Obukhova Aleksandra

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date July 12, 2025 (latest changes July 12, 2025).

143 place (328.93).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35

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 = 263.4045602605863

score = 394.46439024390247 * 0.5 + 263.4045602605863 * 0.5 = 328.9344752522444

Rating changes

Show

all results
Date Place Points Reason
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
2025-06-14 142 -> 143 330.30
2025-06-11 144 -> 142 330.30
2025-06-09 145 -> 144 330.30
2025-06-08 144 -> 145 330.30
2025-05-25 145 -> 144 330.30
2025-05-17 143 -> 145 330.30
2025-05-12 144 -> 143 324.78 -> 330.30

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