Petrov Aleksandr
From Kirov, Russia
EMA: 15990461
Online rating
Rating date April 8, 2023 (latest changes April 8, 2023).
112 place (125.85).
how we calculated rating score
max_coefficients = (2.80 * 1 + 2.30 * 1 + 2.60 * 0.71) = 6.95718
p1 = (902.91 * 3.45 * 0.14 + 170.21 * 2.60 * 0.71 + 0 + 0 + 0) / (3.45 * 0.14 + 2.60 * 0.71 + 1 + 1 + 1) = 142.28666859183375
p2 = (902.91 * 3.45 * 0.14 + 170.21 * 2.60 * 0.71) / max_coefficients = 109.42077105953848
score = 142.28666859183375 * 0.5 + 109.42077105953848 * 0.5 = 125.85371982568611
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-04-06 | 169 -> 112 | 288.56 -> 125.85 | |
| 2021-02-01 | 169 | 288.56 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 170 |
|
40/48 | 71% | 2.60 | ONLINE | Demons of autumn wind | Russia |
| 2 | 903 |
|
11/104 | 14% | 3.45 | ONLINE | Riichi Online Open Team Cup | Russia |
| 3 | 385 |
|
25/40 | 0% | 2.60 | ONLINE | Demons of winter wind | Russia |
| 4 | 363 |
|
87/136 | 0% | 3.69 | ONLINE | Riichi Online Open Team Cup | Russia |
| 5 | 346 |
|
71/108 | 0% | 3.50 | ONLINE | Spring tournament | Russia |
| 6 | 49 |
|
137/144 | 0% | 3.71 | ONLINE | Riichi Online Open Team Cup 2020 | Russia |