Bogatov Aleksei
From Samara, Russia
Internal rating (RR)
Rating date July 5, 2026 (latest changes July 3, 2026).
236 place (99.21).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (556.96 * 3.65 * 0.14 + 238.10 * 2.60 * 0.57 + 157.14 * 3.50 * 0.71 + 18.18 * 3 * 1 + 0) / (3.65 * 0.14 + 2.60 * 0.57 + 3.50 * 0.71 + 3 * 1 + 1) = 128.31840983158534
p2 = (157.14 * 3.50 * 0.71 + 238.10 * 2.60 * 0.57 + 556.96 * 3.65 * 0.14 + 18.18 * 3 * 1) / max_coefficients = 70.0932509144985
score = 128.31840983158534 * 0.5 + 70.0932509144985 * 0.5 = 99.20583037304192
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-07-03 | 235 -> 236 | 102.53 -> 99.21 |
Riichi over The Volga 2025: 86% -> 71% |
| 2026-06-15 | 235 | 101.16 -> 102.53 | |
| 2026-06-14 | 219 -> 235 | 104.36 -> 101.16 | |
| 2026-06-13 | 220 -> 219 | 104.36 | |
| 2026-06-09 | 223 -> 220 | 104.36 | |
| 2026-06-04 | 220 -> 223 | 125.81 -> 104.36 |
Riichi over Volga: 29% -> 14% |
| 2026-05-26 | 219 -> 220 | 130.38 -> 125.81 |
Riichi On Ice: 71% -> 57% |
| 2026-05-17 | 218 -> 219 | 130.38 | |
| 2026-05-14 | 219 -> 218 | 130.38 | |
| 2026-05-12 | 227 -> 219 | 130.38 |
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 | 71% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 3 | 238 |
|
33/43 | 57% | 2.60 | RR | Riichi On Ice | Samara | |
| 4 | 557 |
|
36/80 | 14% | 3.65 | RR | Riichi over Volga | Samara |