Vinnichenko Aleksandr
From Simferopol, Russia
Common russian riichi rating (CRR)
Rating date Oct. 13, 2025 (latest changes Oct. 13, 2025).
188 place (252.53).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835
p1 = (466.67 * 1.80 * 1 + 533.33 * 2 * 1 + 391.30 * 1.20 * 1 + 0 + 0) / (1.80 * 1 + 2 * 1 + 1.20 * 1 + 1 + 1) = 339.46285714285716
p2 = (533.33 * 2 * 1 + 466.67 * 1.80 * 1 + 391.30 * 1.20 * 1) / max_coefficients = 165.59354166790072
score = 339.46285714285716 * 0.5 + 165.59354166790072 * 0.5 = 252.52819940537893
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-13 | 188 | 250.01 -> 252.53 | |
| 2025-10-09 | 189 -> 188 | 250.01 | |
| 2025-09-14 | 191 -> 189 | 250.01 | |
| 2025-09-05 | 192 -> 191 | 250.01 | |
| 2025-09-03 | 195 -> 192 | 250.01 | |
| 2025-09-01 | 195 | 247.90 -> 250.01 | |
| 2025-08-31 | 193 -> 195 | 247.90 | |
| 2025-08-25 | 194 -> 193 | 247.90 | |
| 2025-08-04 | 194 | 247.13 -> 247.90 | |
| 2025-08-03 | 188 -> 194 | 247.13 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 391 |
|
15/24 | 100% | 1.20 | CRR | Pands in discards | Simferopol | |
| 2 | 533 |
|
8/16 | 100% | 2.00 | RR | South Dragon Cup II | Simferopol | |
| 3 | 467 |
|
9/16 | 100% | 1.80 | CRR | Happy Bamboo 2024 | Simferopol |