Sobolev Sergei

From Izhevsk, Russia

Player page

Common russian riichi rating (CRR)

Rating date June 14, 2026 (latest changes June 14, 2026).

201 place (278.30).

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 + 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 = 181.74747474747474

score = 374.85416666666663 * 0.5 + 181.74747474747474 * 0.5 = 278.30082070707067

Rating changes

Show

all results
Date Place Points Reason
2026-06-14 202 -> 201 278.30
2026-06-13 203 -> 202 278.30
2026-06-04 204 -> 203 278.30
2026-06-02 205 -> 204 278.30
2026-05-31 297 -> 205 119.87 -> 278.30

Nagashi mangal: 0% -> 100%
2026-05-25 299 -> 297 119.87
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

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