Grigoryan Andrey

From Saint Petersburg, Russia

Player page

Internal rating (RR)

Rating date July 15, 2026 (latest changes July 14, 2026).

208 place (186.45).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (136.84 * 3.85 * 0.14 + 118.64 * 3.25 * 0.57 + 828.57 * 1.90 * 0.71 + 166.67 * 1.70 * 1 + 0) / (3.85 * 0.14 + 3.25 * 0.57 + 1.90 * 0.71 + 1.70 * 1 + 1) = 263.51462668142443

p2 = (828.57 * 1.90 * 0.71 + 166.67 * 1.70 * 1 + 118.64 * 3.25 * 0.57 + 136.84 * 3.85 * 0.14) / max_coefficients = 109.37767872449855

score = 263.51462668142443 * 0.5 + 109.37767872449855 * 0.5 = 186.44615270296148

Rating changes

Show

all results
Date Place Points Reason
2026-07-12 206 -> 208 186.45
2026-07-01 208 -> 206 183.90 -> 186.45

SPB Riichi Open 2024: 29% -> 14%
2026-06-27 209 -> 208 183.90
2026-06-26 206 -> 209 201.82 -> 183.90

Seihoku spring tournament 2025: 86% -> 71%
2026-06-16 206 198.90 -> 201.82

White Wolf Cup: 71% -> 57%
2026-06-15 206 196.51 -> 198.90
2026-06-14 183 -> 206 202.13 -> 196.51
2026-06-09 186 -> 183 202.13
2026-05-26 187 -> 186 202.13
2026-05-17 186 -> 187 202.13

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 71% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
3 119 2025-02-16 53/60 57% 3.25 RR White Wolf Cup Saint Petersburg
4 137 2024-09-01 83/96 14% 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