Bogatov Aleksei
From Samara, Russia
Common russian riichi rating (CRR)
Rating date Aug. 6, 2025 (latest changes Aug. 4, 2025).
207 place (225.42).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (556.96 * 3.65 * 0.86 + 238.10 * 2.60 * 1 + 157.14 * 3.50 * 1 + 0 + 0) / (3.65 * 0.86 + 2.60 * 1 + 3.50 * 1 + 1 + 1) = 259.29394308991965
p2 = (556.96 * 3.65 * 0.86 + 238.10 * 2.60 * 1 + 157.14 * 3.50 * 1) / max_coefficients = 191.5434210526316
score = 259.29394308991965 * 0.5 + 191.5434210526316 * 0.5 = 225.4186820712756
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-08-04 | 199 -> 207 | 240.55 -> 225.42 |
Riichi over Volga: 100% -> 86% |
2025-08-03 | 193 -> 199 | 240.55 | |
2025-07-30 | 197 -> 193 | 240.55 | |
2025-07-26 | 195 -> 197 | 240.55 | |
2025-07-19 | 196 -> 195 | 240.55 | |
2025-07-14 | 197 -> 196 | 240.55 | |
2025-07-13 | 194 -> 197 | 240.55 | |
2025-07-12 | 194 | 238.60 -> 240.55 | |
2025-07-03 | 197 -> 194 | 238.60 | |
2025-06-26 | 199 -> 197 | 238.60 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
---|---|---|---|---|---|---|---|---|---|
1 | 157 |
|
60/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
2 | 238 |
|
33/43 | 100% | 2.60 | RR | Riichi On Ice | Samara | |
3 | 557 |
|
36/80 | 86% | 3.65 | RR | Riichi over Volga | Samara |