 -> 247.71 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 197 -> 199 | 241.38 |