Karpov Alexandr

From Novosibirsk, Russia

EMA: 15020011

Player page

Internal rating (RR)

Rating date Feb. 1, 2021 (latest changes Feb. 1, 2021).

50 place (413.58).

max_coefficients = (4.05 * 0.86 + 2.90 * 1 + 3.85 * 0.71 + 3.45 * 0.71) = 11.585645

p1 = (578.31 * 4.20 * 0.29 + 962.96 * 2.30 * 0.57 + 789.47 * 2.10 * 0.86 + 0 + 0) / (4.20 * 0.29 + 2.30 * 0.57 + 2.10 * 0.86 + 1 + 1) = 535.3868424011771

p2 = (789.47 * 2.10 * 0.86 + 962.96 * 2.30 * 0.57 + 578.31 * 4.20 * 0.29) / max_coefficients = 291.7809064579486

score = 535.3868424011771 * 0.5 + 291.7809064579486 * 0.5 = 413.58387442956285

Rating changes

Show

all results
Date Place Points Reason
2021-02-01 49 -> 50 562.36 -> 413.58
2020-02-01 49 562.36

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 789 2020-01-05 5/20 86% 2.10 EMA Snow Dragon Tournament
2 963 2019-08-25 2/28 57% 2.30 RR The Green dragon tournament
3 578 2019-05-04 36/84 29% 4.20 EMA Haru Shanten 2019
4 836 2019-01-05 10/56 0% 3.00 EMA Snow Dragon
5 242 2018-11-18 70/92 0% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"
6 191 2018-08-19 39/48 0% 3.10 RR Moscow Riichi Open 2018
7 304 2018-08-12 17/24 0% 2.20 RR Siberian riichi
8 387 2018-01-05 20/32 0% 2.20 RR Russian riichi championship by JPML-B rules
9 739 2017-08-13 7/24 0% 2.20 EMA Siberia Cup 2017
10 457 2017-01-05 20/36 0% 2.50 RR Quick discard 2017
11 774 2016-05-03 8/32 0% 2.40 RR Siberia Cup 2016
12 977 2016-01-05 2/44 0% 1.90 RR Eighth winter tournament
13 600 2015-01-07 15/36 0% 1.70 RR Seventh winter tournament
14 739 2014-01-06 7/24 0% 1.40 RR Furiten tournament 2014
15 1000 2013-01-05 1/32 0% 2.00 RR Riichi tournament 2013