Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).
237 place (169.88).
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 * 0.29 + 956.52 * 2.10 * 0.29 + 645.16 * 1.80 * 0.43 + 0 + 0) / (3.05 * 0.29 + 2.10 * 0.29 + 1.80 * 0.43 + 1 + 1) = 264.650876124101
p2 = (956.52 * 2.10 * 0.29 + 645.16 * 1.80 * 0.43 + 58.82 * 3.05 * 0.29) / max_coefficients = 75.10836120401339
score = 264.650876124101 * 0.5 + 75.10836120401339 * 0.5 = 169.8796186640572
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-09 | 238 -> 237 | 169.88 | |
| 2025-12-07 | 235 -> 238 | 169.88 | |
| 2025-12-06 | 234 -> 235 | 169.88 | |
| 2025-12-04 | 237 -> 234 | 169.88 | |
| 2025-11-30 | 211 -> 237 | 202.33 -> 169.88 |
Seihoku spring tournament 2024: 43% -> 29% |
| 2025-11-25 | 212 -> 211 | 202.33 | |
| 2025-11-22 | 210 -> 212 | 202.33 | |
| 2025-11-19 | 202 -> 210 | 216.84 -> 202.33 |
"Green Dragon" in the Secret Chamber: 57% -> 43% |
| 2025-11-14 | 203 -> 202 | 216.84 | |
| 2025-11-12 | 204 -> 203 | 216.84 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 645 |
|
12/32 | 43% | 1.80 | CRR | "Green Dragon" in the Secret Chamber | Korolyov | |
| 2 | 957 |
|
🥉 | 3/47 | 29% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 3 | 59 |
|
49/52 | 29% | 3.05 | RR | Agari Spring Tournament 2024 | Moscow |