Petrushin Ivan
From Irkutsk, Russia
Common russian riichi rating (CRR)
Rating date Jan. 3, 2023 (latest changes Jan. 3, 2023).
131 place (48.36).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 3.45 * 0.86) = 14.706995
p1 = (727.27 * 1.10 * 0.43 + 0 * 1.20 * 1 + 0 + 0 + 0) / (1.10 * 0.43 + 1.20 * 1 + 1 + 1 + 1) = 73.39889456401211
p2 = (727.27 * 1.10 * 0.43 + 0 * 1.20 * 1) / max_coefficients = 23.31407605700553
score = 73.39889456401211 * 0.5 + 23.31407605700553 * 0.5 = 48.356485310508816
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-01-03 | 132 -> 131 | 76.32 -> 48.36 |
Summer tournament: 57% -> 43% Winter tournament: 14% -> 0% |
2022-12-19 | 132 | 76.16 -> 76.32 | |
2022-12-18 | 130 -> 132 | 76.16 | |
2022-11-28 | 130 | 75.79 -> 76.16 | |
2022-11-06 | 109 -> 130 | 76.78 -> 75.79 | |
2022-11-03 | 107 -> 109 | 92.87 -> 76.78 |
Summer tournament: 71% -> 57% Winter tournament: 29% -> 14% |
2022-09-03 | 106 -> 107 | 107.35 -> 92.87 |
Summer tournament: 86% -> 71% Winter tournament: 43% -> 29% |
2022-08-27 | 95 -> 106 | 107.35 | |
2022-08-20 | 92 -> 95 | 107.35 | |
2022-07-09 | 90 -> 92 | 107.35 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 0 |
|
16/16 | 100% | 1.20 | CRR | Winter tournament |
2 | 727 |
|
4/12 | 43% | 1.10 | CRR | Summer tournament |
3 | 133 |
|
14/16 | 0% | 1.20 | CRR | Winter tournament |
4 | 158 |
|
17/20 | 0% | 1.30 | CRR | Irkutsk Winter Tournament 2019 |