Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

Rating date June 16, 2026 (latest changes June 15, 2026).

92 place (449.45).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (494.74 * 3.85 * 0.29 + 169.49 * 3.25 * 0.71 + 885.71 * 1.90 * 0.86 + 584.42 * 3.45 * 1 + 540.54 * 3.40 * 1) / (3.85 * 0.29 + 3.25 * 0.71 + 1.90 * 0.86 + 3.45 * 1 + 3.40 * 1) = 523.877911681685

p2 = (584.42 * 3.45 * 1 + 540.54 * 3.40 * 1 + 885.71 * 1.90 * 0.86 + 494.74 * 3.85 * 0.29) / max_coefficients = 375.0217508416212

score = 523.877911681685 * 0.5 + 375.0217508416212 * 0.5 = 449.4498312616531

Rating changes

Show

all results
Date Place Points Reason
2026-06-15 92 442.65 -> 449.45
2026-06-14 73 -> 92 458.59 -> 442.65
2026-06-09 75 -> 73 458.59
2026-06-08 76 -> 75 458.59
2026-06-04 77 -> 76 458.59
2026-06-02 76 -> 77 458.59
2026-05-26 77 -> 76 458.59
2026-05-14 78 -> 77 458.59
2026-05-12 79 -> 78 458.59
2026-05-07 80 -> 79 458.59

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 541 2026-02-23 35/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
2 584 2025-08-31 33/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
3 886 2025-04-26 5/36 86% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
4 169 2025-02-16 50/60 71% 3.25 RR White Wolf Cup Saint Petersburg
5 495 2024-09-01 49/96 29% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
6 682 2023-09-03 35/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
7 627 2021-11-28 29/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
8 476 2019-11-24 34/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
9 513 2019-06-02 20/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
10 256 2018-12-23 30/40 0% 2.90 RR North Cup 2018 Saint Petersburg
11 304 2018-09-23 17/24 0% 2.50 RR West cup 2018 Saint Petersburg
12 408 2018-06-11 43/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
13 516 2018-03-04 16/32 0% 2.70 RR East Cup 2018 Saint Petersburg
14 60 2017-12-11 79/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg