Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date April 24, 2024 (latest changes April 22, 2024).
89 place (321.84).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 2.90 * 1) = 13.700000000000001
p1 = (410.26 * 1.80 * 0.43 + 96.77 * 1.80 * 0.86 + 1000 * 1.40 * 0.86 + 485.98 * 4 * 1 + 21.74 * 2.10 * 1) / (1.80 * 0.43 + 1.80 * 0.86 + 1.40 * 0.86 + 4 * 1 + 2.10 * 1) = 380.2001206548647
p2 = (485.98 * 4 * 1 + 1000 * 1.40 * 0.86 + 410.26 * 1.80 * 0.43 + 96.77 * 1.80 * 0.86) / max_coefficients = 263.4795620437956
score = 380.2001206548647 * 0.5 + 263.4795620437956 * 0.5 = 321.8398413493302
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-04-22 | 85 -> 89 | 335.46 -> 321.84 |
Fire cup 2023: 100% -> 86% |
| 2024-04-18 | 86 -> 85 | 335.46 | |
| 2024-04-12 | 87 -> 86 | 335.46 | |
| 2024-03-30 | 76 -> 87 | 357.63 -> 335.46 |
Seihoku spring tournament 2024: 0% -> 100% |
| 2024-03-20 | 80 -> 76 | 357.63 | |
| 2024-03-10 | 75 -> 80 | 364.56 -> 357.63 | |
| 2024-03-06 | 77 -> 75 | 358.14 -> 364.56 | |
| 2024-02-27 | 77 | 361.62 -> 358.14 |
Sun tournament: 57% -> 43% |
| 2024-02-25 | 75 -> 77 | 357.80 -> 361.62 |
Earth cup: 100% -> 86% |
| 2024-02-12 | 77 -> 75 | 357.80 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 22 |
|
46/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 2 | 486 |
|
56/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 3 | 1000 |
|
1/24 | 86% | 1.40 | CRR | Fire cup 2023 |
| 4 | 97 |
|
29/32 | 86% | 1.80 | CRR | Earth cup |
| 5 | 410 |
|
24/40 | 43% | 1.80 | CRR | Sun tournament |
| 6 | 721 |
|
32/112 | 0% | 4.05 | EMA | VIII Russian Riichi Championship |
| 7 | 571 |
|
28/64 | 0% | 3.45 | EMA | Saint Petersburg Open 2019 |
| 8 | 692 |
|
13/40 | 0% | 2.90 | RR | Summer Cup 2019 |
| 9 | 590 |
|
17/40 | 0% | 2.90 | RR | North Cup 2018 |
| 10 | 677 |
|
11/32 | 0% | 2.70 | RR | East Cup 2018 |
| 11 | 108 |
|
75/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |
| 12 | 1000 |
|
1/40 | 0% | 1.80 | RR | Saint Petersburg championship. Northern cup 2017 |
| 13 | 1000 |
|
1/40 | 0% | 1.80 | RR | Saint Petersburg championship. West cup 2017 |
| 14 | 977 |
|
2/44 | 0% | 1.90 | RR | Saint Petersburg championship. South cup 2017 |
| 15 | 533 |
|
8/16 | 0% | 1.20 | RR | Riichi mahjong league tournament 2016 (JPML-A rules) |
| 16 | 162 |
|
84/100 | 0% | 3.40 | RR | "Japanese House" riichi mahjong cup 2016 |
| 17 | 684 |
|
7/20 | 0% | 1.30 | RR | Tournament of Saint Petersburg riichi mahjong league |