Maniakhin Petr
From Saint Petersburg, Russia
EMA: 15990315
Internal rating (RR)
Rating date Oct. 12, 2023 (latest changes Oct. 12, 2023).
83 place (309.20).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.57) = 14.26417
p1 = (626.67 * 3.45 * 0.14 + 682.24 * 4 * 1 + 0 + 0 + 0) / (3.45 * 0.14 + 4 * 1 + 1 + 1 + 1) = 405.43413490315294
p2 = (682.24 * 4 * 1 + 626.67 * 3.45 * 0.14) / max_coefficients = 212.9755884849942
score = 405.43413490315294 * 0.5 + 212.9755884849942 * 0.5 = 309.20486169407354
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-10-12 | 87 -> 83 | 305.05 -> 309.20 | |
2023-09-28 | 84 -> 87 | 322.28 -> 305.05 |
Saint Petersburg Open 2021: 29% -> 14% |
2023-09-20 | 85 -> 84 | 322.28 | |
2023-09-03 | 103 -> 85 | 213.15 -> 322.28 |
SPB Riichi Open 2023: 0% -> 100% |
2021-02-01 | 117 -> 103 | 347.45 -> 213.15 | |
2020-02-01 | 117 | 347.45 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 682 |
|
35/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
2 | 627 |
|
29/76 | 14% | 3.45 | RR | Saint Petersburg Open 2021 |
3 | 476 |
|
34/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 |
4 | 513 |
|
20/40 | 0% | 2.90 | RR | Summer Cup 2019 |
5 | 256 |
|
30/40 | 0% | 2.90 | RR | North Cup 2018 |
6 | 304 |
|
17/24 | 0% | 2.50 | RR | West cup 2018 |
7 | 408 |
|
43/72 | 0% | 3.55 | EMA | RCR Saint Petersburg South Cup 2018 |
8 | 516 |
|
16/32 | 0% | 2.70 | RR | East Cup 2018 |
9 | 60 |
|
79/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |