Grigoryan Andrey
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date July 3, 2024 (latest changes July 3, 2024).
174 place (112.13).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 0.86 + 3.05 * 1) = 14.864125000000001
p1 = (538.46 * 1.80 * 0.14 + 548.39 * 1.80 * 0.57 + 43.48 * 1.40 * 0.71 + 0 + 0) / (1.80 * 0.14 + 1.80 * 0.57 + 1.40 * 0.71 + 1 + 1) = 174.06714328380497
p2 = (548.39 * 1.80 * 0.57 + 538.46 * 1.80 * 0.14 + 43.48 * 1.40 * 0.71) / max_coefficients = 50.18862529748639
score = 174.06714328380497 * 0.5 + 50.18862529748639 * 0.5 = 112.12788429064568
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-06-27 | 172 -> 174 | 127.09 -> 112.13 |
Sun tournament: 29% -> 14% |
| 2024-06-25 | 169 -> 172 | 141.31 -> 127.09 |
Earth cup: 71% -> 57% |
| 2024-06-22 | 170 -> 169 | 138.20 -> 141.31 |
Fire cup 2023: 86% -> 71% |
| 2024-06-11 | 180 -> 170 | 136.99 -> 138.20 | |
| 2024-06-09 | 172 -> 180 | 136.99 | |
| 2024-05-25 | 168 -> 172 | 136.99 | |
| 2024-05-19 | 166 -> 168 | 136.99 | |
| 2024-05-12 | 155 -> 166 | 141.16 -> 136.99 | |
| 2024-05-05 | 154 -> 155 | 141.16 | |
| 2024-05-03 | 155 -> 154 | 141.16 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 43 |
|
23/24 | 71% | 1.40 | CRR | Fire cup 2023 | Saint Petersburg | |
| 2 | 548 |
|
15/32 | 57% | 1.80 | CRR | Earth cup | Saint Petersburg | |
| 3 | 538 |
|
19/40 | 14% | 1.80 | CRR | Sun tournament | Saint Petersburg | |
| 4 | 360 |
|
49/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 | Saint Petersburg |