Obukhova Aleksandra

From Samara, Russia

Player page

Internal rating (RR)

Rating date Aug. 5, 2025 (latest changes Aug. 4, 2025).

132 place (330.23).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2

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 = 266.00394736842105

score = 394.46439024390247 * 0.5 + 266.00394736842105 * 0.5 = 330.23416880616173

Rating changes

Show

Date Place Points Reason
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
2025-06-15 119 -> 124 330.30 -> 326.47
2025-06-11 122 -> 119 330.30
2025-05-12 125 -> 122 324.78 -> 330.30
2025-05-10 127 -> 125 324.78
2025-05-03 127 324.78

Riichi over The Volga 2025: 0% -> 100%

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