USHAKOV Igor

From Moscow, Russia

EMA: 15990490

Player page

Common russian riichi rating (CRR)

Rating date Nov. 9, 2026 (latest changes Nov. 8, 2026).

284 place (205.49).

max_coefficients = (4.71 * 1 + 3.40 * 1 + 3.40 * 1 + 3.40 * 1) = 14.91

p1 = (697.67 * 3 * 0.71 + 51.95 * 3.45 * 0.71 + 216.78 * 4.71 * 1 + 0 + 0) / (3 * 0.71 + 3.45 * 0.71 + 4.71 * 1 + 1 + 1) = 233.63657289081652

p2 = (697.67 * 3 * 0.71 + 216.78 * 4.71 * 1 + 51.95 * 3.45 * 0.71) / max_coefficients = 177.3386988598256

score = 233.63657289081652 * 0.5 + 177.3386988598256 * 0.5 = 205.48763587532108

Rating changes

Show

all results
Date Place Points Reason
2026-11-08 281 -> 284 205.49
2026-11-04 283 -> 281 202.61 -> 205.49
2026-11-01 279 -> 283 202.61
2026-10-31 279 199.65 -> 202.61

SPB Riichi Open 2025: 86% -> 71%
2026-10-26 278 -> 279 199.65
2026-10-24 276 -> 278 199.65
2026-10-16 277 -> 276 199.65
2026-10-14 278 -> 277 199.65
2026-10-13 282 -> 278 199.65
2026-10-10 280 -> 282 199.65

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 71% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
3 698 2025-08-03 14/44 71% 3.00 RR Two roosters and Chuckles Kirov