Sobolev Sergei

From Izhevsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date May 23, 2026 (latest changes May 23, 2026).

299 place (119.87).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85

p1 = (368.42 * 1.30 * 1 + 333.33 * 1.60 * 1 + 0 + 0 + 0) / (1.30 * 1 + 1.60 * 1 + 1 + 1 + 1) = 171.5728813559322

p2 = (333.33 * 1.60 * 1 + 368.42 * 1.30 * 1) / max_coefficients = 68.16700336700336

score = 171.5728813559322 * 0.5 + 68.16700336700336 * 0.5 = 119.86994236146778

Rating changes

Show

all results
Date Place Points Reason
2026-05-19 300 -> 299 119.87
2026-05-17 298 -> 300 119.87
2026-05-15 299 -> 298 119.87
2026-05-12 306 -> 299 119.87
2026-05-11 303 -> 306 119.87
2026-05-05 304 -> 303 119.87
2026-05-03 295 -> 304 119.64 -> 119.87
2026-04-19 285 -> 295 119.64
2026-04-11 284 -> 285 119.64
2026-04-09 285 -> 284 119.64

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 333 2026-03-21 11/16 100% 1.60 CRR Grief from Uma Izhevsk
2 368 2026-01-03 13/20 100% 1.30 CRR The Birth of the Club Izhevsk