Obukhova Aleksandra

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Aug. 31, 2026 (latest changes Aug. 31, 2026).

13 place (739.64).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (438.20 * 3.75 * 0.14 + 685.71 * 3.50 * 0.71 + 600 * 1.50 * 1 + 618.18 * 3 * 1 + 888.11 * 4.71 * 1 + 932.20 * 3.40 * 1) / (3.75 * 0.14 + 3.50 * 0.71 + 1.50 * 1 + 3 * 1 + 4.71 * 1 + 3.40 * 1) = 770.5642203960457

p2 = (888.11 * 4.71 * 1 + 932.20 * 3.40 * 1 + 618.18 * 3 * 1 + 685.71 * 3.50 * 0.71) / max_coefficients = 708.7196625567813

score = 770.5642203960457 * 0.5 + 708.7196625567813 * 0.5 = 739.6419414764134

Rating changes

Show

all results
Date Place Points Reason
2026-08-31 13 738.50 -> 739.64
2026-08-16 34 -> 13 642.66 -> 738.50

Ufa Championship 2026: 0% -> 100%
2026-08-15 34 640.61 -> 642.66
2026-08-13 36 -> 34 634.59 -> 640.61

Moscow Riichi 2024: 29% -> 14%
2026-08-04 37 -> 36 634.59
2026-08-03 39 -> 37 634.59
2026-08-02 37 -> 39 634.59
2026-07-25 36 -> 37 634.59
2026-07-14 37 -> 36 634.59
2026-07-12 36 -> 37 634.59

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 932 2026-08-16 5/60 100% 3.40 RR Ufa Championship 2026 Ufa
2 888 2026-06-14 17/144 100% 4.71 RR XII Russian Championship Samara
3 618 2026-01-25 22/56 100% 3.00 RR Riichi On Ice 2026 Samara
4 600 2025-11-22 9/21 100% 1.50 CRR San-Biki Cup Saratov
5 686 2025-05-03 23/71 71% 3.50 RR Riichi over The Volga 2025 Samara
6 438 2024-10-13 51/90 14% 3.75 RR Moscow Riichi 2024 Moscow