Grigoryan Andrey
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Feb. 20, 2024 (latest changes Feb. 20, 2024).
133 place (187.26).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.71 + 2.90 * 1) = 13.650060000000002
p1 = (538.46 * 1.80 * 0.57 + 548.39 * 1.80 * 1 + 43.48 * 1.40 * 1 + 0 + 0) / (1.80 * 0.57 + 1.80 * 1 + 1.40 * 1 + 1 + 1) = 257.17024269007726
p2 = (548.39 * 1.80 * 1 + 538.46 * 1.80 * 0.57 + 43.48 * 1.40 * 1) / max_coefficients = 117.34673693742003
score = 257.17024269007726 * 0.5 + 117.34673693742003 * 0.5 = 187.25848981374864
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-02-20 | 134 -> 133 | 187.26 | |
| 2024-02-12 | 136 -> 134 | 187.26 | |
| 2024-01-20 | 137 -> 136 | 187.26 | |
| 2024-01-06 | 137 | 184.79 -> 187.26 | |
| 2024-01-05 | 138 -> 137 | 184.79 | |
| 2023-12-27 | 136 -> 138 | 195.23 -> 184.79 |
Sun tournament: 71% -> 57% |
| 2023-12-19 | 141 -> 136 | 195.23 | |
| 2023-12-18 | 142 -> 141 | 195.23 | |
| 2023-12-12 | 143 -> 142 | 195.23 | |
| 2023-11-28 | 136 -> 143 | 227.67 -> 195.23 |
Saint Petersburg Open 2021: 14% -> 0% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 43 |
|
23/24 | 100% | 1.40 | CRR | Fire cup 2023 |
| 2 | 548 |
|
15/32 | 100% | 1.80 | CRR | Earth cup |
| 3 | 538 |
|
19/40 | 57% | 1.80 | CRR | Sun tournament |
| 4 | 360 |
|
49/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 |