Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Aug. 8, 2025 (latest changes Aug. 4, 2025).
245 place (164.73).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (578.95 * 2.10 * 0.14 + 296.30 * 2.30 * 0.29 + 555.56 * 2.30 * 0.57 + 0 + 0) / (2.10 * 0.14 + 2.30 * 0.29 + 2.30 * 0.57 + 1 + 1) = 257.1884759634969
p2 = (555.56 * 2.30 * 0.57 + 296.30 * 2.30 * 0.29 + 578.95 * 2.10 * 0.14) / max_coefficients = 72.27368421052631
score = 257.1884759634969 * 0.5 + 72.27368421052631 * 0.5 = 164.7310800870116
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-04 | 245 | 164.38 -> 164.73 | |
| 2025-08-03 | 239 -> 245 | 164.38 | |
| 2025-07-26 | 237 -> 239 | 164.38 | |
| 2025-07-13 | 234 -> 237 | 164.38 | |
| 2025-07-12 | 233 -> 234 | 163.71 -> 164.38 | |
| 2025-07-05 | 231 -> 233 | 168.22 -> 163.71 |
Finding Dora: 43% -> 29% |
| 2025-07-03 | 232 -> 231 | 168.22 | |
| 2025-06-27 | 226 -> 232 | 183.53 -> 168.22 |
13 tiles until tempai: 29% -> 14% |
| 2025-06-25 | 217 -> 226 | 198.04 -> 183.53 |
Chasing Kan: 71% -> 57% |
| 2025-06-22 | 218 -> 217 | 198.04 |