Petrushin Ivan
From Irkutsk, Russia
Common russian riichi rating (CRR)
Rating date Nov. 3, 2024 (latest changes Nov. 3, 2024).
210 place (75.49).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (866.67 * 1 * 0.43 + 272.73 * 1.10 * 0.29 + 0 + 0 + 0) / (1 * 0.43 + 1.10 * 0.29 + 1 + 1 + 1) = 122.14156516256242
p2 = (866.67 * 1 * 0.43 + 272.73 * 1.10 * 0.29) / max_coefficients = 28.84290220820189
score = 122.14156516256242 * 0.5 + 28.84290220820189 * 0.5 = 75.49223368538216
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-11-01 | 203 -> 210 | 93.08 -> 75.49 |
Spring Tournament Irkutsk 2023: 57% -> 43% |
| 2024-10-27 | 202 -> 203 | 93.08 | |
| 2024-10-25 | 204 -> 202 | 93.08 | |
| 2024-10-13 | 190 -> 204 | 93.46 -> 93.08 | |
| 2024-10-11 | 191 -> 190 | 93.46 | |
| 2024-09-15 | 187 -> 191 | 93.46 | |
| 2024-09-14 | 187 | 97.23 -> 93.46 |
Survive after yakuman: 43% -> 29% |
| 2024-09-03 | 187 | 96.52 -> 97.23 | |
| 2024-09-01 | 171 -> 187 | 113.74 -> 96.52 |
Spring Tournament Irkutsk 2023: 71% -> 57% |
| 2024-08-26 | 177 -> 171 | 113.74 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 867 |
|
3/16 | 43% | 1.00 | CRR | Spring Tournament Irkutsk 2023 |
| 2 | 273 |
|
9/12 | 29% | 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 |