Bogatova Anna
From Samara, Russia
Internal rating (RR)
Rating date Nov. 2, 2025 (latest changes Nov. 1, 2025).
141 place (293.08).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3
p1 = (151.90 * 3.65 * 0.71 + 785.71 * 2.60 * 1 + 328.57 * 3.50 * 1 + 0 + 0) / (3.65 * 0.71 + 2.60 * 1 + 3.50 * 1 + 1 + 1) = 335.1848920282109
p2 = (785.71 * 2.60 * 1 + 328.57 * 3.50 * 1 + 151.90 * 3.65 * 0.71) / max_coefficients = 250.97132867132862
score = 335.1848920282109 * 0.5 + 250.97132867132862 * 0.5 = 293.07811034976976
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-01 | 144 -> 141 | 292.64 -> 293.08 | |
| 2025-10-13 | 147 -> 144 | 288.84 -> 292.64 | |
| 2025-10-04 | 148 -> 147 | 287.26 -> 288.84 |
Riichi over Volga: 86% -> 71% |
| 2025-09-30 | 149 -> 148 | 287.26 | |
| 2025-09-03 | 150 -> 149 | 287.26 | |
| 2025-09-01 | 150 | 284.00 -> 287.26 | |
| 2025-08-31 | 145 -> 150 | 284.00 | |
| 2025-08-09 | 146 -> 145 | 284.00 | |
| 2025-08-04 | 146 | 281.52 -> 284.00 |
Riichi over Volga: 100% -> 86% |
| 2025-08-03 | 139 -> 146 | 281.52 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 329 |
|
48/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 2 | 786 |
|
10/43 | 100% | 2.60 | RR | Riichi On Ice | Samara | |
| 3 | 152 |
|
68/80 | 71% | 3.65 | RR | Riichi over Volga | Samara |