Ryazanov Aleksandr
From Samara, Russia
EMA: 15990057
Internal rating (RR)
Rating date Sept. 29, 2026 (latest changes Sept. 26, 2026).
240 place (131.18).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (719.10 * 3.75 * 0.14 + 23.81 * 2.60 * 0.29 + 314.29 * 3.50 * 0.57 + 0 + 0) / (3.75 * 0.14 + 2.60 * 0.29 + 3.50 * 0.57 + 1 + 1) = 195.42700282935135
p2 = (314.29 * 3.50 * 0.57 + 719.10 * 3.75 * 0.14 + 23.81 * 2.60 * 0.29) / max_coefficients = 66.94224529526281
score = 195.42700282935135 * 0.5 + 66.94224529526281 * 0.5 = 131.18462406230708
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-26 | 245 -> 240 | 125.83 -> 131.18 |
Riichi On Ice: 43% -> 29% |
| 2026-09-06 | 240 -> 245 | 125.83 | |
| 2026-09-03 | 231 -> 240 | 136.22 -> 125.83 |
Riichi over The Volga 2025: 71% -> 57% |
| 2026-09-02 | 232 -> 231 | 136.22 | |
| 2026-09-01 | 239 -> 232 | 136.22 | |
| 2026-08-31 | 238 -> 239 | 136.09 -> 136.22 | |
| 2026-08-27 | 239 -> 238 | 136.09 | |
| 2026-08-16 | 232 -> 239 | 136.09 | |
| 2026-08-15 | 232 | 135.81 -> 136.09 | |
| 2026-08-13 | 219 -> 232 | 169.17 -> 135.81 |
Moscow Riichi 2024: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 314 |
|
49/71 | 57% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 2 | 24 |
|
42/43 | 29% | 2.60 | RR | Riichi On Ice | Samara | |
| 3 | 719 |
|
26/90 | 14% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 570 |
|
35/80 | 0% | 3.65 | RR | Riichi over Volga | Samara | |
| 5 | 486 |
|
19/36 | 0% | 0.90 | EMA | Moscow Riichi 2011 | Moscow |