Vinnichenko Aleksandr
From Simferopol, Russia
Common russian riichi rating (CRR)
Rating date July 12, 2025 (latest changes July 12, 2025).
209 place (202.30).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
p1 = (466.67 * 1.80 * 1 + 533.33 * 2 * 1 + 0 + 0 + 0) / (1.80 * 1 + 2 * 1 + 1 + 1 + 1) = 280.39264705882357
p2 = (533.33 * 2 * 1 + 466.67 * 1.80 * 1) / max_coefficients = 124.21302931596092
score = 280.39264705882357 * 0.5 + 124.21302931596092 * 0.5 = 202.30283818739224
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-12 | 209 | 201.14 -> 202.30 | |
| 2025-07-03 | 213 -> 209 | 201.14 | |
| 2025-06-15 | 204 -> 213 | 202.95 -> 201.14 | |
| 2025-06-14 | 198 -> 204 | 202.95 | |
| 2025-06-11 | 205 -> 198 | 202.95 | |
| 2025-06-09 | 208 -> 205 | 202.95 | |
| 2025-05-17 | 206 -> 208 | 202.95 | |
| 2025-05-12 | 208 -> 206 | 200.34 -> 202.95 | |
| 2025-05-05 | 209 -> 208 | 200.34 | |
| 2025-05-03 | 207 -> 209 | 200.34 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 533 |
|
8/16 | 100% | 2.00 | RR | South Dragon Cup II | Simferopol |
| 2 | 467 |
|
9/16 | 100% | 1.80 | CRR | Happy Bamboo 2024 | Simferopol |