Ionov Roman

From Samara, Russia

Player page

Common russian riichi rating (CRR)

Rating date Sept. 5, 2026 (latest changes Sept. 4, 2026).

93 place (498.45).

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

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 = 408.7573004542505

score = 588.1372549019608 * 0.5 + 408.7573004542505 * 0.5 = 498.44727767810565

Rating changes

Show

all results
Date Place Points Reason
2026-09-03 94 -> 93 498.45
2026-09-02 95 -> 94 498.45
2026-08-31 97 -> 95 497.79 -> 498.45
2026-08-30 95 -> 97 497.79
2026-08-27 96 -> 95 497.79
2026-08-16 93 -> 96 497.79
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

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