Boiko Bogdan

From Kirov, Russia

Player page

Common russian riichi rating (CRR)

Rating date July 14, 2025 (latest changes July 14, 2025).

63 place (549.18).

max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35

p1 = (1000 * 3.10 * 1 + 214.95 * 4.60 * 0.71 + 191.49 * 2.80 * 0.86 + 925.37 * 4.10 * 1 + 113.92 * 3.65 * 1 + 736.84 * 1.50 * 1) / (3.10 * 1 + 4.60 * 0.71 + 2.80 * 0.86 + 4.10 * 1 + 3.65 * 1 + 1.50 * 1) = 531.2225890264066

p2 = (925.37 * 4.10 * 1 + 1000 * 3.10 * 1 + 736.84 * 1.50 * 1 + 214.95 * 4.60 * 0.71) / max_coefficients = 567.1387622149838

score = 531.2225890264066 * 0.5 + 567.1387622149838 * 0.5 = 549.1806756206952

Rating changes

Show

all results
Date Place Points Reason
2025-07-14 64 -> 63 545.49 -> 549.18

Guardian of the Winds: 100% -> 86%
2025-07-12 64 539.39 -> 545.49

X Russian Championship: 86% -> 71%
2025-07-10 65 -> 64 539.39
2025-07-03 66 -> 65 539.39
2025-06-22 65 -> 66 539.39
2025-06-15 117 -> 65 384.19 -> 539.39

13 bloody tiles: 0% -> 100%
2025-06-14 116 -> 117 384.19
2025-06-11 118 -> 116 384.19
2025-05-19 119 -> 118 384.19
2025-05-17 116 -> 119 384.19

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 925 2025-06-15 6/68 100% 4.10 RR 13 bloody tiles Perm
2 1000 2025-01-07 1/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
3 737 2025-01-04 6/20 100% 1.50 CRR Dirty Riichi Kirov
4 114 2024-08-04 71/80 100% 3.65 RR Riichi over Volga Samara
5 191 2024-07-14 39/48 86% 2.80 RR Guardian of the Winds Yekaterinburg
6 215 2024-05-12 85/108 71% 4.60 RR X Russian Championship Perm