Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

Rating date Jan. 3, 2025 (latest changes Jan. 3, 2025).

108 place (298.87).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (682.24 * 4 * 0.57 + 494.74 * 3.85 * 1 + 0 + 0 + 0) / (4 * 0.57 + 3.85 * 1 + 1 + 1 + 1) = 379.1836332588992

p2 = (494.74 * 3.85 * 1 + 682.24 * 4 * 0.57) / max_coefficients = 218.55331230283912

score = 379.1836332588992 * 0.5 + 218.55331230283912 * 0.5 = 298.8684727808692

Rating changes

Show

all results
Date Place Points Reason
2025-01-03 105 -> 108 320.09 -> 298.87

SPB Riichi Open 2023: 71% -> 57%
2024-11-06 108 -> 105 320.09
2024-11-03 107 -> 108 340.31 -> 320.09

SPB Riichi Open 2023: 86% -> 71%
2024-10-13 96 -> 107 343.08 -> 340.31
2024-10-11 99 -> 96 343.08
2024-09-06 100 -> 99 343.08
2024-09-03 94 -> 100 357.44 -> 343.08

SPB Riichi Open 2023: 100% -> 86%
2024-09-01 77 -> 94 313.88 -> 357.44

SPB Riichi Open 2024: 0% -> 100%
2023-11-06 83 -> 77 309.20 -> 313.88
2023-10-12 87 -> 83 305.05 -> 309.20

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 495 2024-09-01 49/96 100% 3.85 RR SPB Riichi Open 2024
2 682 2023-09-03 35/108 57% 4.00 RR SPB Riichi Open 2023
3 627 2021-11-28 29/76 0% 3.45 RR Saint Petersburg Open 2021
4 476 2019-11-24 34/64 0% 3.45 EMA Saint Petersburg Open 2019
5 513 2019-06-02 20/40 0% 2.90 RR Summer Cup 2019
6 256 2018-12-23 30/40 0% 2.90 RR North Cup 2018
7 304 2018-09-23 17/24 0% 2.50 RR West cup 2018
8 408 2018-06-11 43/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
9 516 2018-03-04 16/32 0% 2.70 RR East Cup 2018
10 60 2017-12-11 79/84 0% 3.40 EMA VI Russian Riichi Championship 2017