Bogatikov Aleksander

From Moscow, Russia

EMA: 15990107

Player page

Internal rating (RR)

Rating date Sept. 6, 2023 (latest changes Sept. 6, 2023).

89 place (304.19).

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

p1 = (160 * 3.45 * 0.29 + 27.03 * 4.05 * 0.71 + 813.33 * 4.20 * 1 + 0 + 0) / (3.45 * 0.29 + 4.05 * 0.71 + 4.20 * 1 + 1 + 1) = 362.3427109771416

p2 = (813.33 * 4.20 * 1 + 160 * 3.45 * 0.29 + 27.03 * 4.05 * 0.71) / max_coefficients = 246.03657704702886

score = 362.3427109771416 * 0.5 + 246.03657704702886 * 0.5 = 304.18964401208524

Rating changes

Show

all results
Date Place Points Reason
2023-09-03 67 -> 89 323.35 -> 304.19
2023-08-19 68 -> 67 323.35
2023-08-12 75 -> 68 308.71 -> 323.35

Moscow Riichi 2022: 86% -> 71%
2023-07-28 79 -> 75 307.57 -> 308.71

Saint Petersburg Open 2021: 43% -> 29%
2023-07-20 79 302.56 -> 307.57
2023-07-06 80 -> 79 302.56
2023-06-19 81 -> 80 302.56
2023-06-12 84 -> 81 290.10 -> 302.56

Moscow Riichi 2022: 100% -> 86%
2023-06-11 66 -> 84 310.60 -> 290.10
2023-05-28 67 -> 66 308.10 -> 310.60

Saint Petersburg Open 2021: 57% -> 43%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 813 2022-11-06 15/76 100% 4.20 RR IX Russian Riichi Championship
2 27 2022-06-12 109/112 71% 4.05 RR Moscow Riichi 2022
3 160 2021-11-28 64/76 29% 3.45 RR Saint Petersburg Open 2021
4 757 2019-12-15 28/112 0% 4.05 EMA VIII Russian Riichi Championship
5 524 2018-12-16 31/64 0% 3.45 EMA White Dragon Tournament
6 218 2016-09-11 69/88 0% 3.45 EMA V Russian Riichi Championship 2016
7 788 2016-03-13 22/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016
8 373 2015-10-18 33/52 0% 2.90 EMA Russian Open Riichi Championship 2015
9 257 2015-08-22 27/36 0% 1.70 EMA Nizhny Novgorod Riichi Championship 2015
10 512 2015-03-08 22/44 0% 2.50 EMA Moscow Riichi Championship 2015
11 0 2014-12-07 64/64 0% 3.15 EMA Russian Open Riichi Championship 2014
12 130 2014-10-18 21/24 0% 1.40 EMA Vologda Riichi Championship 2014
13 206 2014-09-21 51/64 0% 3.15 RR "Japanese House" riichi mahjong cup 2014
14 533 2014-06-29 8/16 0% 1.20 RR "Haku no Ten" summer riichi mahjong tournament 2014
15 493 2014-02-15 39/76 0% 2.50 RR Moscow Riichi 2014
16 254 2013-12-08 54/72 0% 3.25 EMA Russian Riichi Championship 2013
17 545 2013-05-19 26/56 0% 3.00 RR "Japanese House" riichi mahjong cup 2013