Bogatova Anna

From Samara, Russia

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Common russian riichi rating (CRR)

Rating date Sept. 6, 2026 (latest changes Sept. 4, 2026).

162 place (350.93).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (785.71 * 2.60 * 0.43 + 328.57 * 3.50 * 0.57 + 400 * 1.50 * 1 + 581.82 * 3 * 1 + 0) / (2.60 * 0.43 + 3.50 * 0.57 + 1.50 * 1 + 3 * 1 + 1) = 450.198856314994

p2 = (581.82 * 3 * 1 + 785.71 * 2.60 * 0.43 + 328.57 * 3.50 * 0.57 + 400 * 1.50 * 1) / max_coefficients = 251.66320571057756

score = 450.198856314994 * 0.5 + 251.66320571057756 * 0.5 = 350.93103101278575

Rating changes

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all results
Date Place Points Reason
2026-09-03 161 -> 162 352.93 -> 350.93

Riichi over The Volga 2025: 71% -> 57%
2026-08-31 161 352.50 -> 352.93
2026-08-30 158 -> 161 352.50
2026-08-16 154 -> 158 352.50
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%

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 57% 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