Boiko Bogdan

From Kirov, Russia

Player page

Internal rating (RR)

Rating date May 20, 2025 (latest changes May 12, 2025).

123 place (330.28).

max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266

p1 = (214.95 * 4.60 * 0.86 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1 + 1000 * 3.10 * 1 + 0) / (4.60 * 0.86 + 2.80 * 1 + 3.65 * 1 + 3.10 * 1 + 1) = 338.0663039083232

p2 = (1000 * 3.10 * 1 + 214.95 * 4.60 * 0.86 + 191.49 * 2.80 * 1 + 113.92 * 3.65 * 1) / max_coefficients = 322.48993922064994

score = 338.0663039083232 * 0.5 + 322.48993922064994 * 0.5 = 330.2781215644866

Rating changes

Show

all results
Date Place Points Reason
2025-05-12 124 -> 123 325.38 -> 330.28

X Russian Championship: 100% -> 86%
2025-05-10 125 -> 124 325.38
2025-05-03 123 -> 125 325.38
2025-04-26 119 -> 123 325.38
2025-04-11 120 -> 119 325.38
2025-03-03 121 -> 120 325.38
2025-03-02 117 -> 121 325.38
2025-02-16 110 -> 117 325.38
2025-02-11 113 -> 110 325.38
2025-02-02 109 -> 113 325.38

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 1000 2025-01-07 1/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
2 114 2024-08-04 71/80 100% 3.65 RR Riichi over Volga Samara
3 191 2024-07-14 39/48 100% 2.80 RR Guardian of the Winds Yekaterinburg
4 215 2024-05-12 85/108 86% 4.60 RR X Russian Championship Perm