USHAKOV Igor

From Moscow, Russia

EMA: 15990490

Player page

Internal rating (RR)

Rating date Sept. 4, 2026 (latest changes Sept. 3, 2026).

192 place (217.60).

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

p1 = (697.67 * 3 * 0.86 + 51.95 * 3.45 * 0.86 + 216.78 * 4.71 * 1 + 0 + 0) / (3 * 0.86 + 3.45 * 0.86 + 4.71 * 1 + 1 + 1) = 242.56565150619429

p2 = (697.67 * 3 * 0.86 + 216.78 * 4.71 * 1 + 51.95 * 3.45 * 0.86) / max_coefficients = 192.6404931862427

score = 242.56565150619429 * 0.5 + 192.6404931862427 * 0.5 = 217.60307234621848

Rating changes

Show

all results
Date Place Points Reason
2026-09-01 194 -> 192 217.60
2026-08-31 194 214.43 -> 217.60

SPB Riichi Open 2025: 100% -> 86%
2026-08-27 195 -> 194 214.43
2026-08-26 196 -> 195 214.43
2026-08-16 195 -> 196 214.43
2026-08-15 196 -> 195 213.72 -> 214.43
2026-08-13 199 -> 196 213.72
2026-08-04 201 -> 199 213.72
2026-08-03 190 -> 201 230.85 -> 213.72

Two roosters and Chuckles: 100% -> 86%
2026-08-02 192 -> 190 230.85

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 86% 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