Grigoryan Andrey
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date July 2, 2025 (latest changes June 27, 2025).
218 place (192.52).
how we calculated rating score
max_coefficients = (4.10 * 1 + 4.60 * 0.86 + 3.85 * 1 + 3.75 * 1) = 15.64266
p1 = (136.84 * 3.85 * 1 + 118.64 * 3.25 * 1 + 828.57 * 1.90 * 1 + 0 + 0) / (3.85 * 1 + 3.25 * 1 + 1.90 * 1 + 1 + 1) = 226.06545454545457
p2 = (828.57 * 1.90 * 1 + 136.84 * 3.85 * 1 + 118.64 * 3.25 * 1) / max_coefficients = 158.97040528912603
score = 226.06545454545457 * 0.5 + 158.97040528912603 * 0.5 = 192.5179299172903
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-06-27 | 219 -> 218 | 192.52 | |
| 2025-06-26 | 220 -> 219 | 192.52 | |
| 2025-06-25 | 221 -> 220 | 192.52 | |
| 2025-06-22 | 222 -> 221 | 192.52 | |
| 2025-06-15 | 214 -> 222 | 194.87 -> 192.52 | |
| 2025-06-14 | 208 -> 214 | 194.87 | |
| 2025-06-11 | 214 -> 208 | 194.87 | |
| 2025-05-17 | 212 -> 214 | 194.87 | |
| 2025-05-12 | 212 | 191.48 -> 194.87 | |
| 2025-05-03 | 210 -> 212 | 191.48 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 829 |
|
7/36 | 100% | 1.90 | RR | Seihoku spring tournament 2025 | Saint Petersburg |
| 2 | 119 |
|
53/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg |
| 3 | 137 |
|
83/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 4 | 43 |
|
23/24 | 0% | 1.40 | CRR | Fire cup 2023 | Saint Petersburg |
| 5 | 548 |
|
15/32 | 0% | 1.80 | CRR | Earth cup | Saint Petersburg |
| 6 | 538 |
|
19/40 | 0% | 1.80 | CRR | Sun tournament | Saint Petersburg |
| 7 | 360 |
|
49/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |