Petrushchenko Sergey

From Moscow, Russia

EMA: 15990288

Player page

Internal rating (RR)

Rating date May 31, 2025 (latest changes May 30, 2025).

21 place (690.56).

max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266

p1 = (172.41 * 3.75 * 0.14 + 775.70 * 4 * 0.29 + 607.84 * 3.05 * 0.71 + 86.96 * 2.10 * 0.71 + 490.20 * 3.05 * 1 + 898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 709.68 * 3.10 * 1 + 523.81 * 2.60 * 1 + 764.71 * 3.05 * 1 + 372.88 * 3.25 * 1 + 677.42 * 2.40 * 1 + 514.29 * 1.90 * 1) / (3.75 * 0.14 + 4 * 0.29 + 3.05 * 0.71 + 2.10 * 0.71 + 3.05 * 1 + 3.65 * 1 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1 + 2.60 * 1 + 3.05 * 1 + 3.25 * 1 + 2.40 * 1 + 1.90 * 1) = 631.2469894864245

p2 = (898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 764.71 * 3.05 * 1) / max_coefficients = 749.8739522901191

score = 631.2469894864245 * 0.5 + 749.8739522901191 * 0.5 = 690.5604708882718

Rating changes

Show

all results
Date Place Points Reason
2025-05-30 21 688.31 -> 690.56

Seihoku spring tournament 2024: 86% -> 71%
2025-05-12 24 -> 21 672.76 -> 688.31

X Russian Championship: 100% -> 86%
2025-05-10 24 672.65 -> 672.76

Agari Spring Tournament 2024: 86% -> 71%
2025-05-03 17 -> 24 687.54 -> 672.65

SPB Riichi Open 2023: 43% -> 29%

Riichi over The Volga 2025: 0% -> 100%
2025-04-26 19 -> 17 676.87 -> 687.54

Seihoku spring tournament 2025: 0% -> 100%
2025-04-11 19 673.42 -> 676.87

Money can not buy tenpai: 29% -> 14%
2025-03-30 19 671.18 -> 673.42

Seihoku spring tournament 2024: 100% -> 86%
2025-03-10 21 -> 19 671.08 -> 671.18

Agari Spring Tournament 2024: 100% -> 86%
2025-03-03 20 -> 21 672.25 -> 671.08

SPB Riichi Open 2023: 57% -> 43%
2025-03-02 22 -> 20 670.47 -> 672.25

Riichi Maslenitsa (shrovetide): 0% -> 100%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 86 2025-05-03 65/71 100% 3.50 RR Riichi over The Volga 2025 Samara
2 514 2025-04-26 18/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
3 677 2025-03-02 11/32 100% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
4 373 2025-02-16 38/60 100% 3.25 RR White Wolf Cup Saint Petersburg
5 765 2025-02-02 13/52 100% 3.05 RR Agari Winter Tournament 2025 Moscow
6 524 2025-01-26 21/43 100% 2.60 RR Riichi On Ice Samara
7 710 2025-01-07 10/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
8 742 2024-10-13 24/90 100% 3.75 RR Moscow Riichi 2024 Moscow
9 779 2024-09-01 22/96 100% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
10 899 2024-08-04 9/80 100% 3.65 RR Riichi over Volga Samara
11 490 2024-06-09 27/52 100% 3.05 RR Agari Summer Tournament 2024 Moscow
12 234 2024-05-12 83/108 86% 4.60 RR X Russian Championship Perm
13 87 2024-03-30 43/47 71% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
14 608 2024-03-10 21/52 71% 3.05 RR Agari Spring Tournament 2024 Moscow
15 776 2023-09-03 25/108 29% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
16 172 2023-06-11 73/88 14% 3.75 RR Money can not buy tenpai Perm
17 907 2022-11-06 8/76 0% 4.20 RR IX Russian Riichi Championship Perm
18 982 2022-06-12 3/112 0% 4.05 RR Moscow Riichi 2022 Moscow
19 746 2022-03-20 18/68 0% 3.50 RR Tenpai can't buy happiness Perm
20 0 2021-12-19 48/48 0% 3.10 RR Agari team tournament Moscow
21 573 2021-11-28 33/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
22 839 2020-01-26 6/32 0% 2.70 RR The last chance: back to 2019 Moscow
23 577 2019-12-15 48/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
24 429 2019-11-24 37/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
25 968 2019-11-04 3/64 0% 3.85 EMA Aki Shanten 2019 Perm
26 909 2019-10-20 6/56 0% 3.18 EMA Tri Nitro Tournament 2019 - 7th Detonation Paris
27 478 2019-09-15 13/24 0% 2.20 EMA Valencia Riichi 2019 Valencia
28 629 2019-07-21 14/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
29 77 2019-06-02 37/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
30 60 2019-05-04 79/84 0% 4.20 EMA Haru Shanten 2019 Perm
31 617 2019-01-13 19/48 0% 3.10 RR Agari team tournament 2019 Moscow
32 821 2018-12-23 8/40 0% 2.90 RR North Cup 2018 Saint Petersburg
33 508 2018-12-16 32/64 0% 3.45 EMA White Dragon Tournament Moscow
34 835 2018-11-18 16/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
35 957 2018-09-16 3/48 0% 2.80 EMA 1st Spanish Riichi Open 2018 Valencia
36 149 2018-08-19 41/48 0% 3.10 RR Moscow Riichi Open 2018 Moscow
37 926 2018-07-15 3/28 0% 3.00 RR Moscow Open Riichi Marathon Moscow
38 613 2018-06-17 13/32 0% 2.85 EMA 5th Prague Open Riichi Championship 2018 Prague
39 859 2018-06-11 11/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
40 859 2018-05-01 11/72 0% 3.85 EMA Haru Shanten 2018 Perm
41 340 2018-03-25 32/48 0% 2.80 EMA Great Wave 2018 Helsinki
42 687 2017-12-11 27/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg
43 845 2017-11-12 12/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
44 48 2017-10-22 61/64 0% 3.45 EMA Moscow Riichi Open 2017 Moscow
45 111 2017-09-24 25/28 0% 2.60 RR Moscow Riichi Half Marathon 2017 Moscow
46 407 2017-09-03 17/28 0% 2.30 EMA Riichi Open Bratislava 2017 Bratislava
47 57 2017-07-09 34/36 0% 3.20 RR Moscow Open Riichi Marathon 2017 Moscow
48 913 2017-06-04 3/24 0% 2.90 EMA Prague Open 2017 Prague
49 282 2017-03-11 29/40 0% 2.00 RR Moscow championship 2017 (JPML-A rules) Moscow
50 733 2017-02-12 5/16 0% 2.30 RR February mini-tournament glhf; 2017 Moscow
51 391 2016-12-10 15/24 0% 1.60 RR December tournament glhf; 2016 Moscow
52 507 2016-12-04 36/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016 Saint Petersburg
53 194 2016-10-16 26/32 0% 1.60 RR Tournament of 4 winds. West cup 2016 Saint Petersburg
54 103 2016-09-11 79/88 0% 3.45 EMA V Russian Riichi Championship 2016 Moscow
55 263 2016-08-27 15/20 0% 1.50 RR August tournament glhf; 2016 Moscow
56 0 2016-05-28 24/24 0% 1.60 RR May tournament glhf; 2016 Moscow