Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

Rating date Sept. 28, 2023 (latest changes Sept. 28, 2023).

88 place (305.05).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915

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 = 204.6713869883375

score = 405.43413490315294 * 0.5 + 204.6713869883375 * 0.5 = 305.0527609457452

Rating changes

Show

all results
Date Place Points Reason
2023-09-28 85 -> 88 322.28 -> 305.05

Saint Petersburg Open 2021: 29% -> 14%
2023-09-20 86 -> 85 322.28
2023-09-03 104 -> 86 213.15 -> 322.28

SPB Riichi Open 2023: 0% -> 100%
2021-02-01 118 -> 104 347.45 -> 213.15
2020-02-01 118 347.45

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 682 2023-09-03 35/108 100% 4.00 RR SPB Riichi Open 2023
2 627 2021-11-28 29/76 14% 3.45 RR Saint Petersburg Open 2021
3 476 2019-11-24 34/64 0% 3.45 EMA Saint Petersburg Open 2019
4 513 2019-06-02 20/40 0% 2.90 RR Summer Cup 2019
5 256 2018-12-23 30/40 0% 2.90 RR North Cup 2018
6 304 2018-09-23 17/24 0% 2.50 RR West cup 2018
7 408 2018-06-11 43/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
8 516 2018-03-04 16/32 0% 2.70 RR East Cup 2018
9 60 2017-12-11 79/84 0% 3.40 EMA VI Russian Riichi Championship 2017