Naumov Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date June 14, 2025 (latest changes June 14, 2025).
227 place (159.95).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (727.27 * 2.10 * 0.43 + 347.83 * 2.10 * 0.71 + 137.25 * 3.05 * 0.86 + 0 + 0) / (2.10 * 0.43 + 2.10 * 0.71 + 3.05 * 0.86 + 1 + 1) = 218.86175917721724
p2 = (727.27 * 2.10 * 0.43 + 347.83 * 2.10 * 0.71 + 137.25 * 3.05 * 0.86) / max_coefficients = 101.04550486879849
score = 218.86175917721724 * 0.5 + 101.04550486879849 * 0.5 = 159.95363202300786
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-06-14 | 220 -> 227 | 159.95 | |
| 2025-06-11 | 226 -> 220 | 159.95 | |
| 2025-06-09 | 226 | 159.54 -> 159.95 |
Agari Summer Tournament 2024: 100% -> 86% |
| 2025-05-30 | 224 -> 226 | 165.56 -> 159.54 |
Seihoku spring tournament 2024: 86% -> 71% |
| 2025-05-19 | 225 -> 224 | 165.56 | |
| 2025-05-17 | 222 -> 225 | 165.56 | |
| 2025-05-12 | 222 | 163.24 -> 165.56 | |
| 2025-05-03 | 219 -> 222 | 163.24 | |
| 2025-04-27 | 213 -> 219 | 163.24 | |
| 2025-04-26 | 212 -> 213 | 163.24 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 137 |
|
45/52 | 86% | 3.05 | RR | Agari Summer Tournament 2024 | Moscow |
| 2 | 348 |
|
31/47 | 71% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 3 | 727 |
|
7/23 | 43% | 2.10 | CRR | Mushroom League | Moscow |