Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

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

109 place (375.83).

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

p1 = (682.24 * 4 * 0.29 + 494.74 * 3.85 * 1 + 169.49 * 3.25 * 1 + 885.71 * 1.90 * 1 + 0) / (4 * 0.29 + 3.85 * 1 + 3.25 * 1 + 1.90 * 1 + 1) = 441.3720070359335

p2 = (494.74 * 3.85 * 1 + 885.71 * 1.90 * 1 + 682.24 * 4 * 0.29 + 169.49 * 3.25 * 1) / max_coefficients = 310.2914826498423

score = 441.3720070359335 * 0.5 + 310.2914826498423 * 0.5 = 375.83174484288793

Rating changes

Show

all results
Date Place Points Reason
2025-05-03 96 -> 109 394.01 -> 375.83

SPB Riichi Open 2023: 43% -> 29%
2025-04-26 130 -> 96 281.97 -> 394.01

Seihoku spring tournament 2025: 0% -> 100%
2025-04-11 131 -> 130 281.97
2025-03-30 132 -> 131 281.97
2025-03-03 130 -> 132 302.97 -> 281.97

SPB Riichi Open 2023: 57% -> 43%
2025-03-02 127 -> 130 302.97
2025-02-16 122 -> 127 298.87 -> 302.97

White Wolf Cup: 0% -> 100%
2025-02-02 117 -> 122 298.87
2025-01-26 112 -> 117 298.87
2025-01-07 108 -> 112 298.87

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 886 2025-04-26 5/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
2 169 2025-02-16 50/60 100% 3.25 RR White Wolf Cup Saint Petersburg
3 495 2024-09-01 49/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
4 682 2023-09-03 35/108 29% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
5 627 2021-11-28 29/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
6 476 2019-11-24 34/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
7 513 2019-06-02 20/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
8 256 2018-12-23 30/40 0% 2.90 RR North Cup 2018 Saint Petersburg
9 304 2018-09-23 17/24 0% 2.50 RR West cup 2018 Saint Petersburg
10 408 2018-06-11 43/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
11 516 2018-03-04 16/32 0% 2.70 RR East Cup 2018 Saint Petersburg
12 60 2017-12-11 79/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg