Petrushchenko Sergey

From Moscow, Russia

EMA: 15990288

Player page

Internal rating (RR)

Rating date Sept. 10, 2026 (latest changes Sept. 7, 2026).

52 place (593.41).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41

p1 = (741.57 * 3.75 * 0.14 + 709.68 * 3.10 * 0.29 + 523.81 * 2.60 * 0.43 + 764.71 * 3.05 * 0.43 + 372.88 * 3.25 * 0.43 + 677.42 * 2.40 * 0.43 + 514.29 * 1.90 * 0.57 + 85.71 * 3.50 * 0.57 + 866.67 * 2 * 0.71 + 200 * 2.45 * 0.86 + 789.47 * 2.25 * 1 + 454.55 * 3 * 1 + 260 * 3.10 * 1 + 452.38 * 2.90 * 1 + 706.29 * 4.71 * 1 + 745.76 * 3.40 * 1 + 647.89 * 3.40 * 1) / (3.75 * 0.14 + 3.10 * 0.29 + 2.60 * 0.43 + 3.05 * 0.43 + 3.25 * 0.43 + 2.40 * 0.43 + 1.90 * 0.57 + 3.50 * 0.57 + 2 * 0.71 + 2.45 * 0.86 + 2.25 * 1 + 3 * 1 + 3.10 * 1 + 2.90 * 1 + 4.71 * 1 + 3.40 * 1 + 3.40 * 1) = 548.1750497632073

p2 = (706.29 * 4.71 * 1 + 745.76 * 3.40 * 1 + 647.89 * 3.40 * 1 + 789.47 * 2.25 * 1) / max_coefficients = 638.635301752109

