Ionov Roman

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Nov. 6, 2026 (latest changes Nov. 4, 2026).

92 place (505.30).

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

p1 = (727.27 * 3 * 1 + 874.13 * 4.71 * 1 + 0 + 0 + 0) / (3 * 1 + 4.71 * 1 + 1 + 1 + 1) = 588.1372549019608

p2 = (874.13 * 4.71 * 1 + 727.27 * 3 * 1) / max_coefficients = 422.4647887323944

score = 588.1372549019608 * 0.5 + 422.4647887323944 * 0.5 = 505.30102181717757

Rating changes

Show

all results
Date Place Points Reason
2026-11-04 94 -> 92 498.45 -> 505.30
2026-11-01 93 -> 94 498.45
2026-10-31 92 -> 93 498.45
2026-10-27 93 -> 92 498.45
2026-10-17 91 -> 93 498.45
2026-10-16 92 -> 91 498.45
2026-10-15 93 -> 92 498.45
2026-10-13 94 -> 93 498.45
2026-10-03 93 -> 94 498.45
2026-09-26 95 -> 93 498.45

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 874 2026-06-14 19/144 100% 4.71 RR XII Russian Championship Samara
2 727 2026-01-25 16/56 100% 3.00 RR Riichi On Ice 2026 Samara