Grigoryan Andrey

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Sept. 5, 2025 (latest changes Sept. 3, 2025).

179 place (196.85).

max_coefficients = (4.10 * 1 + 3.75 * 1 + 3.50 * 1 + 3.45 * 1) = 14.8

p1 = (136.84 * 3.85 * 0.86 + 118.64 * 3.25 * 1 + 828.57 * 1.90 * 1 + 0 + 0) / (3.85 * 0.86 + 3.25 * 1 + 1.90 * 1 + 1 + 1) = 230.7634522458967

p2 = (828.57 * 1.90 * 1 + 136.84 * 3.85 * 0.86 + 118.64 * 3.25 * 1) / max_coefficients = 162.93513513513514

score = 230.7634522458967 * 0.5 + 162.93513513513514 * 0.5 = 196.84929369051594

Rating changes

Show

all results
Date Place Points Reason
2025-09-03 183 -> 179 196.85
2025-09-01 183 194.83 -> 196.85

SPB Riichi Open 2024: 100% -> 86%
2025-08-31 178 -> 183 194.83
2025-08-04 179 -> 178 194.03 -> 194.83
2025-08-03 174 -> 179 194.03
2025-07-13 170 -> 174 194.03
2025-07-12 170 192.52 -> 194.03
2025-07-10 171 -> 170 192.52
2025-07-03 172 -> 171 192.52
2025-06-15 160 -> 172 194.87 -> 192.52

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 829 2025-04-26 7/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
2 119 2025-02-16 53/60 100% 3.25 RR White Wolf Cup Saint Petersburg
3 137 2024-09-01 83/96 86% 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