Petrushin Ivan
From Irkutsk, Russia
Common russian riichi rating (CRR)
Rating date June 12, 2022 (latest changes June 12, 2022).
82 place (120.57).
how we calculated rating score
max_coefficients = (4.05 * 1 + 3.50 * 1 + 3.45 * 1 + 3.30 * 1) = 14.3
p1 = (133.33 * 1.20 * 0.57 + 727.27 * 1.10 * 1 + 0 * 1.20 * 1 + 0 + 0) / (1.20 * 0.57 + 1.10 * 1 + 1.20 * 1 + 1 + 1) = 178.79607195006497
p2 = (727.27 * 1.10 * 1 + 133.33 * 1.20 * 0.57 + 0 * 1.20 * 1) / max_coefficients = 62.33706293706293
score = 178.79607195006497 * 0.5 + 62.33706293706293 * 0.5 = 120.56656744356395
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2022-06-12 | 64 -> 82 | 122.78 -> 120.57 | |
2022-05-15 | 178 -> 64 | 46.10 -> 122.78 | |
2021-02-01 | 178 | 46.10 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 0 |
|
16/16 | 100% | 1.20 | CRR | Winter tournament |
2 | 727 |
|
4/12 | 100% | 1.10 | CRR | Summer tournament |
3 | 133 |
|
14/16 | 57% | 1.20 | CRR | Winter tournament |
4 | 158 |
|
17/20 | 0% | 1.30 | CRR | Irkutsk Winter Tournament 2019 |