Bikbulatov Ruslan
From Chelyabinsk, Russia
Internal rating (RR)
Rating date Aug. 31, 2025 (latest changes Aug. 31, 2025).
134 place (316.88).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (568.42 * 3.85 * 1 + 493.51 * 3.45 * 1 + 0 + 0 + 0) / (3.85 * 1 + 3.45 * 1 + 1 + 1 + 1) = 377.7689320388349
p2 = (568.42 * 3.85 * 1 + 493.51 * 3.45 * 1) / max_coefficients = 255.98815789473684
score = 377.7689320388349 * 0.5 + 255.98815789473684 * 0.5 = 316.87854496678585
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-31 | 124 -> 134 | 131.03 -> 316.88 |
SPB Riichi Open 2025: 0% -> 100% |
| 2021-02-01 | 163 -> 124 | 265.28 -> 131.03 | |
| 2020-02-01 | 163 | 265.28 |