Naumov Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).
286 place (52.53).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (347.83 * 2.10 * 0.29 + 137.25 * 3.05 * 0.43 + 0 + 0 + 0) / (2.10 * 0.29 + 3.05 * 0.43 + 1 + 1 + 1) = 79.0899087055755
p2 = (347.83 * 2.10 * 0.29 + 137.25 * 3.05 * 0.43) / max_coefficients = 25.960535117056857
score = 79.0899087055755 * 0.5 + 25.960535117056857 * 0.5 = 52.52522191131618
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-09 | 283 -> 286 | 56.90 -> 52.53 |
Agari Summer Tournament 2024: 57% -> 43% |
| 2025-12-07 | 280 -> 283 | 56.90 | |
| 2025-12-06 | 275 -> 280 | 56.90 | |
| 2025-11-30 | 273 -> 275 | 67.40 -> 56.90 |
Seihoku spring tournament 2024: 43% -> 29% |
| 2025-11-25 | 274 -> 273 | 67.40 | |
| 2025-11-10 | 275 -> 274 | 67.40 | |
| 2025-11-04 | 270 -> 275 | 68.24 -> 67.40 | |
| 2025-11-01 | 270 | 68.18 -> 68.24 | |
| 2025-10-22 | 260 -> 270 | 104.79 -> 68.18 |
Mushroom League: 14% -> 0% |
| 2025-10-13 | 260 | 103.97 -> 104.79 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 137 |
|
45/52 | 43% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 2 | 348 |
|
31/47 | 29% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 3 | 727 |
|
7/23 | 0% | 2.10 | CRR | Mushroom League | Moscow |