Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

Rating date Aug. 16, 2026 (latest changes Aug. 16, 2026).

92 place (446.43).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 15.459999999999999

p1 = (494.74 * 3.85 * 0.14 + 169.49 * 3.25 * 0.43 + 885.71 * 1.90 * 0.71 + 584.42 * 3.45 * 1 + 540.54 * 3.40 * 1) / (3.85 * 0.14 + 3.25 * 0.43 + 1.90 * 0.71 + 3.45 * 1 + 3.40 * 1) = 548.2023411165302

p2 = (584.42 * 3.45 * 1 + 540.54 * 3.40 * 1 + 885.71 * 1.90 * 0.71 + 494.74 * 3.85 * 0.14) / max_coefficients = 344.65200517464416

score = 548.2023411165302 * 0.5 + 344.65200517464416 * 0.5 = 446.4271731455872

Rating changes

Show

all results
Date Place Points Reason
2026-08-16 93 -> 92 439.52 -> 446.43

White Wolf Cup: 57% -> 43%
2026-08-15 94 -> 93 438.25 -> 439.52
2026-08-13 95 -> 94 438.25
2026-08-03 96 -> 95 438.25
2026-07-25 94 -> 96 438.25
2026-07-18 93 -> 94 438.25
2026-07-12 92 -> 93 438.25
2026-07-07 93 -> 92 438.25
2026-07-03 94 -> 93 438.25
2026-07-02 95 -> 94 438.25

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 71% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
4 169 2025-02-16 50/60 43% 3.25 RR White Wolf Cup Saint Petersburg
5 495 2024-09-01 49/96 14% 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