Dubrovin Sergey

From Saint Petersburg, Russia

EMA: 15990313

Player page

Internal rating (RR)

Rating date May 24, 2022 (latest changes April 30, 2022).

223 place (73.45).

max_coefficients = (4.05 * 1 + 3.85 * 1 + 3.50 * 1 + 3.45 * 1) = 14.850000000000001

p1 = (391.30 * 2.50 * 0.14 + 410.26 * 2.90 * 0.29 + 0 + 0 + 0) / (2.50 * 0.14 + 2.90 * 0.29 + 1 + 1 + 1) = 114.60229634620072

p2 = (410.26 * 2.90 * 0.29 + 391.30 * 2.50 * 0.14) / max_coefficients = 32.303030303030305

score = 114.60229634620072 * 0.5 + 32.303030303030305 * 0.5 = 73.45266332461551

Rating changes

Show

Date Place Points Reason
2022-04-30 225 -> 223 92.49 -> 73.45

North Cup 2018: 43% -> 29%

2022-03-30 222 -> 225 106.20 -> 92.49

West cup 2018: 29% -> 14%

2022-03-20 212 -> 222 106.29 -> 106.20
2022-02-28 210 -> 212 121.38 -> 106.29

North Cup 2018: 57% -> 43%

2022-01-30 196 -> 210 180.41 -> 121.38

West cup 2018: 43% -> 29%

RCR Saint Petersburg South Cup 2018: 14% -> 0%

2021-12-30 196 189.32 -> 180.41

North Cup 2018: 71% -> 57%

2021-12-19 195 -> 196 189.32
2021-11-30 183 -> 195 218.78 -> 189.32

RCR Saint Petersburg South Cup 2018: 29% -> 14%

West cup 2018: 57% -> 43%

2021-11-28 177 -> 183 218.78
2021-11-06 174 -> 177 218.78

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 410 2018-12-23 24/40 29% 2.90 RR North Cup 2018
2 391 2018-09-23 15/24 14% 2.50 RR West cup 2018
3 592 2018-06-11 30/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
4 290 2018-03-04 23/32 0% 2.70 RR East Cup 2018
5 410 2017-12-11 50/84 0% 3.40 EMA VI Russian Riichi Championship 2017
6 641 2017-06-03 15/40 0% 1.80 RR Saint Petersburg championship. West cup 2017
7 209 2017-03-18 35/44 0% 1.90 RR Saint Petersburg championship. South cup 2017
8 14 2016-12-04 71/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016