Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Aug. 25, 2025 (latest changes Aug. 25, 2025).
248 place (146.30).
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 * 0.43 + 0 + 0) / (2.10 * 0.14 + 2.30 * 0.29 + 2.30 * 0.43 + 1 + 1) = 232.33696341345885
p2 = (555.56 * 2.30 * 0.43 + 296.30 * 2.30 * 0.29 + 578.95 * 2.10 * 0.14) / max_coefficients = 60.26973684210526
score = 232.33696341345885 * 0.5 + 60.26973684210526 * 0.5 = 146.30335012778204
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-25 | 245 -> 248 | 164.73 -> 146.30 |
Chasing Kan: 57% -> 43% |
| 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% |