Maniakhin Petr

From Saint Petersburg, Russia

EMA: 15990315

Player page

Internal rating (RR)

Rating date Jan. 16, 2026 (latest changes Jan. 14, 2026).

99 place (404.74).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95

p1 = (494.74 * 3.85 * 0.57 + 169.49 * 3.25 * 1 + 885.71 * 1.90 * 1 + 584.42 * 3.45 * 1 + 0) / (3.85 * 0.57 + 3.25 * 1 + 1.90 * 1 + 3.45 * 1 + 1) = 452.40336986192233

p2 = (584.42 * 3.45 * 1 + 885.71 * 1.90 * 1 + 494.74 * 3.85 * 0.57 + 169.49 * 3.25 * 1) / max_coefficients = 357.0775919732442

score = 452.40336986192233 * 0.5 + 357.0775919732442 * 0.5 = 404.7404809175832

Rating changes

Show

all results
Date Place Points Reason
2026-01-12 102 -> 99 404.74
2026-01-07 99 -> 102 404.74
2026-01-01 100 -> 99 414.79 -> 404.74

SPB Riichi Open 2024: 71% -> 57%
2025-12-07 99 -> 100 414.79
2025-12-04 100 -> 99 414.79
2025-11-30 99 -> 100 414.79
2025-11-14 100 -> 99 414.79
2025-11-12 102 -> 100 414.79
2025-11-04 96 -> 102 423.32 -> 414.79
2025-11-01 92 -> 96 432.97 -> 423.32

SPB Riichi Open 2024: 86% -> 71%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 584 2025-08-31 33/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
2 886 2025-04-26 5/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
3 169 2025-02-16 50/60 100% 3.25 RR White Wolf Cup Saint Petersburg
4 495 2024-09-01 49/96 57% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
5 682 2023-09-03 35/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
6 627 2021-11-28 29/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
7 476 2019-11-24 34/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
8 513 2019-06-02 20/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
9 256 2018-12-23 30/40 0% 2.90 RR North Cup 2018 Saint Petersburg
10 304 2018-09-23 17/24 0% 2.50 RR West cup 2018 Saint Petersburg
11 408 2018-06-11 43/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
12 516 2018-03-04 16/32 0% 2.70 RR East Cup 2018 Saint Petersburg
13 60 2017-12-11 79/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg