Grigoryan Andrey
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Jan. 3, 2023 (latest changes Jan. 3, 2023).
107 place (200.23).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 3.45 * 0.86) = 14.706995
p1 = (360 * 3.45 * 0.86 + 538.46 * 1.80 * 1 + 0 + 0 + 0) / (3.45 * 0.86 + 1.80 * 1 + 1 + 1 + 1) = 262.1827137957418
p2 = (360 * 3.45 * 0.86 + 538.46 * 1.80 * 1) / max_coefficients = 138.28453739190093
score = 262.1827137957418 * 0.5 + 138.28453739190093 * 0.5 = 200.23362559382136
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-01-03 | 110 -> 107 | 200.23 | |
| 2022-12-19 | 110 | 199.57 -> 200.23 | |
| 2022-12-18 | 107 -> 110 | 199.57 | |
| 2022-12-03 | 107 | 199.57 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 538 |
|
19/40 | 100% | 1.80 | CRR | Sun tournament |
| 2 | 360 |
|
49/76 | 86% | 3.45 | RR | Saint Petersburg Open 2021 |