Obukhova Aleksandra

From Samara, Russia

Player page

Internal rating (RR)

Rating date Nov. 16, 2025 (latest changes Nov. 14, 2025).

125 place (323.40).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (438.20 * 3.75 * 0.86 + 685.71 * 3.50 * 1 + 0 + 0 + 0) / (3.75 * 0.86 + 3.50 * 1 + 1 + 1 + 1) = 392.0517802684236

p2 = (685.71 * 3.50 * 1 + 438.20 * 3.75 * 0.86) / max_coefficients = 254.74515050167227

score = 392.0517802684236 * 0.5 + 254.74515050167227 * 0.5 = 323.3984653850479

Rating changes

Show

all results
Date Place Points Reason
2025-11-14 126 -> 125 323.40
2025-11-12 130 -> 126 323.40
2025-11-10 131 -> 130 323.40
2025-11-04 125 -> 131 329.19 -> 323.40
2025-11-01 125 328.73 -> 329.19
2025-10-13 121 -> 125 333.83 -> 328.73

Moscow Riichi 2024: 100% -> 86%
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

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 86% 3.75 RR Moscow Riichi 2024 Moscow