Boiko Bogdan

From Kirov, Russia

Player page

Internal rating (RR)

Rating date Aug. 14, 2026 (latest changes Aug. 13, 2026).

112 place (400.53).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (1000 * 3.10 * 0.43 + 925.37 * 4.10 * 0.86 + 46.51 * 3 * 0.86 + 0 + 0) / (3.10 * 0.43 + 4.10 * 0.86 + 3 * 0.86 + 1 + 1) = 499.26546116610575

p2 = (925.37 * 4.10 * 0.86 + 1000 * 3.10 * 0.43 + 46.51 * 3 * 0.86) / max_coefficients = 301.7905999122904

score = 499.26546116610575 * 0.5 + 301.7905999122904 * 0.5 = 400.5280305391981

Rating changes

Show

all results
Date Place Points Reason
2026-08-13 113 -> 112 400.53
2026-08-04 102 -> 113 419.13 -> 400.53

Riichi over Volga: 14% -> 0%
2026-08-03 110 -> 102 408.64 -> 419.13

Two roosters and Chuckles: 100% -> 86%
2026-08-02 111 -> 110 408.64
2026-07-26 112 -> 111 408.64
2026-07-25 110 -> 112 408.64
2026-07-18 109 -> 110 408.64
2026-07-14 97 -> 109 431.03 -> 408.64

Guardian of the Winds: 14% -> 0%
2026-07-13 98 -> 97 431.03
2026-07-12 96 -> 98 431.03

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 47 2025-08-03 42/44 86% 3.00 RR Two roosters and Chuckles Kirov
2 925 2025-06-15 6/68 86% 4.10 RR 13 bloody tiles Perm
3 1000 2025-01-07 🥇 1/32 43% 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