Petrushin Ivan
From Irkutsk, Russia
Common russian riichi rating (CRR)
Rating date July 1, 2024 (latest changes July 1, 2024).
170 place (117.60).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 0.86 + 3.05 * 1) = 14.864125000000001
p1 = (272.73 * 1.10 * 0.57 + 866.67 * 1 * 0.71 + 0 + 0 + 0) / (1.10 * 0.57 + 1 * 0.71 + 1 + 1 + 1) = 182.019139549235
p2 = (866.67 * 1 * 0.71 + 272.73 * 1.10 * 0.57) / max_coefficients = 53.18039238771201
score = 182.019139549235 * 0.5 + 53.18039238771201 * 0.5 = 117.5997659684735
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-07-01 | 169 -> 170 | 132.66 -> 117.60 |
Spring Tournament Irkutsk 2023: 86% -> 71% |
| 2024-06-25 | 170 -> 169 | 132.66 | |
| 2024-06-20 | 171 -> 170 | 132.66 | |
| 2024-06-11 | 181 -> 171 | 131.59 -> 132.66 | |
| 2024-06-09 | 174 -> 181 | 131.59 | |
| 2024-05-25 | 170 -> 174 | 131.59 | |
| 2024-05-19 | 168 -> 170 | 131.59 | |
| 2024-05-14 | 168 | 134.15 -> 131.59 |
Survive after yakuman: 71% -> 57% |
| 2024-05-12 | 157 -> 168 | 138.01 -> 134.15 | |
| 2024-05-05 | 156 -> 157 | 138.01 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 867 |
|
3/16 | 71% | 1.00 | CRR | Spring Tournament Irkutsk 2023 |
| 2 | 273 |
|
9/12 | 57% | 1.10 | CRR | Survive after yakuman |
| 3 | 0 |
|
16/16 | 0% | 1.20 | CRR | Winter tournament |
| 4 | 727 |
|
4/12 | 0% | 1.10 | CRR | Summer tournament |
| 5 | 133 |
|
14/16 | 0% | 1.20 | CRR | Winter tournament |
| 6 | 158 |
|
17/20 | 0% | 1.30 | CRR | Irkutsk Winter Tournament 2019 |