Sotnikova Anna
From Kirov, Russia
Internal rating (RR)
Rating date Nov. 1, 2025 (latest changes Nov. 1, 2025).
184 place (173.34).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.25 * 1) = 14.3
p1 = (419.35 * 3.10 * 1 + 209.30 * 3 * 1 + 0 + 0 + 0) / (3.10 * 1 + 3 * 1 + 1 + 1 + 1) = 211.85824175824175
p2 = (419.35 * 3.10 * 1 + 209.30 * 3 * 1) / max_coefficients = 134.8188811188811
score = 211.85824175824175 * 0.5 + 134.8188811188811 * 0.5 = 173.33856143856144
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-01 | 184 | 173.10 -> 173.34 | |
| 2025-10-13 | 184 | 171.06 -> 173.10 | |
| 2025-10-09 | 185 -> 184 | 171.06 | |
| 2025-10-04 | 187 -> 185 | 171.06 | |
| 2025-09-14 | 188 -> 187 | 171.06 | |
| 2025-09-12 | 189 -> 188 | 171.06 | |
| 2025-09-10 | 190 -> 189 | 171.06 | |
| 2025-09-03 | 194 -> 190 | 171.06 | |
| 2025-09-01 | 194 | 169.35 -> 171.06 | |
| 2025-08-31 | 187 -> 194 | 169.35 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 209 |
|
35/44 | 100% | 3.00 | RR | Two roosters and Chuckles | Kirov | |
| 2 | 419 |
|
19/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon | Moscow | |
| 3 | 400 |
|
34/56 | 0% | 3.30 | RR | Kirov Tournament | Kirov |