Bikbulatov Ruslan
From Chelyabinsk, Russia
Common russian riichi rating (CRR)
Rating date Nov. 5, 2025 (latest changes Nov. 5, 2025).
171 place (286.71).
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 * 0.71 + 493.51 * 3.45 * 1 + 0 + 0 + 0) / (3.85 * 0.71 + 3.45 * 1 + 1 + 1 + 1) = 354.97505177958175
p2 = (493.51 * 3.45 * 1 + 568.42 * 3.85 * 0.71) / max_coefficients = 218.44749163879598
score = 354.97505177958175 * 0.5 + 218.44749163879598 * 0.5 = 286.71127170918885
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-11-04 | 148 -> 171 | 325.01 -> 286.71 | |
| 2025-11-01 | 136 -> 148 | 340.36 -> 325.01 |
SPB Riichi Open 2024: 86% -> 71% |
| 2025-10-25 | 137 -> 136 | 340.36 | |
| 2025-10-13 | 137 | 336.35 -> 340.36 | |
| 2025-10-04 | 139 -> 137 | 336.35 | |
| 2025-09-19 | 140 -> 139 | 336.35 | |
| 2025-09-15 | 141 -> 140 | 336.35 | |
| 2025-09-12 | 142 -> 141 | 336.35 | |
| 2025-09-05 | 139 -> 142 | 347.05 -> 336.35 |
Finding Dora: 29% -> 14% |
| 2025-09-03 | 140 -> 139 | 347.05 |