Boiko Bogdan

From Kirov, Russia

Player page

Internal rating (RR)

Rating date Sept. 4, 2026 (latest changes Sept. 3, 2026).

123 place (370.43).

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

p1 = (1000 * 3.10 * 0.43 + 925.37 * 4.10 * 0.71 + 46.51 * 3 * 0.86 + 0 + 0) / (3.10 * 0.43 + 4.10 * 0.71 + 3 * 0.86 + 1 + 1) = 471.00839431891166

p2 = (925.37 * 4.10 * 0.71 + 1000 * 3.10 * 0.43 + 46.51 * 3 * 0.86) / max_coefficients = 269.84685269305646

score = 471.00839431891166 * 0.5 + 269.84685269305646 * 0.5 = 370.42762350598406

Rating changes

Show

all results
Date Place Points Reason
2026-09-02 125 -> 123 370.43
2026-09-01 126 -> 125 370.43
2026-08-31 126 369.99 -> 370.43
2026-08-27 129 -> 126 369.99
2026-08-16 125 -> 129 369.99
2026-08-15 112 -> 125 400.53 -> 369.99

13 bloody tiles: 86% -> 71%
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

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 71% 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