score = 548.1750497632073 * 0.5 + 638.635301752109 * 0.5 = 593.4051757576581

Rating changes

Show

all results
Date Place Points Reason
2026-09-07 51 -> 52 594.40 -> 593.41

Moscow Open Riichi Marathon: 43% -> 29%
2026-09-06 62 -> 51 547.86 -> 594.40

Sunset Wolf Cup 2026: 0% -> 100%
2026-09-03 65 -> 62 544.91 -> 547.86

Riichi over The Volga 2025: 71% -> 57%
2026-09-02 64 -> 65 545.72 -> 544.91

Riichi Maslenitsa (shrovetide): 57% -> 43%
2026-09-01 60 -> 64 563.16 -> 545.72

SPB Riichi Open 2024: 14% -> 0%
2026-08-31 61 -> 60 562.21 -> 563.16

SPB Riichi Open 2025: 100% -> 86%
2026-08-26 60 -> 61 562.10 -> 562.21

Seihoku spring tournament 2025: 71% -> 57%
2026-08-16 80 -> 60 494.68 -> 562.10

Ufa Championship 2026: 0% -> 100%

White Wolf Cup: 57% -> 43%
2026-08-15 82 -> 80 490.39 -> 494.68

13 bloody tiles: 86% -> 71%
2026-08-13 82 492.36 -> 490.39

Moscow Riichi 2024: 29% -> 14%

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 648 2026-09-06 26/72 100% 3.40 RR Sunset Wolf Cup 2026 Saint Petersburg
2 746 2026-08-16 16/60 100% 3.40 RR Ufa Championship 2026 Ufa
3 706 2026-06-14 43/144 100% 4.71 RR XII Russian Championship Samara
4 452 2026-05-03 24/43 100% 2.90 RR Sturgeon in tempai Saratov
5 260 2026-04-05 38/51 100% 3.10 RR Moscow Riichi 2026 Moscow
6 122 2026-02-23 66/75 100% 3.40 RR White Wolf Cup 2026 Saint Petersburg
7 455 2026-01-25 31/56 100% 3.00 RR Riichi On Ice 2026 Samara
8 789 2025-12-07 5/20 100% 2.25 RR Winter Hatiko Korolyov
9 117 2025-08-31 69/78 86% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
10 200 2025-07-13 25/31 86% 2.45 RR Agari Summer Tournament 2025 Moscow
11 194 2025-06-15 55/68 71% 4.10 RR 13 bloody tiles Perm
12 867 2025-06-08 🥉 3/16 71% 2.00 RR Random not fault Moscow
13 86 2025-05-03 65/71 57% 3.50 RR Riichi over The Volga 2025 Samara
14 514 2025-04-26 18/36 57% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
15 677 2025-03-02 11/32 43% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
16 373 2025-02-16 38/60 43% 3.25 RR White Wolf Cup Saint Petersburg
17 765 2025-02-02 13/52 43% 3.05 RR Agari Winter Tournament 2025 Moscow
18 524 2025-01-26 21/43 43% 2.60 RR Riichi On Ice Samara
19 710 2025-01-07 10/32 29% 3.10 RR Moscow Open Riichi Marathon Moscow
20 742 2024-10-13 24/90 14% 3.75 RR Moscow Riichi 2024 Moscow
21 779 2024-09-01 22/96 0% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
22 899 2024-08-04 9/80 0% 3.65 RR Riichi over Volga Samara
23 490 2024-06-09 27/52 0% 3.05 RR Agari Summer Tournament 2024 Moscow
24 234 2024-05-12 83/108 0% 4.60 RR X Russian Championship Perm
25 87 2024-03-30 43/47 0% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
26 608 2024-03-10 21/52 0% 3.05 RR Agari Spring Tournament 2024 Moscow
27 776 2023-09-03 25/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
28 172 2023-06-11 73/88 0% 3.75 RR Money can not buy tenpai Perm
29 907 2022-11-06 8/76 0% 4.20 RR IX Russian Riichi Championship Perm
30 982 2022-06-12 🥉 3/112 0% 4.05 RR Moscow Riichi 2022 Moscow
31 742 2022-03-20 18/67 0% 3.45 RR Tenpai can't buy happiness Perm
32 0 2021-12-19 48/48 0% 3.10 RR Agari team tournament Moscow
33 573 2021-11-28 33/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
34 839 2020-01-26 6/32 0% 2.70 RR The last chance: back to 2019 Moscow
35 577 2019-12-15 48/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
36 429 2019-11-24 37/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
37 968 2019-11-04 🥉 3/64 0% 3.85 EMA Aki Shanten 2019 Perm
38 909 2019-10-20 6/56 0% 3.18 EMA Tri Nitro Tournament 2019 - 7th Detonation Paris
39 478 2019-09-15 13/24 0% 2.20 EMA Valencia Riichi 2019 Valencia
40 629 2019-07-21 14/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
41 77 2019-06-02 37/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
42 60 2019-05-04 79/84 0% 4.20 EMA Haru Shanten 2019 Perm
43 617 2019-01-13 19/48 0% 3.10 RR Agari team tournament 2019 Moscow
44 821 2018-12-23 8/40 0% 2.90 RR North Cup 2018 Saint Petersburg
45 508 2018-12-16 32/64 0% 3.45 EMA White Dragon Tournament Moscow
46 835 2018-11-18 16/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
47 957 2018-09-16 🥉 3/48 0% 2.80 EMA 1st Spanish Riichi Open 2018 Valencia
48 149 2018-08-19 41/48 0% 3.10 RR Moscow Riichi Open 2018 Moscow
49 926 2018-07-15 🥉 3/28 0% 3.00 RR Moscow Open Riichi Marathon Moscow
50 613 2018-06-17 13/32 0% 2.85 EMA 5th Prague Open Riichi Championship 2018 Prague
51 859 2018-06-11 11/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
52 859 2018-05-01 11/72 0% 3.85 EMA Haru Shanten 2018 Perm
53 340 2018-03-25 32/48 0% 2.80 EMA Great Wave 2018 Helsinki
54 687 2017-12-11 27/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg
55 845 2017-11-12 12/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
56 48 2017-10-22 61/64 0% 3.45 EMA Moscow Riichi Open 2017 Moscow
57 111 2017-09-24 25/28 0% 2.60 RR Moscow Riichi Half Marathon 2017 Moscow
58 407 2017-09-03 17/28 0% 2.30 EMA Riichi Open Bratislava 2017 Bratislava
59 57 2017-07-09 34/36 0% 3.20 RR Moscow Open Riichi Marathon 2017 Moscow
60 913 2017-06-04 🥉 3/24 0% 2.90 EMA Prague Open 2017 Prague
61 282 2017-03-11 29/40 0% 2.00 RR Moscow championship 2017 (JPML-A rules) Moscow
62 733 2017-02-12 5/16 0% 2.30 RR February mini-tournament glhf; 2017 Moscow
63 391 2016-12-10 15/24 0% 1.60 RR December tournament glhf; 2016 Moscow
64 507 2016-12-04 36/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016 Saint Petersburg
65 194 2016-10-16 26/32 0% 1.60 RR Tournament of 4 winds. West cup 2016 Saint Petersburg
66 103 2016-09-11 79/88 0% 3.45 EMA V Russian Riichi Championship 2016 Moscow
67 263 2016-08-27 15/20 0% 1.50 RR August tournament glhf; 2016 Moscow
68 0 2016-05-28 24/24 0% 1.60 RR May tournament glhf; 2016 Moscow