Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date July 12, 2025 (latest changes July 12, 2025).
177 place (269.12).
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 * 0.71 + 645.16 * 1.80 * 0.86 + 0 + 0) / (3.05 * 0.57 + 2.10 * 0.71 + 1.80 * 0.86 + 1 + 1) = 373.2429652292067
p2 = (956.52 * 2.10 * 0.71 + 645.16 * 1.80 * 0.86 + 58.82 * 3.05 * 0.57) / max_coefficients = 164.99478827361565
score = 373.2429652292067 * 0.5 + 164.99478827361565 * 0.5 = 269.11887675141116
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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 | |
| 2025-06-09 | 179 -> 178 | 261.33 | |
| 2025-05-30 | 167 -> 179 | 282.77 -> 261.33 |
Seihoku spring tournament 2024: 86% -> 71% |
| 2025-05-19 | 162 -> 167 | 292.65 -> 282.77 |
"Green Dragon" in the Secret Chamber: 100% -> 86% |
| 2025-05-17 | 160 -> 162 | 292.65 | |
| 2025-05-12 | 162 -> 160 | 288.54 -> 292.65 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 645 |
|
12/32 | 86% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov |
| 2 | 957 |
|
3/47 | 71% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 3 | 59 |
|
49/52 | 57% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |