Bykov Dmitriy

From Saint Petersburg, Russia

EMA: 15990236

Player page

Common russian riichi rating (CRR)

Rating date March 31, 2025 (latest changes March 30, 2025).

220 place (154.69).

max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85

p1 = (299.07 * 4 * 0.43 + 578.95 * 1.50 * 1 + 0 + 0 + 0) / (4 * 0.43 + 1.50 * 1 + 1 + 1 + 1) = 222.24832646755922

p2 = (578.95 * 1.50 * 1 + 299.07 * 4 * 0.43) / max_coefficients = 87.13817034700315

score = 222.24832646755922 * 0.5 + 87.13817034700315 * 0.5 = 154.6932484072812

Rating changes

Show

all results
Date Place Points Reason
2025-03-29 217 -> 220 154.69
2025-03-23 207 -> 217 154.69
2025-03-03 203 -> 207 163.31 -> 154.69

SPB Riichi Open 2023: 57% -> 43%
2025-03-02 202 -> 203 163.31
2025-02-25 204 -> 202 163.31
2025-02-16 197 -> 204 163.31
2025-02-02 191 -> 197 163.31
2025-01-26 182 -> 191 163.31
2025-01-14 183 -> 182 163.31
2025-01-07 179 -> 183 163.31

Tournaments

# Base rank Date Place Power Coefficient Type Tournament
1 579 2024-05-25 9/20 100% 1.50 CRR Duplicate riichi mahjong tournament 2024
2 299 2023-09-03 76/108 43% 4.00 RR SPB Riichi Open 2023
3 747 2021-11-28 20/76 0% 3.45 RR Saint Petersburg Open 2021
4 635 2019-11-24 24/64 0% 3.45 EMA Saint Petersburg Open 2019
5 692 2018-12-23 13/40 0% 2.90 RR North Cup 2018
6 873 2018-06-11 10/72 0% 3.55 EMA RCR Saint Petersburg South Cup 2018
7 742 2018-03-04 9/32 0% 2.70 RR East Cup 2018
8 506 2017-12-11 42/84 0% 3.40 EMA VI Russian Riichi Championship 2017
9 103 2017-10-01 36/40 0% 1.80 RR Saint Petersburg championship. Northern cup 2017
10 282 2017-06-03 29/40 0% 1.80 RR Saint Petersburg championship. West cup 2017
11 860 2017-03-18 7/44 0% 1.90 RR Saint Petersburg championship. South cup 2017
12 183 2016-12-04 59/72 0% 3.25 EMA Saint Petersburg Riichi Open 2016
13 0 2016-10-16 32/32 0% 1.60 RR Tournament of 4 winds. West cup 2016
14 770 2016-09-11 21/88 0% 3.45 EMA V Russian Riichi Championship 2016
15 1000 2016-07-03 1/24 0% 1.40 RR Tournament of 4 winds. South cup 2016
16 596 2016-03-13 41/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016
17 282 2016-02-22 29/40 0% 2.60 EMA Ivanovo Region Riichi Championship 2016
18 158 2015-11-15 17/20 0% 1.30 RR Tournament of Saint Petersburg riichi mahjong league
19 451 2015-10-18 29/52 0% 2.90 EMA Russian Open Riichi Championship 2015
20 886 2015-08-22 5/36 0% 1.70 EMA Nizhny Novgorod Riichi Championship 2015
21 684 2015-03-15 7/20 0% 2.10 RR Nizhny Novgorod riichi mahjong tournament