Ionov Roman

From Samara, Russia

Player page

Common russian riichi rating (CRR)

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

93 place (497.79).

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

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 = 407.43531694696

score = 588.1372549019608 * 0.5 + 407.43531694696 * 0.5 = 497.78628592446034

Rating changes

Show

all results
Date Place Points Reason
2026-08-15 93 496.29 -> 497.79
2026-08-13 94 -> 93 496.29
2026-08-03 96 -> 94 496.29
2026-07-26 95 -> 96 496.29
2026-07-25 93 -> 95 496.29
2026-07-18 92 -> 93 496.29
2026-07-14 91 -> 92 496.29
2026-07-13 92 -> 91 496.29
2026-07-12 90 -> 92 496.29
2026-07-11 88 -> 90 496.29

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