Naumov Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Oct. 4, 2025 (latest changes Oct. 4, 2025).
259 place (105.24).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (727.27 * 2.10 * 0.14 + 347.83 * 2.10 * 0.43 + 137.25 * 3.05 * 0.71 + 0 + 0) / (2.10 * 0.14 + 2.10 * 0.43 + 3.05 * 0.71 + 1 + 1) = 154.37372705444463
p2 = (347.83 * 2.10 * 0.43 + 137.25 * 3.05 * 0.71 + 727.27 * 2.10 * 0.14) / max_coefficients = 56.104054054054046
score = 154.37372705444463 * 0.5 + 56.104054054054046 * 0.5 = 105.23889055424934
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-30 | 257 -> 259 | 113.87 -> 105.24 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-12 | 258 -> 257 | 113.87 | |
| 2025-09-03 | 267 -> 258 | 113.87 | |
| 2025-09-01 | 266 -> 267 | 113.04 -> 113.87 | |
| 2025-08-31 | 259 -> 266 | 113.04 | |
| 2025-08-26 | 260 -> 259 | 113.04 | |
| 2025-08-25 | 261 -> 260 | 113.04 | |
| 2025-08-22 | 258 -> 261 | 134.33 -> 113.04 |
Mushroom League: 29% -> 14% |
| 2025-08-09 | 258 | 134.41 -> 134.33 |
Agari Summer Tournament 2024: 86% -> 71% |
| 2025-08-04 | 258 | 134.02 -> 134.41 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 137 |
|
45/52 | 71% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow | |
| 2 | 348 |
|
31/47 | 43% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 3 | 727 |
|
7/23 | 14% | 2.10 | CRR | Mushroom League | Moscow |