Bykova Yulia
From Arkhangelsk, Russia
EMA: 15990258
Common russian riichi rating (CRR)
Rating date June 11, 2023 (latest changes June 11, 2023).
147 place (138.25).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.75 * 1 + 2.80 * 1) = 14.8
p1 = (509.09 * 3.30 * 0.43 + 333.33 * 3.45 * 0.43 + 81.08 * 4.05 * 1 + 0 + 0) / (3.30 * 0.43 + 3.45 * 0.43 + 4.05 * 1 + 1 + 1) = 172.34835989958685
p2 = (509.09 * 3.30 * 0.43 + 333.33 * 3.45 * 0.43 + 81.08 * 4.05 * 1) / max_coefficients = 104.14324324324325
score = 172.34835989958685 * 0.5 + 104.14324324324325 * 0.5 = 138.24580157141506
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-06-11 | 131 -> 147 | 143.05 -> 138.25 | |
| 2023-05-28 | 129 -> 131 | 153.31 -> 143.05 |
Saint Petersburg Open 2021: 57% -> 43% |
| 2023-05-20 | 130 -> 129 | 151.07 -> 153.31 | |
| 2023-05-06 | 128 -> 130 | 167.42 -> 151.07 |
Kirov Tournament: 57% -> 43% |
| 2023-05-01 | 126 -> 128 | 167.42 | |
| 2023-04-22 | 120 -> 126 | 167.42 | |
| 2023-04-15 | 21 -> 120 | 630.94 -> 167.42 | |
| 2021-02-01 | 25 -> 21 | 664.42 -> 630.94 | |
| 2020-02-01 | 25 | 664.42 |