Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date Feb. 22, 2025 (latest changes Feb. 22, 2025).
212 place (129.46).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (96.77 * 1.80 * 0.14 + 1000 * 1.40 * 0.14 + 485.98 * 4 * 0.57 + 21.74 * 2.10 * 1 + 21.05 * 3.85 * 1) / (1.80 * 0.14 + 1.40 * 0.14 + 4 * 0.57 + 2.10 * 1 + 3.85 * 1) = 168.2307819732931
p2 = (485.98 * 4 * 0.57 + 1000 * 1.40 * 0.14 + 21.05 * 3.85 * 1 + 21.74 * 2.10 * 1) / max_coefficients = 90.69526813880127
score = 168.2307819732931 * 0.5 + 90.69526813880127 * 0.5 = 129.46302505604717
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-02-22 | 211 -> 212 | 145.12 -> 129.46 |
Fire cup 2023: 29% -> 14% |
| 2025-02-16 | 204 -> 211 | 145.12 | |
| 2025-02-02 | 199 -> 204 | 145.12 | |
| 2025-01-26 | 191 -> 199 | 145.12 | |
| 2025-01-14 | 193 -> 191 | 145.12 | |
| 2025-01-07 | 188 -> 193 | 145.12 | |
| 2025-01-04 | 185 -> 188 | 145.12 | |
| 2025-01-03 | 175 -> 185 | 162.91 -> 145.12 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-29 | 174 -> 175 | 162.91 | |
| 2024-12-25 | 174 | 161.61 -> 162.91 |
Earth cup: 29% -> 14% |