USHAKOV Igor

From Moscow, Russia

EMA: 15990490

Player page

Common russian riichi rating (CRR)

Rating date Aug. 16, 2026 (latest changes Aug. 16, 2026).

265 place (214.43).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 15.459999999999999

p1 = (697.67 * 3 * 0.86 + 51.95 * 3.45 * 1 + 216.78 * 4.71 * 1 + 0 + 0) / (3 * 0.86 + 3.45 * 1 + 4.71 * 1 + 1 + 1) = 235.18415244319115

p2 = (697.67 * 3 * 0.86 + 216.78 * 4.71 * 1 + 51.95 * 3.45 * 1) / max_coefficients = 193.6739974126779

score = 235.18415244319115 * 0.5 + 193.6739974126779 * 0.5 = 214.42907492793452

Rating changes

Show

all results
Date Place Points Reason
2026-08-15 265 213.72 -> 214.43
2026-08-13 268 -> 265 213.72
2026-08-04 271 -> 268 213.72
2026-08-03 258 -> 271 230.85 -> 213.72

Two roosters and Chuckles: 100% -> 86%
2026-08-02 255 -> 258 230.85
2026-07-25 254 -> 255 230.85
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

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 86% 3.00 RR Two roosters and Chuckles Kirov