Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Sept. 4, 2025 (latest changes Sept. 3, 2025).
197 place (237.22).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (58.82 * 3.05 * 0.57 + 956.52 * 2.10 * 0.57 + 645.16 * 1.80 * 0.71 + 0 + 0) / (3.05 * 0.57 + 2.10 * 0.57 + 1.80 * 0.71 + 1 + 1) = 333.9193539323588
p2 = (956.52 * 2.10 * 0.57 + 645.16 * 1.80 * 0.71 + 58.82 * 3.05 * 0.57) / max_coefficients = 140.52702702702703
score = 333.9193539323588 * 0.5 + 140.52702702702703 * 0.5 = 237.2231904796929
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 202 -> 197 | 237.22 | |
| 2025-09-01 | 201 -> 202 | 235.37 -> 237.22 | |
| 2025-08-31 | 199 -> 201 | 235.37 | |
| 2025-08-26 | 200 -> 199 | 235.37 | |
| 2025-08-22 | 201 -> 200 | 235.37 | |
| 2025-08-09 | 202 -> 201 | 235.37 | |
| 2025-08-04 | 205 -> 202 | 234.71 -> 235.37 | |
| 2025-08-03 | 199 -> 205 | 234.71 | |
| 2025-07-30 | 187 -> 199 | 258.36 -> 234.71 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-26 | 185 -> 187 | 258.36 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 645 |
|
12/32 | 71% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 2 | 957 |
|
🥉 | 3/47 | 57% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 3 | 59 |
|
49/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |