Bykova Yulia
From Arkhangelsk, Russia
EMA: 15990258
Common russian riichi rating (CRR)
Rating date Sept. 3, 2023 (latest changes Sept. 3, 2023).
172 place (111.60).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (81.08 * 4.05 * 0.71 + 509.09 * 3.30 * 0.29 + 333.33 * 3.45 * 0.29 + 0 + 0) / (4.05 * 0.71 + 3.30 * 0.29 + 3.45 * 0.29 + 1 + 1) = 152.91604790226037
p2 = (509.09 * 3.30 * 0.29 + 333.33 * 3.45 * 0.29 + 81.08 * 4.05 * 0.71) / max_coefficients = 70.27595320730462
score = 152.91604790226037 * 0.5 + 70.27595320730462 * 0.5 = 111.5960005547825
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-09-03 | 156 -> 172 | 114.69 -> 111.60 | |
| 2023-08-27 | 151 -> 156 | 114.69 | |
| 2023-08-26 | 149 -> 151 | 114.69 | |
| 2023-08-12 | 149 | 111.97 -> 114.69 |
Moscow Riichi 2022: 86% -> 71% |
| 2023-07-28 | 148 -> 149 | 123.56 -> 111.97 |
Saint Petersburg Open 2021: 43% -> 29% |
| 2023-07-20 | 149 -> 148 | 123.56 | |
| 2023-07-15 | 21 -> 149 | 630.94 -> 123.56 | |
| 2021-02-01 | 25 -> 21 | 664.42 -> 630.94 | |
| 2020-02-01 | 25 | 664.42 |