Bogatikov Aleksander

From Moscow, Russia

EMA: 15990107

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Common russian riichi rating (CRR)

Rating date Aug. 12, 2023 (latest changes Aug. 12, 2023).

87 place (315.01).

max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 2.80 * 1) = 13.642914999999999

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 = 267.67739885501015

score = 362.3427109771416 * 0.5 + 267.67739885501015 * 0.5 = 315.0100549160759

Rating changes

Show

all results
Date Place Points Reason
2023-08-12 92 -> 87 301.02 -> 315.01

Moscow Riichi 2022: 86% -> 71%
2023-07-28 93 -> 92 299.72 -> 301.02

Saint Petersburg Open 2021: 43% -> 29%
2023-07-06 95 -> 93 299.72
2023-07-03 96 -> 95 299.72
2023-06-19 97 -> 96 299.72
2023-06-12 102 -> 97 287.47 -> 299.72

Moscow Riichi 2022: 100% -> 86%
2023-06-11 84 -> 102 299.20 -> 287.47
2023-05-28 85 -> 84 298.87 -> 299.20

Saint Petersburg Open 2021: 57% -> 43%
2023-05-20 86 -> 85 293.83 -> 298.87
2023-05-01 84 -> 86 293.83

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
4 421 2020-02-02 12/20 0% 2.40 CRR double-burning-2020
5 757 2019-12-15 28/112 0% 4.05 EMA VIII Russian Riichi Championship
6 524 2018-12-16 31/64 0% 3.45 EMA White Dragon Tournament
7 218 2016-09-11 69/88 0% 3.45 EMA V Russian Riichi Championship 2016
8 788 2016-03-13 22/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016
9 373 2015-10-18 33/52 0% 2.90 EMA Russian Open Riichi Championship 2015
10 257 2015-08-22 27/36 0% 1.70 EMA Nizhny Novgorod Riichi Championship 2015
11 512 2015-03-08 22/44 0% 2.50 EMA Moscow Riichi Championship 2015
12 455 2015-01-25 7/12 0% 0.90 CRR "Haku no Ten" winter riichi mahjong tournament 2015
13 0 2014-12-07 64/64 0% 3.15 EMA Russian Open Riichi Championship 2014
14 130 2014-10-18 21/24 0% 1.40 EMA Vologda Riichi Championship 2014
15 206 2014-09-21 51/64 0% 3.15 RR "Japanese House" riichi mahjong cup 2014
16 533 2014-06-29 8/16 0% 1.20 RR "Haku no Ten" summer riichi mahjong tournament 2014
17 493 2014-02-15 39/76 0% 2.50 RR Moscow Riichi 2014
18 254 2013-12-08 54/72 0% 3.25 EMA Russian Riichi Championship 2013
19 545 2013-05-19 26/56 0% 3.00 RR "Japanese House" riichi mahjong cup 2013