Bogatov Aleksei
From Samara, Russia
Common russian riichi rating (CRR)
Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).
201 place (210.95).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (157.14 * 3.50 * 1 + 556.96 * 3.65 * 0.71 + 238.10 * 2.60 * 1 + 0 + 0) / (3.50 * 1 + 3.65 * 0.71 + 2.60 * 1 + 1 + 1) = 244.8036110297795
p2 = (556.96 * 3.65 * 0.71 + 238.10 * 2.60 * 1 + 157.14 * 3.50 * 1) / max_coefficients = 177.10540540540538
score = 244.8036110297795 * 0.5 + 177.10540540540538 * 0.5 = 210.95450821759243
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-09 | 202 -> 201 | 210.95 | |
| 2025-10-04 | 196 -> 202 | 228.01 -> 210.95 |
Riichi over Volga: 86% -> 71% |
| 2025-09-30 | 197 -> 196 | 228.01 | |
| 2025-09-15 | 198 -> 197 | 228.01 | |
| 2025-09-12 | 200 -> 198 | 228.01 | |
| 2025-09-03 | 206 -> 200 | 228.01 | |
| 2025-09-01 | 207 -> 206 | 225.42 -> 228.01 | |
| 2025-08-31 | 205 -> 207 | 225.42 | |
| 2025-08-25 | 206 -> 205 | 225.42 | |
| 2025-08-09 | 207 -> 206 | 225.42 |
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 | 71% | 3.65 | RR | Riichi over Volga | Samara |