Obukhova Aleksandra
From Samara, Russia
Internal rating (RR)
Rating date Oct. 14, 2026 (latest changes Oct. 13, 2026).
15 place (712.23).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (685.71 * 3.50 * 0.57 + 618.18 * 3 * 1 + 888.11 * 4.71 * 1 + 932.20 * 3.40 * 1 + 436.62 * 3.40 * 1) / (3.50 * 0.57 + 3 * 1 + 4.71 * 1 + 3.40 * 1 + 3.40 * 1) = 730.6476720028588
p2 = (888.11 * 4.71 * 1 + 932.20 * 3.40 * 1 + 618.18 * 3 * 1 + 436.62 * 3.40 * 1) / max_coefficients = 693.8066190785204
score = 730.6476720028588 * 0.5 + 693.8066190785204 * 0.5 = 712.2271455406897
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-10-13 | 17 -> 15 | 707.63 -> 712.23 |
Moscow Riichi 2024: 14% -> 0% |
| 2026-10-03 | 16 -> 17 | 707.63 | |
| 2026-10-02 | 18 -> 16 | 707.63 | |
| 2026-09-26 | 19 -> 18 | 707.63 | |
| 2026-09-07 | 18 -> 19 | 707.63 | |
| 2026-09-06 | 13 -> 18 | 739.44 -> 707.63 |
Sunset Wolf Cup 2026: 0% -> 100% |
| 2026-09-03 | 10 -> 13 | 748.69 -> 739.44 |
Riichi over The Volga 2025: 71% -> 57% |
| 2026-09-01 | 9 -> 10 | 748.69 | |
| 2026-08-31 | 12 -> 9 | 747.54 -> 748.69 | |
| 2026-08-16 | 45 -> 12 | 598.28 -> 747.54 |
Ufa Championship 2026: 0% -> 100% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 437 |
|
41/72 | 100% | 3.40 | RR | Sunset Wolf Cup 2026 | Saint Petersburg | |
| 2 | 932 |
|
5/60 | 100% | 3.40 | RR | Ufa Championship 2026 | Ufa | |
| 3 | 888 |
|
17/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 4 | 618 |
|
22/56 | 100% | 3.00 | RR | Riichi On Ice 2026 | Samara | |
| 5 | 686 |
|
23/71 | 57% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 6 | 438 |
|
51/90 | 0% | 3.75 | RR | Moscow Riichi 2024 | Moscow |