Obukhova Aleksandra

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date May 17, 2026 (latest changes May 17, 2026).

91 place (458.59).

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 + 600 * 1.50 * 1 + 618.18 * 3 * 1 + 0) / (3.75 * 0.43 + 3.50 * 0.86 + 1.50 * 1 + 3 * 1 + 1) = 545.7440808936293

p2 = (685.71 * 3.50 * 0.86 + 618.18 * 3 * 1 + 600 * 1.50 * 1 + 438.20 * 3.75 * 0.43) / max_coefficients = 371.4404040404041

score = 545.7440808936293 * 0.5 + 371.4404040404041 * 0.5 = 458.5922424670167

Rating changes

Show

all results
Date Place Points Reason
2026-05-14 92 -> 91 458.59
2026-05-12 93 -> 92 458.59
2026-05-07 94 -> 93 458.59
2026-05-03 87 -> 94 472.12 -> 458.59

Riichi over The Volga 2025: 100% -> 86%
2026-04-27 88 -> 87 472.12
2026-04-26 89 -> 88 472.12
2026-04-19 84 -> 89 472.12
2026-04-16 83 -> 84 472.12
2026-04-13 84 -> 83 477.23 -> 472.12

Moscow Riichi 2024: 57% -> 43%
2026-04-04 86 -> 84 477.23

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
2 600 2025-11-22 9/21 100% 1.50 CRR San-Biki Cup Saratov
3 686 2025-05-03 23/71 86% 3.50 RR Riichi over The Volga 2025 Samara
4 438 2024-10-13 51/90 43% 3.75 RR Moscow Riichi 2024 Moscow