Petrushin Artem
From Irkutsk, Russia
Common russian riichi rating (CRR)
Rating date Jan. 5, 2025 (latest changes Jan. 5, 2025).
200 place (104.59).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (727.27 * 0.90 * 1 + 133.33 * 1 * 0.29 + 0 + 0 + 0) / (0.90 * 1 + 1 * 0.29 + 1 + 1 + 1) = 165.47769787610198
p2 = (727.27 * 0.90 * 1 + 133.33 * 1 * 0.29) / max_coefficients = 43.69968454258675
score = 165.47769787610198 * 0.5 + 43.69968454258675 * 0.5 = 104.58869120934438
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-04 | 198 -> 200 | 104.59 | |
| 2025-01-01 | 199 -> 198 | 104.66 -> 104.59 |
Spring Tournament Irkutsk 2023: 43% -> 29% |
| 2024-12-29 | 198 -> 199 | 104.66 | |
| 2024-11-05 | 203 -> 198 | 104.66 | |
| 2024-11-04 | 203 | 104.66 |
Irkutsk autumn tournament 2024: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 727 |
|
4/12 | 100% | 0.90 | CRR | Irkutsk autumn tournament 2024 |
| 2 | 133 |
|
14/16 | 29% | 1.00 | CRR | Spring Tournament Irkutsk 2023 |