Petrov Andrei

From Saint Petersburg, Russia

Player page

Common russian riichi rating (CRR)

Rating date Nov. 13, 2026 (latest changes Nov. 8, 2026).

315 place (152.45).

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

p1 = (0 * 1.70 * 1 + 645.16 * 1.80 * 1 + 140.85 * 3.40 * 1 + 85.71 * 1.90 * 1 + 0) / (1.70 * 1 + 1.80 * 1 + 3.40 * 1 + 1.90 * 1 + 1) = 183.9816326530612

p2 = (645.16 * 1.80 * 1 + 140.85 * 3.40 * 1 + 85.71 * 1.90 * 1 + 0 * 1.70 * 1) / max_coefficients = 120.92689470154258

score = 183.9816326530612 * 0.5 + 120.92689470154258 * 0.5 = 152.4542636773019

Rating changes

Show

all results
Date Place Points Reason
2026-11-08 313 -> 315 152.45
2026-11-04 314 -> 313 150.49 -> 152.45
2026-11-02 315 -> 314 150.49
2026-11-01 311 -> 315 150.49
2026-10-31 309 -> 311 145.36 -> 150.49

Seihoku autumn tournament 2026: 0% -> 100%
2026-10-26 311 -> 309 145.36
2026-10-24 307 -> 311 145.36
2026-10-16 308 -> 307 145.36
2026-10-15 309 -> 308 145.36
2026-10-13 313 -> 309 145.36

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 86 2026-10-31 33/36 100% 1.90 RR Seihoku autumn tournament 2026 Saint Petersburg
2 141 2026-09-06 62/72 100% 3.40 RR Sunset Wolf Cup 2026 Saint Petersburg
3 645 2026-07-25 12/32 100% 1.80 RR Seihoku Summer Tournament 2026 Saint Petersburg
4 0 2026-04-11 31/31 100% 1.70 RR Seihoku spring tournament 2026 Saint Petersburg