Karpov Alexandr

From Novosibirsk, Russia

EMA: 15020011

Player page

Internal rating (RR)

Rating date April 30, 2019 (latest changes April 30, 2019).

123 place (362.14).

max_coefficients = (3.85 * 1 + 3.80 * 1 + 3.55 * 1 + 3.45 * 1) = 14.649999999999999

p1 = (739.13 * 2.20 * 0.29 + 387.10 * 2.20 * 0.71 + 304.35 * 2.20 * 1 + 191.49 * 3.10 * 1 + 241.76 * 3.80 * 1 + 836.36 * 3 * 1) / (2.20 * 0.29 + 2.20 * 0.71 + 2.20 * 1 + 3.10 * 1 + 3.80 * 1 + 3 * 1) = 403.06573426573425

p2 = (836.36 * 3 * 1 + 241.76 * 3.80 * 1 + 304.35 * 2.20 * 1 + 387.10 * 2.20 * 0.71) / max_coefficients = 321.2047781569966

score = 403.06573426573425 * 0.5 + 321.2047781569966 * 0.5 = 362.13525621136546

Rating changes

Show

Date Place Points Reason
2019-04-24 124 -> 123 362.14
2019-04-22 125 -> 124 362.14
2019-04-13 123 -> 125 368.77 -> 362.14

Siberia Cup 2017: 43% -> 29%

2019-04-11 125 -> 123 368.77
2019-03-25 126 -> 125 368.77
2019-03-24 127 -> 126 368.77
2019-03-21 128 -> 127 368.77
2019-03-17 126 -> 128 368.77
2019-03-12 128 -> 126 368.77
2019-03-08 127 -> 128 368.77

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 836 2019-01-05 10/56 100% 3.00 EMA Snow Dragon
2 242 2018-11-18 70/92 100% 3.80 EMA VII Russian Riichi Championship "Aki Shanten"
3 191 2018-08-19 39/48 100% 3.10 RR Moscow Riichi Open 2018
4 304 2018-08-12 17/24 100% 2.20 RR Siberian riichi
5 387 2018-01-05 20/32 71% 2.20 RR Russian riichi championship by JPML-B rules
6 739 2017-08-13 7/24 29% 2.20 EMA Siberia Cup 2017
7 457 2017-01-05 20/36 0% 2.50 RR Quick discard 2017
8 774 2016-05-03 8/32 0% 2.40 RR Siberia Cup 2016
9 977 2016-01-05 2/44 0% 1.90 RR Eighth winter tournament
10 600 2015-01-07 15/36 0% 1.70 RR Seventh winter tournament
11 739 2014-01-06 7/24 0% 1.40 RR Furiten tournament 2014
12 1000 2013-01-05 1/32 0% 2.00 RR Riichi tournament 2013