Biryukov Sergei

From Kurchatov, Russia

Player page

Common russian riichi rating (CRR)

Rating date Oct. 28, 2026 (latest changes Oct. 27, 2026).

304 place (153.37).

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

p1 = (139.86 * 4.71 * 1 + 666.67 * 1.70 * 1 + 0 + 0 + 0) / (4.71 * 1 + 1.70 * 1 + 1 + 1 + 1) = 190.44314558979806

p2 = (666.67 * 1.70 * 1 + 139.86 * 4.71 * 1) / max_coefficients = 116.29266709928618

score = 190.44314558979806 * 0.5 + 116.29266709928618 * 0.5 = 153.36790634454212

Rating changes

Show

all results
Date Place Points Reason
2026-10-27 305 -> 304 153.37
2026-10-26 307 -> 305 153.37
2026-10-24 307 153.37

First Yaroslavl tournament: 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 667 2026-10-24 10/28 100% 1.70 CRR First Yaroslavl tournament Yaroslavl
2 140 2026-06-14 124/144 100% 4.71 RR XII Russian Championship Samara