Bikbulatov Ruslan
From Chelyabinsk, Russia
Internal rating (RR)
Rating date Jan. 10, 2026 (latest changes Jan. 10, 2026).
159 place (269.46).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (568.42 * 3.85 * 0.57 + 493.51 * 3.45 * 1 + 0 + 0 + 0) / (3.85 * 0.57 + 3.45 * 1 + 1 + 1 + 1) = 341.39856113777165
p2 = (493.51 * 3.45 * 1 + 568.42 * 3.85 * 0.57) / max_coefficients = 197.52909698996655
score = 341.39856113777165 * 0.5 + 197.52909698996655 * 0.5 = 269.46382906386907
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-07 | 156 -> 159 | 269.46 | |
| 2026-01-01 | 147 -> 156 | 286.71 -> 269.46 |
SPB Riichi Open 2024: 71% -> 57% |
| 2025-12-13 | 148 -> 147 | 286.71 | |
| 2025-12-09 | 149 -> 148 | 286.71 | |
| 2025-12-07 | 144 -> 149 | 286.71 | |
| 2025-11-30 | 145 -> 144 | 286.71 | |
| 2025-11-14 | 146 -> 145 | 286.71 | |
| 2025-11-12 | 148 -> 146 | 286.71 | |
| 2025-11-10 | 149 -> 148 | 286.71 | |
| 2025-11-04 | 142 -> 149 | 291.68 -> 286.71 |