Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date June 15, 2025 (latest changes June 15, 2025).
218 place (198.04).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (578.95 * 2.10 * 0.29 + 296.30 * 2.30 * 0.43 + 555.56 * 2.30 * 0.71 + 0 + 0) / (2.10 * 0.29 + 2.30 * 0.43 + 2.30 * 0.71 + 1 + 1) = 296.8553964319594
p2 = (555.56 * 2.30 * 0.71 + 578.95 * 2.10 * 0.29 + 296.30 * 2.30 * 0.43) / max_coefficients = 99.22545142578053
score = 296.8553964319594 * 0.5 + 99.22545142578053 * 0.5 = 198.04042392886996
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-06-15 | 210 -> 218 | 199.51 -> 198.04 | |
| 2025-06-14 | 204 -> 210 | 199.51 | |
| 2025-06-11 | 210 -> 204 | 199.51 | |
| 2025-06-09 | 211 -> 210 | 199.51 | |
| 2025-05-17 | 209 -> 211 | 199.51 | |
| 2025-05-12 | 210 -> 209 | 197.39 -> 199.51 | |
| 2025-05-05 | 208 -> 210 | 200.45 -> 197.39 |
Finding Dora: 57% -> 43% |
| 2025-05-03 | 206 -> 208 | 200.45 | |
| 2025-04-27 | 197 -> 206 | 213.15 -> 200.45 |
13 tiles until tempai: 43% -> 29% |
| 2025-04-26 | 196 -> 197 | 213.15 |