Bogatov Aleksei
From Samara, Russia
Internal rating (RR)
Rating date Sept. 4, 2026 (latest changes Sept. 3, 2026).
254 place (59.65).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (238.10 * 2.60 * 0.43 + 157.14 * 3.50 * 0.57 + 18.18 * 3 * 1 + 0 + 0) / (2.60 * 0.43 + 3.50 * 0.57 + 3 * 1 + 1 + 1) = 78.15130400061126
p2 = (157.14 * 3.50 * 0.57 + 238.10 * 2.60 * 0.43 + 18.18 * 3 * 1) / max_coefficients = 41.1512005191434
score = 78.15130400061126 * 0.5 + 41.1512005191434 * 0.5 = 59.65125225987733
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-03 | 253 -> 254 | 64.49 -> 59.65 |
Riichi over The Volga 2025: 71% -> 57% |
| 2026-09-01 | 257 -> 253 | 64.49 | |
| 2026-08-31 | 257 | 64.42 -> 64.49 | |
| 2026-08-16 | 251 -> 257 | 64.42 | |
| 2026-08-15 | 252 -> 251 | 64.25 -> 64.42 | |
| 2026-08-04 | 254 -> 252 | 93.86 -> 64.25 |
Riichi over Volga: 14% -> 0% |
| 2026-08-02 | 252 -> 254 | 93.86 | |
| 2026-07-26 | 250 -> 252 | 99.21 -> 93.86 |
Riichi On Ice: 57% -> 43% |
| 2026-07-25 | 246 -> 250 | 99.21 | |
| 2026-07-18 | 238 -> 246 | 99.21 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 18 |
|
55/56 | 100% | 3.00 | RR | Riichi On Ice 2026 | Samara | |
| 2 | 157 |
|
60/71 | 57% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 3 | 238 |
|
33/43 | 43% | 2.60 | RR | Riichi On Ice | Samara | |
| 4 | 557 |
|
36/80 | 0% | 3.65 | RR | Riichi over Volga | Samara |