USHAKOV Igor

From Moscow, Russia

EMA: 15990490

Player page

Common russian riichi rating (CRR)

Rating date July 26, 2026 (latest changes July 26, 2026).

254 place (230.85).

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

p1 = (697.67 * 3 * 1 + 51.95 * 3.45 * 1 + 216.78 * 4.71 * 1 + 0 + 0) / (3 * 1 + 3.45 * 1 + 4.71 * 1 + 1 + 1) = 250.25

p2 = (697.67 * 3 * 1 + 216.78 * 4.71 * 1 + 51.95 * 3.45 * 1) / max_coefficients = 211.45927439834443

score = 250.25 * 0.5 + 211.45927439834443 * 0.5 = 230.8546371991722

Rating changes

Show

all results
Date Place Points Reason
2026-07-18 251 -> 254 230.85
2026-07-17 252 -> 251 230.85
2026-07-12 250 -> 252 230.85
2026-07-11 248 -> 250 230.85
2026-07-04 247 -> 248 230.85
2026-07-02 248 -> 247 230.85
2026-07-01 249 -> 248 230.85
2026-06-27 250 -> 249 230.85
2026-06-16 252 -> 250 230.85
2026-06-15 252 227.02 -> 230.85

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 217 2026-06-14 113/144 100% 4.71 RR XII Russian Championship Samara
2 52 2025-08-31 74/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
3 698 2025-08-03 14/44 100% 3.00 RR Two roosters and Chuckles Kirov