Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Oct. 27, 2025 (latest changes Oct. 27, 2025).
268 place (74.12).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.50 * 1 + 3.45 * 1 + 3.85 * 0.86) = 14.349835
p1 = (296.30 * 2.30 * 0.14 + 555.56 * 2.30 * 0.29 + 0 + 0 + 0) / (2.30 * 0.14 + 2.30 * 0.29 + 1 + 1 + 1) = 116.02245984474807
p2 = (555.56 * 2.30 * 0.29 + 296.30 * 2.30 * 0.14) / max_coefficients = 32.22615451675925
score = 116.02245984474807 * 0.5 + 32.22615451675925 * 0.5 = 74.12430718075366
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-10-25 | 260 -> 268 | 97.23 -> 74.12 |
Chasing Kan: 43% -> 29% |
| 2025-10-22 | 261 -> 260 | 97.23 | |
| 2025-10-13 | 262 -> 261 | 96.55 -> 97.23 | |
| 2025-10-04 | 263 -> 262 | 96.55 | |
| 2025-09-19 | 264 -> 263 | 96.55 | |
| 2025-09-05 | 262 -> 264 | 105.03 -> 96.55 |
Finding Dora: 29% -> 14% |
| 2025-09-03 | 272 -> 262 | 105.03 | |
| 2025-09-01 | 272 | 104.37 -> 105.03 | |
| 2025-08-31 | 265 -> 272 | 104.37 | |
| 2025-08-26 | 248 -> 265 | 146.30 -> 104.37 |