Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date Sept. 20, 2023 (latest changes Sept. 20, 2023).
87 place (352.87).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (1000 * 1.40 * 1 + 410.26 * 1.80 * 0.86 + 96.77 * 1.80 * 1 + 485.98 * 4 * 1 + 0) / (1.40 * 1 + 1.80 * 0.86 + 1.80 * 1 + 4 * 1 + 1) = 426.0652503700176
p2 = (485.98 * 4 * 1 + 1000 * 1.40 * 1 + 410.26 * 1.80 * 0.86 + 96.77 * 1.80 * 1) / max_coefficients = 279.6660898482542
score = 426.0652503700176 * 0.5 + 279.6660898482542 * 0.5 = 352.8656701091359
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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 |