Petrushchenko Sergey

From Moscow, Russia

EMA: 15990288

Player page

Internal rating (RR)

Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).

41 place (586.00).

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

p1 = (607.84 * 3.05 * 0.29 + 86.96 * 2.10 * 0.29 + 233.64 * 4.60 * 0.43 + 490.20 * 3.05 * 0.43 + 898.73 * 3.65 * 0.57 + 778.95 * 3.85 * 0.71 + 741.57 * 3.75 * 0.86 + 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 + 866.67 * 2 * 1 + 194.03 * 4.10 * 1 + 200 * 2.45 * 1 + 789.47 * 2.25 * 1) / (3.05 * 0.29 + 2.10 * 0.29 + 4.60 * 0.43 + 3.05 * 0.43 + 3.65 * 0.57 + 3.85 * 0.71 + 3.75 * 0.86 + 3.10 * 1 + 2.60 * 1 + 3.05 * 1 + 3.25 * 1 + 2.40 * 1 + 1.90 * 1 + 2 * 1 + 4.10 * 1 + 2.45 * 1 + 2.25 * 1) = 566.1056841320668

p2 = (741.57 * 3.75 * 0.86 + 764.71 * 3.05 * 1 + 709.68 * 3.10 * 1 + 778.95 * 3.85 * 0.71) / max_coefficients = 605.8869565217392

score = 566.1056841320668 * 0.5 + 605.8869565217392 * 0.5 = 585.9963203269031

Rating changes

Show

all results
Date Place Points Reason
2025-12-09 41 585.59 -> 586.00

Agari Summer Tournament 2024: 57% -> 43%
2025-12-07 42 -> 41 578.96 -> 585.59

Winter Hatiko: 0% -> 100%
2025-12-04 42 588.03 -> 578.96

Riichi over Volga: 71% -> 57%
2025-11-30 43 -> 42 586.22 -> 588.03

Seihoku spring tournament 2024: 43% -> 29%
2025-11-14 44 -> 43 586.22
2025-11-12 44 583.57 -> 586.22

X Russian Championship: 57% -> 43%
2025-11-10 44 583.89 -> 583.57

Agari Spring Tournament 2024: 43% -> 29%
2025-11-04 42 -> 44 597.97 -> 583.89
2025-11-01 39 -> 42 611.31 -> 597.97

SPB Riichi Open 2024: 86% -> 71%
2025-10-13 37 -> 39 615.77 -> 611.31

Moscow Riichi 2024: 100% -> 86%

Tournaments

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