Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Feb. 25, 2025 (latest changes Feb. 25, 2025).
178 place (238.87).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (578.95 * 2.10 * 0.57 + 296.30 * 2.30 * 0.71 + 555.56 * 2.30 * 0.86 + 0 + 0) / (2.10 * 0.57 + 2.30 * 0.71 + 2.30 * 0.86 + 1 + 1) = 334.1072120408091
p2 = (555.56 * 2.30 * 0.86 + 578.95 * 2.10 * 0.57 + 296.30 * 2.30 * 0.71) / max_coefficients = 143.6378548895899
score = 334.1072120408091 * 0.5 + 143.6378548895899 * 0.5 = 238.8725334651995
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-25 | 174 -> 178 | 249.73 -> 238.87 |
Chasing Kan: 100% -> 86% |
| 2025-02-16 | 165 -> 174 | 249.73 | |
| 2025-02-11 | 166 -> 165 | 249.73 | |
| 2025-02-02 | 159 -> 166 | 249.73 | |
| 2025-01-26 | 152 -> 159 | 249.73 | |
| 2025-01-07 | 149 -> 152 | 249.73 | |
| 2025-01-05 | 149 | 251.74 -> 249.73 |
Finding Dora: 86% -> 71% |
| 2025-01-04 | 146 -> 149 | 251.74 | |
| 2025-01-03 | 145 -> 146 | 251.74 | |
| 2024-12-29 | 144 -> 145 | 251.74 |