Davletshin Vitalii
From Ufa, Russia
Common russian riichi rating (CRR)
Rating date Sept. 16, 2026 (latest changes Sept. 15, 2026).
181 place (322.36).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (473.68 * 1.90 * 0.57 + 800 * 1.40 * 1 + 508.47 * 3.40 * 1 + 0 + 0) / (1.90 * 0.57 + 1.40 * 1 + 3.40 * 1 + 1 + 1) = 426.47920402350593
p2 = (508.47 * 3.40 * 1 + 800 * 1.40 * 1 + 473.68 * 1.90 * 0.57) / max_coefficients = 218.23945489941593
score = 426.47920402350593 * 0.5 + 218.23945489941593 * 0.5 = 322.3593294614609
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-06 | 174 -> 181 | 322.36 | |
| 2026-09-03 | 177 -> 174 | 322.36 | |
| 2026-08-31 | 177 | 322.01 -> 322.36 | |
| 2026-08-30 | 175 -> 177 | 322.01 | |
| 2026-08-29 | 176 -> 175 | 322.01 | |
| 2026-08-27 | 177 -> 176 | 322.01 | |
| 2026-08-26 | 178 -> 177 | 322.01 | |
| 2026-08-16 | 274 -> 178 | 201.81 -> 322.01 |
Ufa Championship 2026: 0% -> 100% |
| 2026-08-15 | 274 | 201.42 -> 201.81 | |
| 2026-08-13 | 276 -> 274 | 201.42 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 508 |
|
30/60 | 100% | 3.40 | RR | Ufa Championship 2026 | Ufa | |
| 2 | 800 |
|
4/16 | 100% | 1.40 | CRR | July Martenho Training Tournament 2026 | Ufa | |
| 3 | 474 |
|
11/20 | 57% | 1.90 | CRR | Martenho's Spring tournament | Ufa |