Obukhova Aleksandra

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 5, 2025 (latest changes Sept. 5, 2025).

143 place (333.83).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (438.20 * 3.75 * 1 + 685.71 * 3.50 * 1 + 0 + 0 + 0) / (3.75 * 1 + 3.50 * 1 + 1 + 1 + 1) = 394.46439024390247

p2 = (685.71 * 3.50 * 1 + 438.20 * 3.75 * 1) / max_coefficients = 273.1932432432432

score = 394.46439024390247 * 0.5 + 273.1932432432432 * 0.5 = 333.8288167435728

Rating changes

Show

all results
Date Place Points Reason
2025-09-03 147 -> 143 333.83
2025-09-01 146 -> 147 330.23 -> 333.83
2025-08-26 147 -> 146 330.23
2025-08-09 148 -> 147 330.23
2025-08-04 148 328.93 -> 330.23
2025-08-03 146 -> 148 328.93
2025-07-13 143 -> 146 328.93
2025-07-12 144 -> 143 326.47 -> 328.93
2025-07-10 146 -> 144 326.47
2025-06-15 143 -> 146 330.30 -> 326.47

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 686 2025-05-03 23/71 100% 3.50 RR Riichi over The Volga 2025 Samara
2 438 2024-10-13 51/90 100% 3.75 RR Moscow Riichi 2024 Moscow