Ionov Roman

From Samara, Russia

Player page

Internal rating (RR)

Rating date June 16, 2026 (latest changes June 15, 2026).

75 place (496.29).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

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 = 404.4500777251478

score = 588.1372549019608 * 0.5 + 404.4500777251478 * 0.5 = 496.2936663135543

Rating changes

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all results
Date Place Points Reason
2026-06-15 76 -> 75 488.96 -> 496.29
2026-06-14 76 488.96

XII Russian Championship: 0% -> 100%

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