Dubrovin Sergey
From Saint Petersburg, Russia
EMA: 15990313
Internal rating (RR)
Rating date Feb. 1, 2020 (latest changes Feb. 1, 2020).
159 place (273.21).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.85 * 1 + 3.45 * 1) = 15.55
p1 = (290.32 * 2.70 * 0.14 + 591.55 * 3.55 * 0.43 + 391.30 * 2.50 * 0.57 + 410.26 * 2.90 * 0.86 + 0) / (2.70 * 0.14 + 3.55 * 0.43 + 2.50 * 0.57 + 2.90 * 0.86 + 1) = 379.8004823021499
p2 = (410.26 * 2.90 * 0.86 + 591.55 * 3.55 * 0.43 + 391.30 * 2.50 * 0.57 + 290.32 * 2.70 * 0.14) / max_coefficients = 166.6102893890675
score = 379.8004823021499 * 0.5 + 166.6102893890675 * 0.5 = 273.2053858456087
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2020-02-01 | 159 | 273.21 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 410 |
|
24/40 | 86% | 2.90 | RR | North Cup 2018 |
2 | 391 |
|
15/24 | 57% | 2.50 | RR | West cup 2018 |
3 | 592 |
|
30/72 | 43% | 3.55 | EMA | RCR Saint Petersburg South Cup 2018 |
4 | 290 |
|
23/32 | 14% | 2.70 | RR | East Cup 2018 |
5 | 410 |
|
50/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |
6 | 641 |
|
15/40 | 0% | 1.80 | RR | Saint Petersburg championship. West cup 2017 |
7 | 209 |
|
35/44 | 0% | 1.90 | RR | Saint Petersburg championship. South cup 2017 |
8 | 14 |
|
71/72 | 0% | 3.25 | EMA | Saint Petersburg Riichi Open 2016 |