Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date Jan. 14, 2025 (latest changes Jan. 14, 2025).
191 place (145.12).
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 * 0.29 + 485.98 * 4 * 0.57 + 21.74 * 2.10 * 1 + 21.05 * 3.85 * 1) / (1.80 * 0.14 + 1.40 * 0.29 + 4 * 0.57 + 2.10 * 1 + 3.85 * 1) = 186.929875854624
p2 = (485.98 * 4 * 0.57 + 1000 * 1.40 * 0.29 + 21.05 * 3.85 * 1 + 21.74 * 2.10 * 1) / max_coefficients = 103.30851735015773
score = 186.929875854624 * 0.5 + 103.30851735015773 * 0.5 = 145.11919660239084
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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% |
| 2024-12-22 | 172 -> 174 | 175.97 -> 161.61 |
Fire cup 2023: 43% -> 29% |
| 2024-12-01 | 171 -> 172 | 175.97 | |
| 2024-11-05 | 173 -> 171 | 175.97 | |
| 2024-11-04 | 172 -> 173 | 175.97 |