Sychev Ivan
From Saint Petersburg, Russia
EMA: 15990298
Common russian riichi rating (CRR)
Rating date Sept. 20, 2023 (latest changes Sept. 20, 2023).
54 place (430.96).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (739.13 * 1.40 * 1 + 897.20 * 4 * 1 + 0 + 0 + 0) / (1.40 * 1 + 4 * 1 + 1 + 1 + 1) = 550.425
p2 = (897.20 * 4 * 1 + 739.13 * 1.40 * 1) / max_coefficients = 311.5001332285471
score = 550.425 * 0.5 + 311.5001332285471 * 0.5 = 430.96256661427356
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-09-20 | 52 -> 54 | 430.96 | |
2023-09-06 | 54 -> 52 | 430.96 | |
2023-09-03 | 45 -> 54 | 457.28 -> 430.96 |
SPB Riichi Open 2023: 0% -> 100% |
2021-02-01 | 30 -> 45 | 646.36 -> 457.28 | |
2020-02-01 | 30 | 646.36 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 897 |
|
12/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
2 | 739 |
|
7/24 | 100% | 1.40 | CRR | Fire cup 2023 |
3 | 856 |
|
17/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship |
4 | 667 |
|
22/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 |
5 | 615 |
|
16/40 | 0% | 2.90 | RR | North Cup 2018 |
6 | 565 |
|
11/24 | 0% | 2.50 | RR | West cup 2018 |
7 | 958 |
|
4/72 | 0% | 3.55 | EMA | RCR Saint Petersburg South Cup 2018 |
8 | 419 |
|
19/32 | 0% | 2.70 | RR | East Cup 2018 |
9 | 940 |
|
6/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |
10 | 821 |
|
8/40 | 0% | 1.80 | RR | Saint Petersburg championship. Northern cup 2017 |
11 | 103 |
|
36/40 | 0% | 1.80 | RR | Saint Petersburg championship. West cup 2017 |
12 | 744 |
|
12/44 | 0% | 1.90 | RR | Saint Petersburg championship. South cup 2017 |
13 | 620 |
|
28/72 | 0% | 3.25 | EMA | Saint Petersburg Riichi Open 2016 |
14 | 613 |
|
13/32 | 0% | 1.60 | RR | Tournament of 4 winds. West cup 2016 |