Druzhinina Alexandra
From Korolyov, Russia
Common russian riichi rating (CRR)
Rating date Oct. 10, 2025 (latest changes Oct. 9, 2025).
203 place (207.03).
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 + 645.16 * 1.80 * 0.57 + 956.52 * 2.10 * 0.43 + 0 + 0) / (3.05 * 0.43 + 1.80 * 0.57 + 2.10 * 0.43 + 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 = 108.20202702702701
score = 305.85334456368736 * 0.5 + 108.20202702702701 * 0.5 = 207.02768579535717
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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 | |
| 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 |
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 |