Datkov Sergey
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Nov. 6, 2026 (latest changes Nov. 4, 2026).
338 place (116.46).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.40 * 1 + 3.40 * 1 + 3.40 * 1) = 14.91
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 = 80.66800804828974
score = 152.24810126582278 * 0.5 + 80.66800804828974 * 0.5 = 116.45805465705627
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-11-04 | 340 -> 338 | 115.15 -> 116.46 | |
| 2026-11-01 | 336 -> 340 | 115.15 | |
| 2026-10-31 | 333 -> 336 | 115.15 | |
| 2026-10-24 | 329 -> 333 | 115.15 | |
| 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 |