Bykov Dmitriy
From Saint Petersburg, Russia
EMA: 15990236
Common russian riichi rating (CRR)
Rating date Sept. 14, 2024 (latest changes Sept. 14, 2024).
159 place (180.40).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (299.07 * 4 * 0.86 + 578.95 * 1.50 * 1 + 0 + 0 + 0) / (4 * 0.86 + 1.50 * 1 + 1 + 1 + 1) = 238.8552545280258
p2 = (299.07 * 4 * 0.86 + 578.95 * 1.50 * 1) / max_coefficients = 121.95332423173024
score = 238.8552545280258 * 0.5 + 121.95332423173024 * 0.5 = 180.404289379878
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-09-06 | 160 -> 159 | 180.40 | |
| 2024-09-03 | 161 -> 160 | 185.57 -> 180.40 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 153 -> 161 | 188.92 -> 185.57 | |
| 2024-08-26 | 154 -> 153 | 188.92 | |
| 2024-08-25 | 156 -> 154 | 188.92 | |
| 2024-08-20 | 157 -> 156 | 188.92 | |
| 2024-08-11 | 156 -> 157 | 188.21 -> 188.92 | |
| 2024-08-04 | 153 -> 156 | 190.90 -> 188.21 | |
| 2024-07-14 | 148 -> 153 | 190.90 | |
| 2024-07-09 | 149 -> 148 | 190.90 |