Grigoryan Andrey
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Jan. 5, 2025 (latest changes Jan. 5, 2025).
207 place (74.27).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (548.39 * 1.80 * 0.14 + 43.48 * 1.40 * 0.29 + 136.84 * 3.85 * 1 + 0 + 0) / (1.80 * 0.14 + 1.40 * 0.29 + 3.85 * 1 + 1 + 1) = 105.31257683796409
p2 = (136.84 * 3.85 * 1 + 548.39 * 1.80 * 0.14 + 43.48 * 1.40 * 0.29) / max_coefficients = 43.23596214511041
score = 105.31257683796409 * 0.5 + 43.23596214511041 * 0.5 = 74.27426949153725
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-04 | 206 -> 207 | 74.27 | |
| 2025-01-03 | 207 -> 206 | 74.27 | |
| 2024-12-29 | 206 -> 207 | 74.27 | |
| 2024-12-25 | 204 -> 206 | 87.14 -> 74.27 |
Earth cup: 29% -> 14% |
| 2024-12-22 | 204 | 86.28 -> 87.14 |
Fire cup 2023: 43% -> 29% |
| 2024-11-05 | 209 -> 204 | 86.28 | |
| 2024-11-04 | 204 -> 209 | 86.28 | |
| 2024-11-03 | 205 -> 204 | 86.28 | |
| 2024-11-01 | 207 -> 205 | 86.28 | |
| 2024-10-27 | 206 -> 207 | 86.28 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 137 |
|
83/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 2 | 43 |
|
23/24 | 29% | 1.40 | CRR | Fire cup 2023 |
| 3 | 548 |
|
15/32 | 14% | 1.80 | CRR | Earth cup |
| 4 | 538 |
|
19/40 | 0% | 1.80 | CRR | Sun tournament |
| 5 | 360 |
|
49/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 |