Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Sept. 1, 2025 (latest changes Sept. 1, 2025).
272 place (105.03).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (296.30 * 2.30 * 0.29 + 555.56 * 2.30 * 0.43 + 0 + 0 + 0) / (2.30 * 0.29 + 2.30 * 0.43 + 1 + 1 + 1) = 159.89179153501374
p2 = (555.56 * 2.30 * 0.43 + 296.30 * 2.30 * 0.29) / max_coefficients = 50.15945945945945
score = 159.89179153501374 * 0.5 + 50.15945945945945 * 0.5 = 105.02562549723659
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-01 | 272 | 104.37 -> 105.03 | |
| 2025-08-31 | 265 -> 272 | 104.37 | |
| 2025-08-26 | 248 -> 265 | 146.30 -> 104.37 | |
| 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% |