Obukhova Aleksandra

From Samara, Russia

Player page

Internal rating (RR)

Rating date March 2, 2026 (latest changes March 2, 2026).

99 place (417.69).

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

p1 = (438.20 * 3.75 * 0.57 + 685.71 * 3.50 * 1 + 618.18 * 3 * 1 + 0 + 0) / (3.75 * 0.57 + 3.50 * 1 + 3 * 1 + 1 + 1) = 487.98571797702664

p2 = (685.71 * 3.50 * 1 + 618.18 * 3 * 1 + 438.20 * 3.75 * 0.57) / max_coefficients = 347.3919732441472

score = 487.98571797702664 * 0.5 + 347.3919732441472 * 0.5 = 417.6888456105869

Rating changes

Show

all results
Date Place Points Reason
2026-03-02 100 -> 99 417.69
2026-03-01 99 -> 100 417.69
2026-02-23 92 -> 99 417.69
2026-02-16 94 -> 92 417.69
2026-02-13 93 -> 94 424.35 -> 417.69

Moscow Riichi 2024: 71% -> 57%
2026-02-08 92 -> 93 424.35
2026-02-04 94 -> 92 424.35
2026-01-30 95 -> 94 424.35
2026-01-25 135 -> 95 314.20 -> 424.35

Riichi On Ice 2026: 0% -> 100%
2026-01-14 136 -> 135 314.20

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 23/71 100% 3.50 RR Riichi over The Volga 2025 Samara
3 438 2024-10-13 51/90 57% 3.75 RR Moscow Riichi 2024 Moscow