Obukhova Aleksandra

From Samara, Russia

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Internal rating (RR)

Rating date May 20, 2025 (latest changes May 12, 2025).

122 place (330.30).

max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266

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 = 266.13246133330176

score = 394.46439024390247 * 0.5 + 266.13246133330176 * 0.5 = 330.2984257886021

Rating changes

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all results
Date Place Points Reason
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