Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Sept. 13, 2025 (latest changes Sept. 12, 2025).
193 place (246.70).
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 * 0.43 + 956.52 * 2.10 * 0.57 + 645.16 * 1.80 * 0.71 + 0 + 0) / (3.05 * 0.43 + 2.10 * 0.57 + 1.80 * 0.71 + 1 + 1) = 354.60243642659736
p2 = (956.52 * 2.10 * 0.57 + 645.16 * 1.80 * 0.71 + 58.82 * 3.05 * 0.43) / max_coefficients = 138.79594594594593
score = 354.60243642659736 * 0.5 + 138.79594594594593 * 0.5 = 246.69919118627166
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-12 | 194 -> 193 | 246.70 | |
| 2025-09-10 | 195 -> 194 | 237.22 -> 246.70 |
Agari Spring Tournament 2024: 57% -> 43% |
| 2025-09-05 | 197 -> 195 | 237.22 | |
| 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 |
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 | 43% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |