Vinnichenko Aleksandr
From Simferopol, Russia
Common russian riichi rating (CRR)
Rating date July 31, 2026 (latest changes July 29, 2026).
120 place (425.05).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (466.67 * 1.80 * 0.29 + 533.33 * 2 * 0.71 + 391.30 * 1.20 * 0.86 + 956.52 * 1.20 * 1 + 631.58 * 1.30 * 1 + 580.65 * 1.80 * 1) / (1.80 * 0.29 + 2 * 0.71 + 1.20 * 0.86 + 1.20 * 1 + 1.30 * 1 + 1.80 * 1) = 607.6439410400777
p2 = (956.52 * 1.20 * 1 + 580.65 * 1.80 * 1 + 631.58 * 1.30 * 1 + 533.33 * 2 * 0.71) / max_coefficients = 242.45109351352986
score = 607.6439410400777 * 0.5 + 242.45109351352986 * 0.5 = 425.0475172768038
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-07-26 | 125 -> 120 | 422.56 -> 425.05 |
Pands in discards: 100% -> 86% |
| 2026-07-25 | 134 -> 125 | 407.59 -> 422.56 |
Seihoku Summer Tournament 2026: 0% -> 100% |
| 2026-07-18 | 132 -> 134 | 407.59 | |
| 2026-07-12 | 129 -> 132 | 407.59 | |
| 2026-07-11 | 128 -> 129 | 407.59 | |
| 2026-07-02 | 129 -> 128 | 407.59 | |
| 2026-06-27 | 129 | 407.74 -> 407.59 |
Happy Bamboo 2024: 43% -> 29% South Dragon Cup II: 86% -> 71% |
| 2026-06-15 | 129 | 403.84 -> 407.74 | |
| 2026-06-14 | 112 -> 129 | 412.99 -> 403.84 | |
| 2026-06-13 | 114 -> 112 | 412.99 |
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 | 71% | 2.00 | RR | South Dragon Cup II | Simferopol | |
| 6 | 467 |
|
9/16 | 29% | 1.80 | CRR | Happy Bamboo 2024 | Simferopol |