Petrushchenko Sergey

From Moscow, Russia

EMA: 15990288

Player page

Common russian riichi rating (CRR)

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

43 place (592.28).

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 + 130.43 * 2.80 * 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 + 578.95 * 1.50 * 1 + 866.67 * 2 * 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 + 2.80 * 0.86 + 3.10 * 1 + 2.60 * 1 + 3.05 * 1 + 3.25 * 1 + 2.40 * 1 + 1.90 * 1 + 1.50 * 1 + 2 * 1 + 2.45 * 1 + 2.25 * 1) = 578.6805303752675

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 = 578.6805303752675 * 0.5 + 605.8869565217392 * 0.5 = 592.2837434485034

Rating changes

Show

all results
Date Place Points Reason
2025-12-09 43 591.80 -> 592.28

Agari Summer Tournament 2024: 57% -> 43%
2025-12-07 43 585.52 -> 591.80

Winter Hatiko: 0% -> 100%
2025-12-04 42 -> 43 594.50 -> 585.52

Riichi over Volga: 71% -> 57%
2025-12-01 42 592.24 -> 594.50

Riichi never changing: 100% -> 86%
2025-11-30 42 590.41 -> 592.24

Seihoku spring tournament 2024: 43% -> 29%
2025-11-25 43 -> 42 592.03 -> 590.41
2025-11-15 44 -> 43 592.03
2025-11-14 45 -> 44 592.03
2025-11-12 47 -> 45 589.33 -> 592.03

