Grishin Viktor

Russian Champion 2014

From Vidnoye, Russia

EMA: 15990097

Player page

Internal rating (RR)

Rating date March 17, 2021 (latest changes March 17, 2021).

28 place (547.15).

max_coefficients = (4.05 * 0.71 + 2.90 * 0.86 + 3.45 * 0.71 + 2.70 * 0.86) = 10.15701

p1 = (855.42 * 4.20 * 0.14 + 205.13 * 2.90 * 0.29 + 942.86 * 3.20 * 0.43 + 412.70 * 3.45 * 0.71 + 702.70 * 4.05 * 0.71) / (4.20 * 0.14 + 2.90 * 0.29 + 3.20 * 0.43 + 3.45 * 0.71 + 4.05 * 0.71) = 616.1706801610301

p2 = (702.70 * 4.05 * 0.71 + 942.86 * 3.20 * 0.43 + 412.70 * 3.45 * 0.71 + 855.42 * 4.20 * 0.14) / max_coefficients = 478.13775904523084

score = 616.1706801610301 * 0.5 + 478.13775904523084 * 0.5 = 547.1542196031305

Rating changes

Show

Date Place Points Reason
2021-03-08 30 -> 28 537.78 -> 547.15
2021-03-04 27 -> 30 560.18 -> 537.78

Haru Shanten 2019: 29% -> 14%

2021-02-15 27 567.72 -> 560.18

VIII Russian Riichi Championship: 86% -> 71%

2021-02-02 28 -> 27 558.54 -> 567.72

Summer Cup 2019: 43% -> 29%

2021-01-26 28 553.57 -> 558.54
2021-01-24 29 -> 28 551.84 -> 553.57

Saint Petersburg Open 2019: 86% -> 71%

2021-01-21 27 -> 29 576.82 -> 551.84

Moscow Open Riichi Marathon 2019: 57% -> 43%

2021-01-08 28 -> 27 576.82
2021-01-04 27 -> 28 591.77 -> 576.82

Haru Shanten 2019: 43% -> 29%

2020-12-15 27 596.79 -> 591.77

VIII Russian Riichi Championship: 100% -> 86%

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 703 2019-12-15 34/112 71% 4.05 EMA VIII Russian Riichi Championship
2 413 2019-11-24 38/64 71% 3.45 EMA Saint Petersburg Open 2019
3 943 2019-07-21 3/36 43% 3.20 RR Moscow Open Riichi Marathon 2019
4 205 2019-06-02 32/40 29% 2.90 RR Summer Cup 2019
5 855 2019-05-04 13/84 14% 4.20 EMA Haru Shanten 2019
6 741 2018-07-15 8/28 0% 3.00 RR Moscow Open Riichi Marathon
7 916 2017-12-11 8/84 0% 3.40 EMA VI Russian Riichi Championship 2017
8 1000 2017-10-07 1/16 0% 1.40 RR Red Dragon tournament 2017
9 926 2017-09-24 3/28 0% 2.60 RR Moscow Riichi Half Marathon 2017
10 852 2017-09-03 5/28 0% 2.30 EMA Riichi Open Bratislava 2017
11 296 2017-08-06 20/28 0% 2.30 EMA Ivanovo Region Riichi 2017
12 371 2017-07-09 23/36 0% 3.20 RR Moscow Open Riichi Marathon 2017
13 957 2017-06-04 2/24 0% 2.90 EMA Prague Open 2017
14 533 2017-02-12 8/16 0% 2.30 RR February mini-tournament glhf; 2017
15 197 2016-12-04 58/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016
16 885 2016-09-11 11/88 0% 3.45 EMA V Russian Riichi Championship 2016
17 957 2016-07-03 2/24 0% 1.40 RR Tournament of 4 winds. South cup 2016
18 391 2016-05-28 15/24 0% 1.60 RR May tournament glhf; 2016
19 800 2016-04-17 4/16 0% 1.20 RR Riichi mahjong league tournament 2016 (JPML-A rules)
20 179 2016-02-22 33/40 0% 2.60 EMA Ivanovo Region Riichi Championship 2016
21 275 2015-10-18 38/52 0% 2.90 EMA Russian Open Riichi Championship 2015
22 744 2015-03-08 12/44 0% 2.50 EMA Moscow Riichi Championship 2015
23 870 2015-03-01 4/24 0% 1.40 EMA Crimean Riichi Open 2015
24 1000 2014-12-07 1/64 0% 3.15 EMA Russian Open Riichi Championship 2014
25 429 2014-09-21 37/64 0% 3.15 RR "Japanese House" riichi mahjong cup 2014
26 1000 2014-06-29 1/16 0% 1.20 RR "Haku no Ten" summer riichi mahjong tournament 2014
27 944 2013-12-08 5/72 0% 3.25 RR Russian Riichi Championship 2013
28 889 2013-11-24 4/28 0% 1.50 EMA Crimean Riichi Open 2013
29 800 2013-05-19 12/56 0% 3.00 RR "Japanese House" riichi mahjong cup 2013
30 407 2013-02-17 17/28 0% 2.30 RR Saint Petersburg Riichi tournament
31 895 2012-08-12 3/20 0% 1.30 EMA Russian Open Riichi Championship 2012