Obukhova Aleksandra

From Samara, Russia

Player page

Internal rating (RR)

Rating date Oct. 9, 2025 (latest changes Oct. 9, 2025).

121 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
2025-10-09 122 -> 121 333.83
2025-10-04 124 -> 122 333.83
2025-09-12 126 -> 124 333.83
2025-09-03 130 -> 126 333.83
2025-09-01 131 -> 130 330.23 -> 333.83
2025-08-09 132 -> 131 330.23
2025-08-04 132 328.93 -> 330.23
2025-08-03 129 -> 132 328.93
2025-07-13 125 -> 129 328.93
2025-07-12 124 -> 125 326.47 -> 328.93

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