Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Nov. 5, 2025 (latest changes Nov. 5, 2025).
209 place (206.48).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (58.82 * 3.05 * 0.43 + 956.52 * 2.10 * 0.43 + 645.16 * 1.80 * 0.57 + 0 + 0) / (3.05 * 0.43 + 2.10 * 0.43 + 1.80 * 0.57 + 1 + 1) = 305.85334456368736
p2 = (956.52 * 2.10 * 0.43 + 645.16 * 1.80 * 0.57 + 58.82 * 3.05 * 0.43) / max_coefficients = 107.11638795986622
score = 305.85334456368736 * 0.5 + 107.11638795986622 * 0.5 = 206.4848662617768
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-04 | 201 -> 209 | 208.92 -> 206.48 | |
| 2025-11-01 | 202 -> 201 | 208.72 -> 208.92 | |
| 2025-10-22 | 203 -> 202 | 208.72 | |
| 2025-10-13 | 203 | 207.03 -> 208.72 | |
| 2025-10-09 | 204 -> 203 | 207.03 | |
| 2025-10-04 | 205 -> 204 | 207.03 | |
| 2025-09-30 | 194 -> 205 | 234.34 -> 207.03 |
Seihoku spring tournament 2024: 57% -> 43% |
| 2025-09-19 | 192 -> 194 | 246.70 -> 234.34 |
"Green Dragon" in the Secret Chamber: 71% -> 57% |
| 2025-09-14 | 193 -> 192 | 246.70 | |
| 2025-09-12 | 194 -> 193 | 246.70 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 645 |
|
12/32 | 57% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 2 | 957 |
|
🥉 | 3/47 | 43% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 3 | 59 |
|
49/52 | 43% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |