Vinnichenko Aleksandr
From Simferopol, Russia
Common russian riichi rating (CRR)
Rating date Sept. 7, 2026 (latest changes Sept. 7, 2026).
125 place (425.66).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (466.67 * 1.80 * 0.14 + 533.33 * 2 * 0.57 + 391.30 * 1.20 * 0.86 + 956.52 * 1.20 * 1 + 631.58 * 1.30 * 1 + 580.65 * 1.80 * 1) / (1.80 * 0.14 + 2 * 0.57 + 1.20 * 0.86 + 1.20 * 1 + 1.30 * 1 + 1.80 * 1) = 616.185680697447
p2 = (956.52 * 1.20 * 1 + 580.65 * 1.80 * 1 + 631.58 * 1.30 * 1 + 533.33 * 2 * 0.57) / max_coefficients = 235.14146658014275
score = 616.185680697447 * 0.5 + 235.14146658014275 * 0.5 = 425.66357363879484
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-02 | 126 -> 125 | 425.66 | |
| 2026-09-01 | 128 -> 126 | 425.66 | |
| 2026-08-31 | 129 -> 128 | 425.28 -> 425.66 | |
| 2026-08-30 | 126 -> 129 | 425.28 | |
| 2026-08-27 | 127 -> 126 | 425.94 -> 425.28 |
South Dragon Cup II: 71% -> 57% Happy Bamboo 2024: 29% -> 14% |
| 2026-08-16 | 122 -> 127 | 425.94 | |
| 2026-08-15 | 121 -> 122 | 425.05 -> 425.94 | |
| 2026-08-13 | 122 -> 121 | 425.05 | |
| 2026-08-02 | 121 -> 122 | 425.05 | |
| 2026-08-01 | 120 -> 121 | 425.05 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 581 |
|
14/32 | 100% | 1.80 | RR | Seihoku Summer Tournament 2026 | Saint Petersburg | |
| 2 | 632 |
|
8/20 | 100% | 1.30 | CRR | The Southern Coon Mini Cup 2026 | Simferopol | |
| 3 | 957 |
|
🥈 | 2/24 | 100% | 1.20 | CRR | Riichi on fire | Simferopol |
| 4 | 391 |
|
15/24 | 86% | 1.20 | CRR | Pands in discards | Simferopol | |
| 5 | 533 |
|
8/16 | 57% | 2.00 | RR | South Dragon Cup II | Simferopol | |
| 6 | 467 |
|
9/16 | 14% | 1.80 | CRR | Happy Bamboo 2024 | Simferopol |