Bogatikov Aleksander

From Moscow, Russia

EMA: 15990107

Player page

Common russian riichi rating (CRR)

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

81 place (288.85).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 1 + 2.80 * 1) = 14.55

p1 = (160 * 3.45 * 0.71 + 27.03 * 4.05 * 1 + 813.33 * 4.20 * 1 + 0 + 0) / (3.45 * 0.71 + 4.05 * 1 + 4.20 * 1 + 1 + 1) = 308.2937487489515

p2 = (813.33 * 4.20 * 1 + 160 * 3.45 * 0.71 + 27.03 * 4.05 * 1) / max_coefficients = 269.39862542955325

score = 308.2937487489515 * 0.5 + 269.39862542955325 * 0.5 = 288.84618708925234

Rating changes

Show

all results
Date Place Points Reason
2023-01-28 82 -> 81 287.32 -> 288.85

Saint Petersburg Open 2021: 86% -> 71%
2023-01-14 81 -> 82 287.32
2023-01-06 83 -> 81 287.32
2023-01-03 84 -> 83 287.32
2022-12-19 84 286.01 -> 287.32
2022-12-18 82 -> 84 286.01
2022-11-28 83 -> 82 282.94 -> 286.01

Saint Petersburg Open 2021: 100% -> 86%
2022-11-06 111 -> 83 54.63 -> 282.94

IX Russian Riichi Championship: 0% -> 100%
2022-11-05 69 -> 111 361.99 -> 54.63
2021-02-01 117 -> 69 378.88 -> 361.99

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 2022-06-12 109/112 100% 4.05 RR Moscow Riichi 2022
3 160 2021-11-28 64/76 71% 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