Bogatikov Aleksander
From Moscow, Russia
EMA: 15990107
Internal rating (RR)
Rating date March 21, 2023 (latest changes March 20, 2023).
70 place (385.35).
how we calculated rating score
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
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 |
|
15/76 | 100% | 4.20 | RR | IX Russian Riichi Championship |
2 | 27 |
|
109/112 | 100% | 4.05 | RR | Moscow Riichi 2022 |
3 | 160 |
|
64/76 | 71% | 3.45 | RR | Saint Petersburg Open 2021 |
4 | 757 |
|
28/112 | 43% | 4.05 | EMA | VIII Russian Riichi Championship |
5 | 524 |
|
31/64 | 0% | 3.45 | EMA | White Dragon Tournament |
6 | 218 |
|
69/88 | 0% | 3.45 | EMA | V Russian Riichi Championship 2016 |
7 | 788 |
|
22/100 | 0% | 3.40 | RR | "Japanese House" riichi mahjong cup 2016 |
8 | 373 |
|
33/52 | 0% | 2.90 | EMA | Russian Open Riichi Championship 2015 |
9 | 257 |
|
27/36 | 0% | 1.70 | EMA | Nizhny Novgorod Riichi Championship 2015 |
10 | 512 |
|
22/44 | 0% | 2.50 | EMA | Moscow Riichi Championship 2015 |
11 | 0 |
|
64/64 | 0% | 3.15 | EMA | Russian Open Riichi Championship 2014 |
12 | 130 |
|
21/24 | 0% | 1.40 | EMA | Vologda Riichi Championship 2014 |
13 | 206 |
|
51/64 | 0% | 3.15 | RR | "Japanese House" riichi mahjong cup 2014 |
14 | 533 |
|
8/16 | 0% | 1.20 | RR | "Haku no Ten" summer riichi mahjong tournament 2014 |
15 | 493 |
|
39/76 | 0% | 2.50 | RR | Moscow Riichi 2014 |
16 | 254 |
|
54/72 | 0% | 3.25 | EMA | Russian Riichi Championship 2013 |
17 | 545 |
|
26/56 | 0% | 3.00 | RR | "Japanese House" riichi mahjong cup 2013 |