Bikbulatov Ruslan
From Chelyabinsk, Russia
Common russian riichi rating (CRR)
Rating date Sept. 4, 2025 (latest changes Sept. 3, 2025).
139 place (347.05).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8
p1 = (629.63 * 2.30 * 0.29 + 568.42 * 3.85 * 0.86 + 493.51 * 3.45 * 1 + 0 + 0) / (2.30 * 0.29 + 3.85 * 0.86 + 3.45 * 1 + 1 + 1) = 424.37156802766464
p2 = (568.42 * 3.85 * 0.86 + 493.51 * 3.45 * 1 + 629.63 * 2.30 * 0.29) / max_coefficients = 269.7324324324324
score = 424.37156802766464 * 0.5 + 269.7324324324324 * 0.5 = 347.0520002300485
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-09-03 | 140 -> 139 | 347.05 | |
| 2025-09-01 | 137 -> 140 | 357.77 -> 347.05 |
SPB Riichi Open 2024: 100% -> 86% |
| 2025-08-31 | 189 -> 137 | 258.91 -> 357.77 |
SPB Riichi Open 2025: 0% -> 100% |
| 2025-08-26 | 169 -> 189 | 290.17 -> 258.91 | |
| 2025-08-25 | 172 -> 169 | 290.17 | |
| 2025-08-04 | 174 -> 172 | 289.29 -> 290.17 | |
| 2025-08-03 | 168 -> 174 | 289.29 | |
| 2025-07-26 | 167 -> 168 | 289.29 | |
| 2025-07-14 | 168 -> 167 | 289.29 | |
| 2025-07-13 | 164 -> 168 | 289.29 |