X Russian Championship: 57% -> 43%
2025-11-10 47 589.59 -> 589.33

Agari Spring Tournament 2024: 43% -> 29%

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
6 579 2025-05-17 9/20 100% 1.50 CRR HaTiKo Korolyov
7 86 2025-05-03 65/71 100% 3.50 RR Riichi over The Volga 2025 Samara
8 514 2025-04-26 18/36 100% 1.90 RR Seihoku spring tournament 2025 Saint Petersburg
9 677 2025-03-02 11/32 100% 2.40 RR Riichi Maslenitsa (shrovetide) Yekaterinburg
10 373 2025-02-16 38/60 100% 3.25 RR White Wolf Cup Saint Petersburg
11 765 2025-02-02 13/52 100% 3.05 RR Agari Winter Tournament 2025 Moscow
12 524 2025-01-26 21/43 100% 2.60 RR Riichi On Ice Samara
13 710 2025-01-07 10/32 100% 3.10 RR Moscow Open Riichi Marathon Moscow
14 130 2024-12-01 21/24 86% 2.80 CRR Riichi never changing Moscow
15 742 2024-10-13 24/90 86% 3.75 RR Moscow Riichi 2024 Moscow
16 779 2024-09-01 22/96 71% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
17 899 2024-08-04 9/80 57% 3.65 RR Riichi over Volga Samara
18 490 2024-06-09 27/52 43% 3.05 RR Agari Summer Tournament 2024 Moscow
19 234 2024-05-12 83/108 43% 4.60 RR X Russian Championship Perm
20 87 2024-03-30 43/47 29% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
21 608 2024-03-10 21/52 29% 3.05 RR Agari Spring Tournament 2024 Moscow
22 872 2023-11-26 6/40 0% 2.90 CRR Autumn Agari tournament Moscow
23 776 2023-09-03 25/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
24 172 2023-06-11 73/88 0% 3.75 RR Money can not buy tenpai Perm
25 739 2022-12-18 7/24 0% 2.80 CRR Meeting in the billiard room Moscow
26 907 2022-11-06 8/76 0% 4.20 RR IX Russian Riichi Championship Perm
27 982 2022-06-12 🥉 3/112 0% 4.05 RR Moscow Riichi 2022 Moscow
28 746 2022-03-20 18/68 0% 3.50 RR Tenpai can't buy happiness Perm
29 0 2021-12-19 48/48 0% 3.10 RR Agari team tournament Moscow
30 573 2021-11-28 33/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
31 737 2020-02-02 6/20 0% 2.40 CRR double-burning-2020 Moscow
32 839 2020-01-26 6/32 0% 2.70 RR The last chance: back to 2019 Moscow
33 577 2019-12-15 48/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
34 429 2019-11-24 37/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
35 968 2019-11-04 🥉 3/64 0% 3.85 EMA Aki Shanten 2019 Perm
36 909 2019-10-20 6/56 0% 3.18 EMA Tri Nitro Tournament 2019 - 7th Detonation Paris
37 478 2019-09-15 13/24 0% 2.20 EMA Valencia Riichi 2019 Valencia
38 629 2019-07-21 14/36 0% 3.20 RR Moscow Open Riichi Marathon 2019 Moscow
39 77 2019-06-02 37/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
40 60 2019-05-04 79/84 0% 4.20 EMA Haru Shanten 2019 Perm
41 67 2019-03-24 15/16 0% 2.60 CRR Double burning Moscow
42 617 2019-01-13 19/48 0% 3.10 RR Agari team tournament 2019 Moscow
43 821 2018-12-23 8/40 0% 2.90 RR North Cup 2018 Saint Petersburg
44 508 2018-12-16 32/64 0% 3.45 EMA White Dragon Tournament Moscow
45 835 2018-11-18 16/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten" Perm
46 957 2018-09-16 🥉 3/48 0% 2.80 EMA 1st Spanish Riichi Open 2018 Valencia
47 149 2018-08-19 41/48 0% 3.10 RR Moscow Riichi Open 2018 Moscow
48 926 2018-07-15 🥉 3/28 0% 3.00 RR Moscow Open Riichi Marathon Moscow
49 613 2018-06-17 13/32 0% 2.85 EMA 5th Prague Open Riichi Championship 2018 Prague
50 859 2018-06-11 11/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018 Saint Petersburg
51 333 2018-05-20 19/28 0% 3.50 CRR A-League Moscow
52 421 2018-05-12 12/20 0% 1.50 CRR Agari tournament. First stage Moscow
53 859 2018-05-01 11/72 0% 3.85 EMA Haru Shanten 2018 Perm
54 340 2018-03-25 32/48 0% 2.80 EMA Great Wave 2018 Helsinki
55 0 2018-01-20 28/28 0% 1.70 CRR Team tournament Agari. Season event Moscow
56 687 2017-12-11 27/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg
57 845 2017-11-12 12/72 0% 3.25 EMA Perm Riichi 2017 Aki Shanten Perm
58 48 2017-10-22 61/64 0% 3.45 EMA Moscow Riichi Open 2017 Moscow
59 111 2017-09-24 25/28 0% 2.60 RR Moscow Riichi Half Marathon 2017 Moscow
60 407 2017-09-03 17/28 0% 2.30 EMA Riichi Open Bratislava 2017 Bratislava
61 57 2017-07-09 34/36 0% 3.20 RR Moscow Open Riichi Marathon 2017 Moscow
62 913 2017-06-04 🥉 3/24 0% 2.90 EMA Prague Open 2017 Prague
63 282 2017-03-11 29/40 0% 2.00 RR Moscow championship 2017 (JPML-A rules) Moscow
64 733 2017-02-12 5/16 0% 2.30 RR February mini-tournament glhf; 2017 Moscow
65 391 2016-12-10 15/24 0% 1.60 RR December tournament glhf; 2016 Moscow
66 507 2016-12-04 36/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016 Saint Petersburg
67 194 2016-10-16 26/32 0% 1.60 RR Tournament of 4 winds. West cup 2016 Saint Petersburg
68 103 2016-09-11 79/88 0% 3.45 EMA V Russian Riichi Championship 2016 Moscow
69 263 2016-08-27 15/20 0% 1.50 RR August tournament glhf; 2016 Moscow
70 0 2016-05-28 24/24 0% 1.60 RR May tournament glhf; 2016 Moscow