Grigoryan Andrey
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date May 1, 2024 (latest changes May 1, 2024).
154 place (141.16).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 2.90 * 1) = 13.700000000000001
p1 = (538.46 * 1.80 * 0.29 + 548.39 * 1.80 * 0.71 + 43.48 * 1.40 * 0.86 + 0 + 0) / (1.80 * 0.29 + 1.80 * 0.71 + 1.40 * 0.86 + 1 + 1) = 206.83448201378417
p2 = (548.39 * 1.80 * 0.71 + 538.46 * 1.80 * 0.29 + 43.48 * 1.40 * 0.86) / max_coefficients = 75.48613138686132
score = 206.83448201378417 * 0.5 + 75.48613138686132 * 0.5 = 141.16030670032274
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-05-01 | 156 -> 154 | 141.16 | |
| 2024-04-27 | 147 -> 156 | 154.33 -> 141.16 |
Sun tournament: 43% -> 29% |
| 2024-04-25 | 143 -> 147 | 167.05 -> 154.33 |
Earth cup: 86% -> 71% |
| 2024-04-22 | 145 -> 143 | 163.96 -> 167.05 |
Fire cup 2023: 100% -> 86% |
| 2024-04-20 | 146 -> 145 | 163.96 | |
| 2024-04-17 | 147 -> 146 | 163.96 | |
| 2024-03-30 | 139 -> 147 | 163.96 | |
| 2024-03-20 | 143 -> 139 | 163.96 | |
| 2024-03-10 | 139 -> 143 | 166.37 -> 163.96 | |
| 2024-03-06 | 139 | 164.14 -> 166.37 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 43 |
|
23/24 | 86% | 1.40 | CRR | Fire cup 2023 |
| 2 | 548 |
|
15/32 | 71% | 1.80 | CRR | Earth cup |
| 3 | 538 |
|
19/40 | 29% | 1.80 | CRR | Sun tournament |
| 4 | 360 |
|
49/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 |