Bogatikov Aleksander

From Moscow, Russia

EMA: 15990107

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Internal rating (RR)

Rating date March 21, 2023 (latest changes March 20, 2023).

70 place (385.35).

max_coefficients = (4.20 * 1 + 4.05 * 1 + 3.50 * 0.86 + 3.45 * 0.71) = 13.714185

p1 = (756.76 * 4.05 * 0.43 + 160 * 3.45 * 0.71 + 27.03 * 4.05 * 1 + 813.33 * 4.20 * 1 + 0) / (4.05 * 0.43 + 3.45 * 0.71 + 4.05 * 1 + 4.20 * 1 + 1) = 389.0918810289689

p2 = (813.33 * 4.20 * 1 + 756.76 * 4.05 * 0.43 + 160 * 3.45 * 0.71 + 27.03 * 4.05 * 1) / max_coefficients = 381.60123988410544

score = 389.0918810289689 * 0.5 + 381.60123988410544 * 0.5 = 385.3465604565372

Rating changes

Show

all results
Date Place Points Reason
2023-03-20 72 -> 70 378.63 -> 385.35
2023-03-06 75 -> 72 378.63
2023-02-28 77 -> 75 378.63
2023-02-19 78 -> 77 376.17 -> 378.63
2023-01-30 73 -> 78 398.94 -> 376.17

VIII Russian Riichi Championship: 57% -> 43%
2023-01-28 75 -> 73 393.46 -> 398.94

Saint Petersburg Open 2021: 86% -> 71%
2023-01-06 76 -> 75 393.46
2022-12-30 79 -> 76 393.46
2022-12-19 82 -> 79 391.58 -> 393.46
2022-11-30 81 -> 82 413.24 -> 391.58

VIII Russian Riichi Championship: 71% -> 57%

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
4 757 2019-12-15 28/112 43% 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