Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Oct. 16, 2026 (latest changes Oct. 16, 2026).
329 place (115.15).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (171.43 * 2.50 * 1 + 322.58 * 2.40 * 1 + 0 + 0 + 0) / (2.50 * 1 + 2.40 * 1 + 1 + 1 + 1) = 152.24810126582278
p2 = (322.58 * 2.40 * 1 + 171.43 * 2.50 * 1) / max_coefficients = 78.05061648280338
score = 152.24810126582278 * 0.5 + 78.05061648280338 * 0.5 = 115.14935887431308
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-10-16 | 330 -> 329 | 115.15 | |
| 2026-10-13 | 334 -> 330 | 115.15 | |
| 2026-10-10 | 333 -> 334 | 115.15 | |
| 2026-10-02 | 334 -> 333 | 115.15 | |
| 2026-09-26 | 333 -> 334 | 115.15 | |
| 2026-09-15 | 334 -> 333 | 115.15 | |
| 2026-09-06 | 327 -> 334 | 115.15 | |
| 2026-09-01 | 332 -> 327 | 115.15 | |
| 2026-08-31 | 332 | 115.02 -> 115.15 | |
| 2026-08-30 | 330 -> 332 | 115.02 |