Epifanova Anna
From Saratov, Russia
Internal rating (RR)
Rating date May 22, 2026 (latest changes May 17, 2026).
158 place (271.42).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (557.14 * 3.50 * 0.86 + 372.09 * 3 * 1 + 181.82 * 3 * 1 + 142.86 * 2.90 * 1 + 0) / (3.50 * 0.86 + 3 * 1 + 3 * 1 + 2.90 * 1 + 1) = 290.4971763237557
p2 = (557.14 * 3.50 * 0.86 + 372.09 * 3 * 1 + 181.82 * 3 * 1 + 142.86 * 2.90 * 1) / max_coefficients = 252.34814814814814
score = 290.4971763237557 * 0.5 + 252.34814814814814 * 0.5 = 271.4226622359519
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-17 | 156 -> 158 | 271.42 | |
| 2026-05-14 | 155 -> 156 | 271.42 | |
| 2026-05-12 | 164 -> 155 | 271.42 | |
| 2026-05-03 | 160 -> 164 | 277.83 -> 271.42 |
Riichi over The Volga 2025: 100% -> 86% Sturgeon in tempai: 0% -> 100% |
| 2026-05-01 | 162 -> 160 | 277.83 | |
| 2026-04-19 | 158 -> 162 | 277.83 | |
| 2026-04-16 | 159 -> 158 | 277.83 | |
| 2026-04-13 | 161 -> 159 | 277.83 | |
| 2026-04-11 | 157 -> 161 | 277.83 | |
| 2026-04-05 | 153 -> 157 | 277.83 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 143 |
|
37/43 | 100% | 2.90 | RR | Sturgeon in tempai | Saratov | |
| 2 | 182 |
|
46/56 | 100% | 3.00 | RR | Riichi On Ice 2026 | Samara | |
| 3 | 372 |
|
28/44 | 100% | 3.00 | RR | Two roosters and Chuckles | Kirov | |
| 4 | 557 |
|
32/71 | 86% | 3.50 | RR | Riichi over The Volga 2025 | Samara |