Grigoryan Andrey

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date Sept. 16, 2026 (latest changes Sept. 13, 2026).

229 place (152.84).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (118.64 * 3.25 * 0.43 + 828.57 * 1.90 * 0.57 + 166.67 * 1.70 * 1 + 0 + 0) / (3.25 * 0.43 + 1.90 * 0.57 + 1.70 * 1 + 1 + 1) = 218.19632571079902

p2 = (828.57 * 1.90 * 0.57 + 166.67 * 1.70 * 1 + 118.64 * 3.25 * 0.43) / max_coefficients = 87.48539909149902

score = 218.19632571079902 * 0.5 + 87.48539909149902 * 0.5 = 152.84086240114902

Rating changes

Show

all results
Date Place Points Reason
2026-09-06 223 -> 229 152.84
2026-09-02 224 -> 223 152.84
2026-09-01 220 -> 224 170.42 -> 152.84

SPB Riichi Open 2024: 14% -> 0%
2026-08-31 220 170.27 -> 170.42
2026-08-27 221 -> 220 170.27
2026-08-26 208 -> 221 190.67 -> 170.27

Seihoku spring tournament 2025: 71% -> 57%
2026-08-16 208 186.85 -> 190.67

White Wolf Cup: 57% -> 43%
2026-08-15 208 186.45 -> 186.85
2026-08-13 209 -> 208 186.45
2026-08-04 214 -> 209 186.45

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 167 2026-04-11 26/31 100% 1.70 RR Seihoku spring tournament 2026 Saint Petersburg
2 829 2025-04-26 7/36 57% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
3 119 2025-02-16 53/60 43% 3.25 RR White Wolf Cup Saint Petersburg
4 137 2024-09-01 83/96 0% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
5 360 2021-11-28 49/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg