Bogatova Anna

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Aug. 16, 2026 (latest changes Aug. 16, 2026).

154 place (352.50).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 15.459999999999999

p1 = (785.71 * 2.60 * 0.43 + 328.57 * 3.50 * 0.71 + 400 * 1.50 * 1 + 581.82 * 3 * 1 + 0) / (2.60 * 0.43 + 3.50 * 0.71 + 1.50 * 1 + 3 * 1 + 1) = 443.52514315243667

p2 = (581.82 * 3 * 1 + 785.71 * 2.60 * 0.43 + 328.57 * 3.50 * 0.71 + 400 * 1.50 * 1) / max_coefficients = 261.4793014230272

score = 443.52514315243667 * 0.5 + 261.4793014230272 * 0.5 = 352.5022222877319

Rating changes

Show

all results
Date Place Points Reason
2026-08-15 154 351.54 -> 352.50
2026-08-13 153 -> 154 351.54
2026-08-04 149 -> 153 368.42 -> 351.54

Riichi over Volga: 14% -> 0%
2026-08-02 148 -> 149 368.42
2026-07-29 149 -> 148 368.42
2026-07-26 140 -> 149 384.14 -> 368.42

Riichi On Ice: 57% -> 43%
2026-07-23 141 -> 140 384.14
2026-07-18 140 -> 141 384.14
2026-07-14 141 -> 140 384.14
2026-07-13 142 -> 141 384.14

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 582 2026-01-25 24/56 100% 3.00 RR Riichi On Ice 2026 Samara
2 400 2025-11-22 13/21 100% 1.50 CRR San-Biki Cup Saratov
3 329 2025-05-03 48/71 71% 3.50 RR Riichi over The Volga 2025 Samara
4 786 2025-01-26 10/43 43% 2.60 RR Riichi On Ice Samara
5 152 2024-08-04 68/80 0% 3.65 RR Riichi over Volga Samara