Epifanova Anna
From Saratov, Russia
Common russian riichi rating (CRR)
Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).
127 place (375.53).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (557.14 * 3.50 * 1 + 372.09 * 3 * 1 + 913.04 * 1.60 * 1 + 0 + 0) / (3.50 * 1 + 3 * 1 + 1.60 * 1 + 1 + 1) = 448.23267326732673
p2 = (557.14 * 3.50 * 1 + 913.04 * 1.60 * 1 + 372.09 * 3 * 1) / max_coefficients = 302.81939799331104
score = 448.23267326732673 * 0.5 + 302.81939799331104 * 0.5 = 375.5260356303189
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-09 | 129 -> 127 | 375.53 | |
| 2025-12-07 | 125 -> 129 | 375.53 | |
| 2025-11-30 | 124 -> 125 | 375.53 | |
| 2025-11-25 | 123 -> 124 | 375.53 | |
| 2025-11-22 | 183 -> 123 | 263.93 -> 375.53 |
San-Biki Cup: 0% -> 100% |
| 2025-11-15 | 184 -> 183 | 263.93 | |
| 2025-11-12 | 185 -> 184 | 263.93 | |
| 2025-11-05 | 187 -> 185 | 263.93 | |
| 2025-11-04 | 181 -> 187 | 268.60 -> 263.93 | |
| 2025-11-01 | 182 -> 181 | 268.22 -> 268.60 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 913 |
|
🥉 | 3/24 | 100% | 1.60 | CRR | San-Biki Cup | Saratov |
| 2 | 372 |
|
28/44 | 100% | 3.00 | RR | Two roosters and Chuckles | Kirov | |
| 3 | 557 |
|
32/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara |