Obukhova Aleksandra

From Samara, Russia

Player page

Internal rating (RR)

Rating date May 5, 2026 (latest changes May 3, 2026).

98 place (395.65).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85

p1 = (438.20 * 3.75 * 0.43 + 685.71 * 3.50 * 0.86 + 618.18 * 3 * 1 + 0 + 0) / (3.75 * 0.43 + 3.50 * 0.86 + 3 * 1 + 1 + 1) = 480.46652996221553

p2 = (685.71 * 3.50 * 0.86 + 618.18 * 3 * 1 + 438.20 * 3.75 * 0.43) / max_coefficients = 310.83434343434345

score = 480.46652996221553 * 0.5 + 310.83434343434345 * 0.5 = 395.65043669827946

Rating changes

Show

all results
Date Place Points Reason
2026-05-03 92 -> 98 411.16 -> 395.65

Riichi over The Volga 2025: 100% -> 86%
2026-05-02 93 -> 92 411.16
2026-04-27 94 -> 93 411.16
2026-04-19 93 -> 94 411.16
2026-04-16 92 -> 93 411.16
2026-04-13 90 -> 92 417.69 -> 411.16

Moscow Riichi 2024: 57% -> 43%
2026-04-05 91 -> 90 417.69
2026-04-04 93 -> 91 417.69
2026-03-14 94 -> 93 417.69
2026-03-12 96 -> 94 417.69

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 618 2026-01-25 22/56 100% 3.00 RR Riichi On Ice 2026 Samara
2 686 2025-05-03 23/71 86% 3.50 RR Riichi over The Volga 2025 Samara
3 438 2024-10-13 51/90 43% 3.75 RR Moscow Riichi 2024 Moscow