Ryazanov Aleksandr
From Samara, Russia
EMA: 15990057
Common russian riichi rating (CRR)
Rating date May 3, 2025 (latest changes May 3, 2025).
109 place (392.05).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (719.10 * 3.75 * 1 + 569.62 * 3.65 * 1 + 23.81 * 2.60 * 1 + 314.29 * 3.50 * 1 + 0) / (3.75 * 1 + 3.65 * 1 + 2.60 * 1 + 3.50 * 1 + 1) = 409.4924137931034
p2 = (719.10 * 3.75 * 1 + 569.62 * 3.65 * 1 + 314.29 * 3.50 * 1 + 23.81 * 2.60 * 1) / max_coefficients = 374.61451104100945
score = 409.4924137931034 * 0.5 + 374.61451104100945 * 0.5 = 392.05346241705644
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-05-03 | 128 -> 109 | 354.18 -> 392.05 |
Riichi over The Volga 2025: 0% -> 100% |
| 2025-04-27 | 124 -> 128 | 354.18 | |
| 2025-04-26 | 121 -> 124 | 354.18 | |
| 2025-04-22 | 122 -> 121 | 354.18 | |
| 2025-04-13 | 121 -> 122 | 354.18 | |
| 2025-03-03 | 123 -> 121 | 354.18 | |
| 2025-03-02 | 121 -> 123 | 354.18 | |
| 2025-02-25 | 125 -> 121 | 354.18 | |
| 2025-02-16 | 118 -> 125 | 354.18 | |
| 2025-02-02 | 114 -> 118 | 354.18 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 314 |
|
49/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |
| 2 | 24 |
|
42/43 | 100% | 2.60 | RR | Riichi On Ice | Samara |
| 3 | 719 |
|
26/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow |
| 4 | 570 |
|
35/80 | 100% | 3.65 | RR | Riichi over Volga | Samara |
| 5 | 316 |
|
14/20 | 0% | 1.30 | CRR | Mahjong tournament at the Intellectual Games Festival 2019 | Samara |
| 6 | 727 |
|
4/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 | Samara |
| 7 | 486 |
|
19/36 | 0% | 0.90 | EMA | Moscow Riichi 2011 | Moscow |