Petrushin Ivan
From Irkutsk, Russia
Common russian riichi rating (CRR)
Rating date March 30, 2024 (latest changes March 30, 2024).
154 place (152.39).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 2.90 * 1) = 13.700000000000001
p1 = (866.67 * 1 * 1 + 272.73 * 1.10 * 0.71 + 0 + 0 + 0) / (1 * 1 + 1.10 * 0.71 + 1 + 1 + 1) = 225.8714971383676
p2 = (866.67 * 1 * 1 + 272.73 * 1.10 * 0.71) / max_coefficients = 78.90218978102189
score = 225.8714971383676 * 0.5 + 78.90218978102189 * 0.5 = 152.38684345969475
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-03-30 | 147 -> 154 | 152.39 | |
| 2024-03-20 | 153 -> 147 | 152.39 | |
| 2024-03-14 | 152 -> 153 | 154.69 -> 152.39 |
Survive after yakuman: 86% -> 71% |
| 2024-03-10 | 149 -> 152 | 156.74 -> 154.69 | |
| 2024-03-06 | 148 -> 149 | 154.84 -> 156.74 | |
| 2024-02-25 | 144 -> 148 | 154.84 | |
| 2024-02-12 | 146 -> 144 | 154.84 | |
| 2024-01-20 | 148 -> 146 | 154.84 | |
| 2024-01-14 | 148 | 157.11 -> 154.84 |
Survive after yakuman: 100% -> 86% |
| 2024-01-06 | 148 | 155.32 -> 157.11 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 867 |
|
🥉 | 3/16 | 100% | 1.00 | CRR | Spring Tournament Irkutsk 2023 | Irkutsk |
| 2 | 273 |
|
9/12 | 71% | 1.10 | CRR | Survive after yakuman | Irkutsk | |
| 3 | 0 |
|
16/16 | 0% | 1.20 | CRR | Winter tournament | Irkutsk | |
| 4 | 727 |
|
4/12 | 0% | 1.10 | CRR | Summer tournament | Irkutsk | |
| 5 | 133 |
|
14/16 | 0% | 1.20 | CRR | Winter tournament | Irkutsk | |
| 6 | 158 |
|
17/20 | 0% | 1.30 | CRR | Irkutsk Winter Tournament 2019 | Irkutsk |