Chekan Vikmar

From Saint Petersburg, Russia

EMA: 15990345

Player page

Internal rating (RR)

Rating date June 21, 2026 (latest changes June 16, 2026).

252 place (2.28).

max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997

p1 = (21.05 * 3.85 * 0.29 + 0 * 3.45 * 1 + 0 + 0 + 0) / (3.85 * 0.29 + 3.45 * 1 + 1 + 1 + 1) = 3.0675720154252777

p2 = (21.05 * 3.85 * 0.29 + 0 * 3.45 * 1) / max_coefficients = 1.4870833710561955

score = 3.0675720154252777 * 0.5 + 1.4870833710561955 * 0.5 = 2.2773276932407365

Rating changes

Show

all results
Date Place Points Reason
2026-06-15 252 2.25 -> 2.28
2026-06-14 236 -> 252 2.31 -> 2.25
2026-06-09 240 -> 236 2.31
2026-05-17 238 -> 240 2.31
2026-05-12 249 -> 238 2.31
2026-05-03 245 -> 249 2.31
2026-05-01 245 3.31 -> 2.31

SPB Riichi Open 2024: 43% -> 29%
2026-04-19 233 -> 245 3.31
2026-04-11 230 -> 233 3.31
2026-04-05 229 -> 230 3.31

Tournaments

# Base rank Date Place Power Coefficient Rating Tournament City
1 0 2025-08-31 78/78 100% 3.45 RR SPB Riichi Open 2025 Saint Petersburg
2 21 2024-09-01 94/96 29% 3.85 RR SPB Riichi Open 2024 Saint Petersburg
3 22 2024-03-30 46/47 0% 2.10 RR Seihoku spring tournament 2024 Saint Petersburg
4 486 2023-09-03 56/108 0% 4.00 RR SPB Riichi Open 2023 Saint Petersburg
5 721 2019-12-15 32/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
6 571 2019-11-24 28/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
7 692 2019-06-02 13/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
8 590 2018-12-23 17/40 0% 2.90 RR North Cup 2018 Saint Petersburg
9 677 2018-03-04 11/32 0% 2.70 RR East Cup 2018 Saint Petersburg
10 108 2017-12-11 75/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg
11 1000 2017-10-01 🥇 1/40 0% 1.80 RR Saint Petersburg championship. Northern cup 2017 Saint Petersburg
12 1000 2017-06-03 🥇 1/40 0% 1.80 RR Saint Petersburg championship. West cup 2017 Saint Petersburg
13 977 2017-03-18 🥈 2/44 0% 1.90 RR Saint Petersburg championship. South cup 2017 Saint Petersburg
14 533 2016-04-17 8/16 0% 1.20 RR Riichi mahjong league tournament 2016 (JPML-A rules) Moscow
15 162 2016-03-13 84/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016 Moscow
16 684 2015-11-15 7/20 0% 1.30 RR Tournament of Saint Petersburg riichi mahjong league Saint Petersburg