Sychev Ivan
From Saint Petersburg, Russia
EMA: 15990298
Common russian riichi rating (CRR)
Rating date Dec. 1, 2024 (latest changes Dec. 1, 2024).
122 place (327.70).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (739.13 * 1.40 * 0.43 + 897.20 * 4 * 0.71 + 0 + 0 + 0) / (1.40 * 0.43 + 4 * 0.71 + 1 + 1 + 1) = 465.6757376216463
p2 = (897.20 * 4 * 0.71 + 739.13 * 1.40 * 0.43) / max_coefficients = 189.7148264984227
score = 465.6757376216463 * 0.5 + 189.7148264984227 * 0.5 = 327.6952820600345
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2024-12-01 | 121 -> 122 | 327.70 | |
2024-11-05 | 124 -> 121 | 327.70 | |
2024-11-03 | 117 -> 124 | 361.40 -> 327.70 |
SPB Riichi Open 2023: 86% -> 71% |
2024-10-25 | 118 -> 117 | 361.40 | |
2024-10-22 | 116 -> 118 | 369.35 -> 361.40 |
Fire cup 2023: 57% -> 43% |
2024-10-13 | 107 -> 116 | 371.75 -> 369.35 | |
2024-10-11 | 108 -> 107 | 371.75 | |
2024-09-15 | 105 -> 108 | 371.75 | |
2024-09-06 | 106 -> 105 | 371.75 | |
2024-09-03 | 96 -> 106 | 397.77 -> 371.75 |
SPB Riichi Open 2023: 100% -> 86% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 897 |
|
12/108 | 71% | 4.00 | RR | SPB Riichi Open 2023 |
2 | 739 |
|
7/24 | 43% | 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 |