Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Aug. 2, 2025 (latest changes July 30, 2025).
199 place (234.71).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
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 = 135.49185667752445
score = 333.9193539323588 * 0.5 + 135.49185667752445 * 0.5 = 234.70560530494163
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-30 | 187 -> 199 | 258.36 -> 234.71 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-26 | 185 -> 187 | 258.36 | |
| 2025-07-19 | 179 -> 185 | 269.12 -> 258.36 |
"Green Dragon" in the Secret Chamber: 86% -> 71% |
| 2025-07-14 | 180 -> 179 | 269.12 | |
| 2025-07-13 | 177 -> 180 | 269.12 | |
| 2025-07-12 | 178 -> 177 | 267.58 -> 269.12 | |
| 2025-07-10 | 182 -> 178 | 258.91 -> 267.58 |
Agari Spring Tournament 2024: 71% -> 57% |
| 2025-06-15 | 173 -> 182 | 261.33 -> 258.91 | |
| 2025-06-14 | 170 -> 173 | 261.33 | |
| 2025-06-11 | 178 -> 170 | 261.33 |
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 |