Grigoryan Andrey

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date March 9, 2026 (latest changes March 7, 2026).

187 place (199.06).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (136.84 * 3.85 * 0.43 + 118.64 * 3.25 * 0.86 + 828.57 * 1.90 * 1 + 0 + 0) / (3.85 * 0.43 + 3.25 * 0.86 + 1.90 * 1 + 1 + 1) = 255.59747039385485

p2 = (828.57 * 1.90 * 1 + 118.64 * 3.25 * 0.86 + 136.84 * 3.85 * 0.43) / max_coefficients = 142.51371237458193

score = 255.59747039385485 * 0.5 + 142.51371237458193 * 0.5 = 199.0555913842184

Rating changes

Show

all results
Date Place Points Reason
2026-03-02 188 -> 187 199.06
2026-03-01 189 -> 188 197.90 -> 199.06

SPB Riichi Open 2024: 57% -> 43%
2026-02-23 180 -> 189 197.90
2026-02-16 180 196.52 -> 197.90

White Wolf Cup: 100% -> 86%
2026-02-13 182 -> 180 196.52
2026-02-08 181 -> 182 196.52
2026-01-30 182 -> 181 196.52
2026-01-25 180 -> 182 196.52
2026-01-12 181 -> 180 196.52
2026-01-07 180 -> 181 196.52

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 829 2025-04-26 7/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
2 119 2025-02-16 53/60 86% 3.25 RR White Wolf Cup Saint Petersburg
3 137 2024-09-01 83/96 43% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 360 2021-11-28 49/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg