USHAKOV Igor

From Moscow, Russia

EMA: 15990490

Player page

Internal rating (RR)

Rating date July 5, 2026 (latest changes July 3, 2026).

185 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
2026-07-02 186 -> 185 230.85
2026-07-01 188 -> 186 230.85
2026-06-26 189 -> 188 230.85
2026-06-16 190 -> 189 230.85
2026-06-15 190 227.02 -> 230.85
2026-06-14 185 -> 190 196.73 -> 227.02

XII Russian Championship: 0% -> 100%
2026-06-09 188 -> 185 196.73
2026-05-17 187 -> 188 196.73
2026-05-14 189 -> 187 196.73
2026-05-12 197 -> 189 196.73

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