Boiko Bogdan

From Kirov, Russia

Player page

Internal rating (RR)

Rating date Oct. 17, 2026 (latest changes Oct. 16, 2026).

141 place (316.20).

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

p1 = (1000 * 3.10 * 0.29 + 925.37 * 4.10 * 0.57 + 46.51 * 3 * 0.71 + 0 + 0) / (3.10 * 0.29 + 4.10 * 0.57 + 3 * 0.71 + 1 + 1) = 427.7733537186741

p2 = (925.37 * 4.10 * 0.57 + 1000 * 3.10 * 0.29 + 46.51 * 3 * 0.71) / max_coefficients = 204.62362102530824

score = 427.7733537186741 * 0.5 + 204.62362102530824 * 0.5 = 316.1984873719912

Rating changes

Show

all results
Date Place Points Reason
2026-10-15 133 -> 141 352.11 -> 316.20

13 bloody tiles: 71% -> 57%
2026-10-13 135 -> 133 352.11
2026-10-03 139 -> 135 342.08 -> 352.11

Two roosters and Chuckles: 86% -> 71%
2026-10-02 138 -> 139 342.08
2026-09-26 139 -> 138 342.08
2026-09-07 127 -> 139 370.43 -> 342.08

Moscow Open Riichi Marathon: 43% -> 29%
2026-09-06 123 -> 127 370.43
2026-09-02 125 -> 123 370.43
2026-09-01 126 -> 125 370.43
2026-08-31 126 369.99 -> 370.43

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 47 2025-08-03 42/44 71% 3.00 RR Two roosters and Chuckles Kirov
2 925 2025-06-15 6/68 57% 4.10 RR 13 bloody tiles Perm
3 1000 2025-01-07 🥇 1/32 29% 3.10 RR Moscow Open Riichi Marathon Moscow
4 114 2024-08-04 71/80 0% 3.65 RR Riichi over Volga Samara
5 191 2024-07-14 39/48 0% 2.80 RR Guardian of the Winds Yekaterinburg
6 215 2024-05-12 85/108 0% 4.60 RR X Russian Championship Perm