Bykov Dmitriy

From Saint Petersburg, Russia

EMA: 15990236

Player page

Internal rating (RR)

Rating date Sept. 25, 2023 (latest changes Sept. 20, 2023).

119 place (186.07).

max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915

p1 = (746.67 * 3.45 * 0.29 + 299.07 * 4 * 1 + 0 + 0 + 0) / (3.45 * 0.29 + 4 * 1 + 1 + 1 + 1) = 241.9610639815219

p2 = (299.07 * 4 * 1 + 746.67 * 3.45 * 0.29) / max_coefficients = 130.1779333776418

score = 241.9610639815219 * 0.5 + 130.1779333776418 * 0.5 = 186.06949867958184

Rating changes

Show

all results
Date Place Points Reason
2023-09-20 123 -> 119 186.07
2023-09-06 125 -> 123 186.07
2023-09-03 122 -> 125 193.41 -> 186.07

SPB Riichi Open 2023: 0% -> 100%
2023-06-19 125 -> 122 193.41
2023-06-12 125 191.38 -> 193.41
2023-06-11 115 -> 125 199.10 -> 191.38
2023-05-30 112 -> 115 227.37 -> 199.10

Saint Petersburg Open 2019: 29% -> 14%
2023-05-28 106 -> 112 258.52 -> 227.37

Saint Petersburg Open 2021: 57% -> 43%
2023-05-20 107 -> 106 255.41 -> 258.52
2023-05-06 109 -> 107 255.41

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 299 2023-09-03 76/108 100% 4.00 RR SPB Riichi Open 2023
2 747 2021-11-28 20/76 29% 3.45 RR Saint Petersburg Open 2021
3 635 2019-11-24 24/64 0% 3.45 EMA Saint Petersburg Open 2019
4 692 2018-12-23 13/40 0% 2.90 RR North Cup 2018
5 873 2018-06-11 10/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
6 742 2018-03-04 9/32 0% 2.70 RR East Cup 2018
7 506 2017-12-11 42/84 0% 3.40 EMA VI Russian Riichi Championship 2017
8 103 2017-10-01 36/40 0% 1.80 RR Saint Petersburg championship. Northern cup 2017
9 282 2017-06-03 29/40 0% 1.80 RR Saint Petersburg championship. West cup 2017
10 860 2017-03-18 7/44 0% 1.90 RR Saint Petersburg championship. South cup 2017
11 183 2016-12-04 59/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016
12 0 2016-10-16 32/32 0% 1.60 RR Tournament of 4 winds. West cup 2016
13 770 2016-09-11 21/88 0% 3.45 EMA V Russian Riichi Championship 2016
14 1000 2016-07-03 1/24 0% 1.40 RR Tournament of 4 winds. South cup 2016
15 596 2016-03-13 41/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016
16 282 2016-02-22 29/40 0% 2.60 EMA Ivanovo Region Riichi Championship 2016
17 158 2015-11-15 17/20 0% 1.30 RR Tournament of Saint Petersburg riichi mahjong league
18 451 2015-10-18 29/52 0% 2.90 EMA Russian Open Riichi Championship 2015
19 886 2015-08-22 5/36 0% 1.70 EMA Nizhny Novgorod Riichi Championship 2015
20 684 2015-03-15 7/20 0% 2.10 RR Nizhny Novgorod riichi mahjong tournament