Petrushchenko Sergey
From Moscow, Russia
EMA: 15990288
Common russian riichi rating (CRR)
Rating date Jan. 14, 2025 (latest changes Jan. 14, 2025).
18 place (660.52).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (172.41 * 3.75 * 0.43 + 775.70 * 4 * 0.57 + 871.79 * 2.90 * 0.86 + 607.84 * 3.05 * 1 + 86.96 * 2.10 * 1 + 490.20 * 3.05 * 1 + 898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 130.43 * 2.80 * 1 + 709.68 * 3.10 * 1) / (3.75 * 0.43 + 4 * 0.57 + 2.90 * 0.86 + 3.05 * 1 + 2.10 * 1 + 3.05 * 1 + 3.65 * 1 + 3.85 * 1 + 3.75 * 1 + 2.80 * 1 + 3.10 * 1) = 610.6209444901799
p2 = (898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 709.68 * 3.10 * 1) / max_coefficients = 710.4246056782334
score = 610.6209444901799 * 0.5 + 710.4246056782334 * 0.5 = 660.5227750842066
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-07 | 20 -> 18 | 654.12 -> 660.52 |
Moscow Open Riichi Marathon: 0% -> 100% |
| 2025-01-05 | 21 -> 20 | 654.12 | |
| 2025-01-03 | 20 -> 21 | 657.40 -> 654.12 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-18 | 20 | 658.31 -> 657.40 |
Meeting in the billiard room: 14% -> 0% |
| 2024-12-11 | 22 -> 20 | 654.47 -> 658.31 |
Money can not buy tenpai: 57% -> 43% |
| 2024-12-01 | 18 -> 22 | 678.39 -> 654.47 |
Riichi never changing: 0% -> 100% |
| 2024-11-26 | 17 -> 18 | 689.92 -> 678.39 |
Autumn Agari tournament: 100% -> 86% |
| 2024-11-05 | 17 | 692.65 -> 689.92 | |
| 2024-11-03 | 16 -> 17 | 697.99 -> 692.65 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-18 | 16 | 698.55 -> 697.99 |
Meeting in the billiard room: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 710 |
|
10/32 | 100% | 3.10 | RR | Moscow Open Riichi Marathon |
| 2 | 130 |
|
21/24 | 100% | 2.80 | CRR | Riichi never changing |
| 3 | 742 |
|
24/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 4 | 779 |
|
22/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 5 | 899 |
|
9/80 | 100% | 3.65 | RR | Riichi over Volga |
| 6 | 490 |
|
27/52 | 100% | 3.05 | RR | Agari Summer Tournament 2024 |
| 7 | 234 |
|
83/108 | 100% | 4.60 | RR | X Russian Championship |
| 8 | 87 |
|
43/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 9 | 608 |
|
21/52 | 100% | 3.05 | RR | Agari Spring Tournament 2024 |
| 10 | 872 |
|
6/40 | 86% | 2.90 | CRR | Autumn Agari tournament |
| 11 | 776 |
|
25/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |
| 12 | 172 |
|
73/88 | 43% | 3.75 | RR | Money can not buy tenpai |
| 13 | 739 |
|
7/24 | 0% | 2.80 | CRR | Meeting in the billiard room |
| 14 | 907 |
|
8/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
| 15 | 982 |
|
3/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |
| 16 | 746 |
|
18/68 | 0% | 3.50 | RR | Tenpai can't buy happiness |
| 17 | 0 |
|
48/48 | 0% | 3.10 | RR | Agari team tournament |
| 18 | 573 |
|
33/76 | 0% | 3.45 | RR | Saint Petersburg Open 2021 |
