Sychev Ivan
From Saint Petersburg, Russia
EMA: 15990298
Common russian riichi rating (CRR)
Rating date Dec. 26, 2024 (latest changes Dec. 26, 2024).
123 place (318.66).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (739.13 * 1.40 * 0.29 + 897.20 * 4 * 0.71 + 0 + 0 + 0) / (1.40 * 0.29 + 4 * 0.71 + 1 + 1 + 1) = 456.9326757421074
p2 = (897.20 * 4 * 0.71 + 739.13 * 1.40 * 0.29) / max_coefficients = 180.38548895899052
score = 456.9326757421074 * 0.5 + 180.38548895899052 * 0.5 = 318.65908235054894
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-12-25 | 125 -> 123 | 318.66 | |
| 2024-12-22 | 123 -> 125 | 327.70 -> 318.66 |
Fire cup 2023: 43% -> 29% |
| 2024-12-01 | 122 -> 123 | 327.70 | |
| 2024-11-05 | 125 -> 122 | 327.70 | |
| 2024-11-03 | 118 -> 125 | 361.40 -> 327.70 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-25 | 119 -> 118 | 361.40 | |
| 2024-10-22 | 117 -> 119 | 369.35 -> 361.40 |
Fire cup 2023: 57% -> 43% |
| 2024-10-13 | 108 -> 117 | 371.75 -> 369.35 | |
| 2024-10-11 | 109 -> 108 | 371.75 | |
| 2024-09-15 | 106 -> 109 | 371.75 |