Ryazanov Aleksandr
From Samara, Russia
EMA: 15990057
Common russian riichi rating (CRR)
Rating date Feb. 22, 2025 (latest changes Feb. 22, 2025).
125 place (354.18).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (569.62 * 3.65 * 1 + 719.10 * 3.75 * 1 + 23.81 * 2.60 * 1 + 0 + 0) / (3.65 * 1 + 3.75 * 1 + 2.60 * 1 + 1 + 1) = 403.1366666666666
p2 = (719.10 * 3.75 * 1 + 569.62 * 3.65 * 1 + 23.81 * 2.60 * 1) / max_coefficients = 305.2138801261829
score = 403.1366666666666 * 0.5 + 305.2138801261829 * 0.5 = 354.17527339642476
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-16 | 118 -> 125 | 354.18 | |
| 2025-02-02 | 114 -> 118 | 354.18 | |
| 2025-01-26 | 102 -> 114 | 380.26 -> 354.18 |
Riichi On Ice: 0% -> 100% |
| 2025-01-07 | 100 -> 102 | 380.26 | |
| 2025-01-05 | 101 -> 100 | 380.26 | |
| 2025-01-03 | 102 -> 101 | 380.26 | |
| 2024-12-26 | 103 -> 102 | 380.26 | |
| 2024-12-22 | 104 -> 103 | 380.26 | |
| 2024-12-18 | 106 -> 104 | 380.26 | |
| 2024-12-11 | 107 -> 106 | 380.26 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 24 |
|
42/43 | 100% | 2.60 | RR | Riichi On Ice |
| 2 | 719 |
|
26/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 3 | 570 |
|
35/80 | 100% | 3.65 | RR | Riichi over Volga |
| 4 | 316 |
|
14/20 | 0% | 1.30 | CRR | Mahjong tournament at the Intellectual Games Festival 2019 |
| 5 | 727 |
|
4/12 | 0% | 1.10 | CRR | Mahjong tournament at the Intellectual Games Festival 2017 |
| 6 | 486 |
|
19/36 | 0% | 0.90 | EMA | Moscow Riichi 2011 |