Bogatova Anna

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 27, 2026 (latest changes Sept. 26, 2026).

174 place (333.90).

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

p1 = (785.71 * 2.60 * 0.29 + 328.57 * 3.50 * 0.57 + 400 * 1.50 * 1 + 581.82 * 3 * 1 + 0) / (2.60 * 0.29 + 3.50 * 0.57 + 1.50 * 1 + 3 * 1 + 1) = 435.0748296678766

p2 = (581.82 * 3 * 1 + 328.57 * 3.50 * 0.57 + 400 * 1.50 * 1 + 785.71 * 2.60 * 0.29) / max_coefficients = 232.71901362751458

score = 435.0748296678766 * 0.5 + 232.71901362751458 * 0.5 = 333.8969216476956

Rating changes

Show

all results
Date Place Points Reason
2026-09-26 163 -> 174 350.93 -> 333.90

Riichi On Ice: 43% -> 29%
2026-09-23 164 -> 163 350.93
2026-09-15 165 -> 164 350.93
2026-09-13 166 -> 165 350.93
2026-09-06 162 -> 166 350.93
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

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 29% 2.60 RR Riichi On Ice Samara
5 152 2024-08-04 68/80 0% 3.65 RR Riichi over Volga Samara