Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date Oct. 27, 2023 (latest changes Oct. 27, 2023).
87 place (350.39).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 2.80 * 1) = 14.75
p1 = (410.26 * 1.80 * 0.71 + 96.77 * 1.80 * 1 + 1000 * 1.40 * 1 + 485.98 * 4 * 1 + 0) / (1.80 * 0.71 + 1.80 * 1 + 1.40 * 1 + 4 * 1 + 1) = 426.49281974838027
p2 = (485.98 * 4 * 1 + 1000 * 1.40 * 1 + 410.26 * 1.80 * 0.71 + 96.77 * 1.80 * 1) / max_coefficients = 274.2779661016949
score = 426.49281974838027 * 0.5 + 274.2779661016949 * 0.5 = 350.3853929250376
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-10-27 | 87 | 353.75 -> 350.39 |
Sun tournament: 86% -> 71% |
| 2023-10-22 | 84 -> 87 | 353.75 | |
| 2023-10-12 | 88 -> 84 | 352.87 -> 353.75 | |
| 2023-09-28 | 87 -> 88 | 352.87 | |
| 2023-09-20 | 88 -> 87 | 352.87 | |
| 2023-09-06 | 89 -> 88 | 352.87 | |
| 2023-09-03 | 116 -> 89 | 244.56 -> 352.87 |
SPB Riichi Open 2023: 0% -> 100% |
| 2023-09-01 | 43 -> 116 | 465.75 -> 244.56 | |
| 2021-02-01 | 41 -> 43 | 593.89 -> 465.75 | |
| 2020-02-01 | 41 | 593.89 |