Sychev Ivan
From Saint Petersburg, Russia
EMA: 15990298
Common russian riichi rating (CRR)
Rating date Sept. 15, 2024 (latest changes Sept. 15, 2024).
109 place (371.75).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (739.13 * 1.40 * 0.57 + 897.20 * 4 * 0.86 + 0 + 0 + 0) / (1.40 * 0.57 + 4 * 0.86 + 1 + 1 + 1) = 507.33776402946165
p2 = (897.20 * 4 * 0.86 + 739.13 * 1.40 * 0.57) / max_coefficients = 236.16212874475156
score = 507.33776402946165 * 0.5 + 236.16212874475156 * 0.5 = 371.7499463871066
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-09-15 | 106 -> 109 | 371.75 | |
| 2024-09-06 | 107 -> 106 | 371.75 | |
| 2024-09-03 | 96 -> 107 | 397.77 -> 371.75 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 84 -> 96 | 404.56 -> 397.77 | |
| 2024-08-26 | 87 -> 84 | 404.56 | |
| 2024-08-25 | 88 -> 87 | 404.56 | |
| 2024-08-22 | 87 -> 88 | 411.93 -> 404.56 |
Fire cup 2023: 71% -> 57% |
| 2024-08-11 | 89 -> 87 | 410.43 -> 411.93 | |
| 2024-08-04 | 79 -> 89 | 416.08 -> 410.43 | |
| 2024-07-14 | 75 -> 79 | 416.08 |