Bikbulatov Ruslan
From Chelyabinsk, Russia
Internal rating (RR)
Rating date May 16, 2026 (latest changes May 14, 2026).
175 place (232.54).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (568.42 * 3.85 * 0.29 + 493.51 * 3.45 * 1 + 0 + 0 + 0) / (3.85 * 0.29 + 3.45 * 1 + 1 + 1 + 1) = 308.32410037424114
p2 = (493.51 * 3.45 * 1 + 568.42 * 3.85 * 0.29) / max_coefficients = 156.75622895622897
score = 308.32410037424114 * 0.5 + 156.75622895622897 * 0.5 = 232.54016466523507
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-12 | 184 -> 175 | 232.54 | |
| 2026-05-03 | 179 -> 184 | 232.02 -> 232.54 | |
| 2026-05-01 | 173 -> 179 | 251.31 -> 232.02 |
SPB Riichi Open 2024: 43% -> 29% |
| 2026-04-19 | 169 -> 173 | 251.31 | |
| 2026-04-16 | 170 -> 169 | 251.31 | |
| 2026-04-11 | 164 -> 170 | 251.31 | |
| 2026-04-09 | 165 -> 164 | 251.31 | |
| 2026-04-05 | 162 -> 165 | 251.31 | |
| 2026-04-04 | 164 -> 162 | 251.31 | |
| 2026-04-02 | 165 -> 164 | 251.31 |