Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

Rating date Feb. 16, 2025 (latest changes Feb. 16, 2025).

127 place (302.97).

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 + 169.49 * 3.25 * 1 + 0 + 0) / (4 * 0.57 + 3.85 * 1 + 3.25 * 1 + 1 + 1) = 352.63139404159637

p2 = (494.74 * 3.85 * 1 + 682.24 * 4 * 0.57 + 169.49 * 3.25 * 1) / max_coefficients = 253.30725552050473

score = 352.63139404159637 * 0.5 + 253.30725552050473 * 0.5 = 302.96932478105055

Rating changes

Show

all results
Date Place Points Reason
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
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

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 169 2025-02-16 50/60 100% 3.25 RR White Wolf Cup
2 495 2024-09-01 49/96 100% 3.85 RR SPB Riichi Open 2024
3 682 2023-09-03 35/108 57% 4.00 RR SPB Riichi Open 2023
4 627 2021-11-28 29/76 0% 3.45 RR Saint Petersburg Open 2021
5 476 2019-11-24 34/64 0% 3.45 EMA Saint Petersburg Open 2019
6 513 2019-06-02 20/40 0% 2.90 RR Summer Cup 2019
7 256 2018-12-23 30/40 0% 2.90 RR North Cup 2018
8 304 2018-09-23 17/24 0% 2.50 RR West cup 2018
9 408 2018-06-11 43/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
10 516 2018-03-04 16/32 0% 2.70 RR East Cup 2018
11 60 2017-12-11 79/84 0% 3.40 EMA VI Russian Riichi Championship 2017