Sobolev Sergei

From Izhevsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date Nov. 9, 2026 (latest changes Nov. 8, 2026).

227 place (277.94).

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

p1 = (368.42 * 1.30 * 1 + 333.33 * 1.60 * 1 + 733.33 * 2.30 * 1 + 0 + 0) / (1.30 * 1 + 1.60 * 1 + 2.30 * 1 + 1 + 1) = 374.85416666666663

p2 = (733.33 * 2.30 * 1 + 333.33 * 1.60 * 1 + 368.42 * 1.30 * 1) / max_coefficients = 181.01609657947685

score = 374.85416666666663 * 0.5 + 181.01609657947685 * 0.5 = 277.93513162307175

Rating changes

Show

all results
Date Place Points Reason
2026-11-08 222 -> 227 277.94
2026-11-04 223 -> 222 275.00 -> 277.94
2026-11-03 224 -> 223 275.00
2026-11-01 222 -> 224 275.00
2026-10-31 218 -> 222 275.00
2026-10-26 220 -> 218 275.00
2026-10-24 218 -> 220 275.00
2026-10-16 219 -> 218 275.00
2026-10-14 220 -> 219 275.00
2026-10-13 224 -> 220 275.00

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 733 2026-05-31 5/16 100% 2.30 CRR Nagashi mangal Izhevsk
2 333 2026-03-21 11/16 100% 1.60 CRR Grief from Uma Izhevsk
3 368 2026-01-03 13/20 100% 1.30 CRR The Birth of the Club Izhevsk