Bogatikov Aleksander

From Moscow, Russia

EMA: 15990107

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Internal rating (RR)

Rating date Nov. 28, 2023 (latest changes Nov. 28, 2023).

83 place (277.16).

max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.86 + 4.05 * 0.57) = 13.663990000000002

p1 = (27.03 * 4.05 * 0.57 + 813.33 * 4.20 * 0.86 + 0 + 0 + 0) / (4.05 * 0.57 + 4.20 * 0.86 + 1 + 1 + 1) = 335.4726671221305

p2 = (813.33 * 4.20 * 0.86 + 27.03 * 4.05 * 0.57) / max_coefficients = 218.85261918370838

score = 335.4726671221305 * 0.5 + 218.85261918370838 * 0.5 = 277.16264315291943

Rating changes

Show

all results
Date Place Points Reason
2023-11-28 82 -> 83 294.86 -> 277.16

Saint Petersburg Open 2021: 14% -> 0%
2023-11-20 83 -> 82 294.86
2023-11-06 104 -> 83 378.88 -> 294.86

IX Russian Riichi Championship: 100% -> 86%
2020-02-01 104 378.88

Tournaments

# Base rank Date Place Power Coefficient Type Tournament City
1 813 2022-11-06 15/76 86% 4.20 RR IX Russian Riichi Championship Perm
2 27 2022-06-12 109/112 57% 4.05 RR Moscow Riichi 2022 Moscow
3 160 2021-11-28 64/76 0% 3.45 RR Saint Petersburg Open 2021 Saint Petersburg
4 757 2019-12-15 28/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
5 524 2018-12-16 31/64 0% 3.45 EMA White Dragon Tournament Moscow
6 218 2016-09-11 69/88 0% 3.45 EMA V Russian Riichi Championship 2016 Moscow
7 788 2016-03-13 22/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016 Moscow
8 373 2015-10-18 33/52 0% 2.90 EMA Russian Open Riichi Championship 2015 Vologda
9 257 2015-08-22 27/36 0% 1.70 EMA Nizhny Novgorod Riichi Championship 2015 Nizhny Novgorod
10 512 2015-03-08 22/44 0% 2.50 EMA Moscow Riichi Championship 2015 Moscow
11 0 2014-12-07 64/64 0% 3.15 EMA Russian Open Riichi Championship 2014 Moscow
12 130 2014-10-18 21/24 0% 1.40 EMA Vologda Riichi Championship 2014 Vologda
13 206 2014-09-21 51/64 0% 3.15 RR "Japanese House" riichi mahjong cup 2014 Moscow
14 533 2014-06-29 8/16 0% 1.20 RR "Haku no Ten" summer riichi mahjong tournament 2014 Vologda
15 493 2014-02-15 39/76 0% 2.50 RR Moscow Riichi 2014 Moscow
16 254 2013-12-08 54/72 0% 3.25 EMA Russian Riichi Championship 2013 Moscow
17 545 2013-05-19 26/56 0% 3.00 RR "Japanese House" riichi mahjong cup 2013 Moscow