USHAKOV Igor
From Moscow, Russia
EMA: 15990490
Internal rating (RR)
Rating date Aug. 31, 2025 (latest changes Aug. 31, 2025).
182 place (194.97).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (697.67 * 3 * 1 + 51.95 * 3.45 * 1 + 0 + 0 + 0) / (3 * 1 + 3.45 * 1 + 1 + 1 + 1) = 240.44867724867726
p2 = (697.67 * 3 * 1 + 51.95 * 3.45 * 1) / max_coefficients = 149.4894736842105
score = 240.44867724867726 * 0.5 + 149.4894736842105 * 0.5 = 194.96907546644388
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-31 | 182 | 194.97 |
SPB Riichi Open 2025: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 52 |
|
74/78 | 100% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 2 | 698 |
|
14/44 | 100% | 3.00 | RR | Two roosters and Chuckles | Kirov |