| 19 | 737 |
|
6/20 | 0% | 2.40 | CRR | double-burning-2020 |
| 20 | 839 |
|
6/32 | 0% | 2.70 | RR | The last chance: back to 2019 |
| 21 | 577 |
|
48/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship |
| 22 | 429 |
|
37/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 |
| 23 | 968 |
|
3/64 | 0% | 3.85 | EMA | Aki Shanten 2019 |
| 24 | 909 |
|
6/56 | 0% | 3.18 | EMA | Tri Nitro Tournament 2019 - 7th Detonation |
| 25 | 478 |
|
13/24 | 0% | 2.20 | EMA | Valencia Riichi 2019 |
| 26 | 629 |
|
14/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2019 |
| 27 | 77 |
|
37/40 | 0% | 2.90 | RR | Summer Cup 2019 |
| 28 | 60 |
|
79/84 | 0% | 4.20 | EMA | Haru Shanten 2019 |
| 29 | 67 |
|
15/16 | 0% | 2.60 | CRR | Double burning |
| 30 | 617 |
|
19/48 | 0% | 3.10 | RR | Agari team tournament 2019 |
| 31 | 821 |
|
8/40 | 0% | 2.90 | RR | North Cup 2018 |
| 32 | 508 |
|
32/64 | 0% | 3.45 | EMA | White Dragon Tournament |
| 33 | 835 |
|
16/92 | 0% | 3.80 | EMA | VII Russian Riichi Championship "Aki Shanten" |
| 34 | 957 |
|
3/48 | 0% | 2.80 | EMA | 1st Spanish Riichi Open 2018 |
| 35 | 149 |
|
41/48 | 0% | 3.10 | RR | Moscow Riichi Open 2018 |
| 36 | 926 |
|
3/28 | 0% | 3.00 | RR | Moscow Open Riichi Marathon |
| 37 | 613 |
|
13/32 | 0% | 2.85 | EMA | 5th Prague Open Riichi Championship 2018 |
| 38 | 859 |
|
11/72 | 0% | 3.55 | EMA | RCR Saint Petersburg South Cup 2018 |
| 39 | 333 |
|
19/28 | 0% | 3.50 | CRR | A-League |
| 40 | 421 |
|
12/20 | 0% | 1.50 | CRR | Agari tournament. First stage |
| 41 | 859 |
|
11/72 | 0% | 3.85 | EMA | Haru Shanten 2018 |
| 42 | 340 |
|
32/48 | 0% | 2.80 | EMA | Great Wave 2018 |
| 43 | 0 |
|
28/28 | 0% | 1.70 | CRR | Team tournament Agari. Season event |
| 44 | 687 |
|
27/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |
| 45 | 845 |
|
12/72 | 0% | 3.25 | EMA | Perm Riichi 2017 Aki Shanten |
| 46 | 48 |
|
61/64 | 0% | 3.45 | EMA | Moscow Riichi Open 2017 |
| 47 | 111 |
|
25/28 | 0% | 2.60 | RR | Moscow Riichi Half Marathon 2017 |
| 48 | 407 |
|
17/28 | 0% | 2.30 | EMA | Riichi Open Bratislava 2017 |
| 49 | 57 |
|
34/36 | 0% | 3.20 | RR | Moscow Open Riichi Marathon 2017 |
| 50 | 913 |
|
3/24 | 0% | 2.90 | EMA | Prague Open 2017 |
| 51 | 282 |
|
29/40 | 0% | 2.00 | RR | Moscow championship 2017 (JPML-A rules) |
| 52 | 733 |
|
5/16 | 0% | 2.30 | RR | February mini-tournament glhf; 2017 |
| 53 | 391 |
|
15/24 | 0% | 1.60 | RR | December tournament glhf; 2016 |
| 54 | 507 |
|
36/72 | 0% | 3.25 | EMA | Saint Petersburg Riichi Open 2016 |
| 55 | 194 |
|
26/32 | 0% | 1.60 | RR | Tournament of 4 winds. West cup 2016 |
| 56 | 103 |
|
79/88 | 0% | 3.45 | EMA | V Russian Riichi Championship 2016 |
| 57 | 263 |
|
15/20 | 0% | 1.50 | RR | August tournament glhf; 2016 |
| 58 | 0 |
|
24/24 | 0% | 1.60 | RR | May tournament glhf; 2016 |