Sotnikova Anna
From Kirov, Russia
Internal rating (RR)
Rating date Sept. 6, 2025 (latest changes Sept. 3, 2025).
190 place (171.06).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
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 = 130.26418918918918
score = 211.85824175824175 * 0.5 + 130.26418918918918 * 0.5 = 171.06121547371546
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 194 -> 190 | 171.06 | |
| 2025-09-01 | 194 | 169.35 -> 171.06 | |
| 2025-08-31 | 187 -> 194 | 169.35 | |
| 2025-08-04 | 187 | 168.73 -> 169.35 | |
| 2025-08-03 | 187 | 168.73 |
Two roosters and Chuckles: 0% -> 100% |
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 |