Chekan Vikmar

From Saint Petersburg, Russia

EMA: 15990345

Player page

Common russian riichi rating (CRR)

Rating date May 22, 2026 (latest changes May 19, 2026).

340 place (2.31).

max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85

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 = 1.5595959595959596

score = 3.0675720154252777 * 0.5 + 1.5595959595959596 * 0.5 = 2.3135839875106186

Rating changes

Show

all results
Date Place Points Reason
2026-05-19 344 -> 340 2.31
2026-05-17 342 -> 344 2.31
2026-05-12 352 -> 342 2.31
2026-05-11 348 -> 352 2.31
2026-05-05 350 -> 348 2.31
2026-05-03 340 -> 350 2.31
2026-05-01 340 3.31 -> 2.31

SPB Riichi Open 2024: 43% -> 29%
2026-04-19 330 -> 340 3.31
2026-04-11 328 -> 330 3.31
2026-04-05 322 -> 328 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 1000 2023-04-22 🥇 1/24 0% 1.40 CRR Fire cup 2023 Saint Petersburg
6 97 2023-02-25 29/32 0% 1.80 CRR Earth cup Saint Petersburg
7 410 2022-08-27 24/40 0% 1.80 CRR Sun tournament Saint Petersburg
8 721 2019-12-15 32/112 0% 4.05 EMA VIII Russian Riichi Championship Moscow
9 571 2019-11-24 28/64 0% 3.45 EMA Saint Petersburg Open 2019 Saint Petersburg
10 692 2019-06-02 13/40 0% 2.90 RR Summer Cup 2019 Saint Petersburg
11 590 2018-12-23 17/40 0% 2.90 RR North Cup 2018 Saint Petersburg
12 677 2018-03-04 11/32 0% 2.70 RR East Cup 2018 Saint Petersburg
13 108 2017-12-11 75/84 0% 3.40 EMA VI Russian Riichi Championship 2017 Saint Petersburg
14 1000 2017-10-01 🥇 1/40 0% 1.80 RR Saint Petersburg championship. Northern cup 2017 Saint Petersburg
15 1000 2017-06-03 🥇 1/40 0% 1.80 RR Saint Petersburg championship. West cup 2017 Saint Petersburg
16 977 2017-03-18 🥈 2/44 0% 1.90 RR Saint Petersburg championship. South cup 2017 Saint Petersburg
17 533 2016-04-17 8/16 0% 1.20 RR Riichi mahjong league tournament 2016 (JPML-A rules) Moscow
18 162 2016-03-13 84/100 0% 3.40 RR "Japanese House" riichi mahjong cup 2016 Moscow
19 684 2015-11-15 7/20 0% 1.30 RR Tournament of Saint Petersburg riichi mahjong league Saint Petersburg