Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date May 2, 2026 (latest changes May 2, 2026).
341 place (2.31).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (21.05 * 3.85 * 0.29 + 0 * 3.45 * 1 + 0 + 0 + 0) / (3.85 * 0.29 + 3.45 * 1 + 1 + 1 + 1) = 3.0675720154252777
p2 = (21.05 * 3.85 * 0.29 + 0 * 3.45 * 1) / max_coefficients = 1.5491638795986622
score = 3.0675720154252777 * 0.5 + 1.5491638795986622 * 0.5 = 2.30836794751197
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-01 | 341 | 3.31 -> 2.31 |
SPB Riichi Open 2024: 43% -> 29% |
| 2026-04-19 | 331 -> 341 | 3.31 | |
| 2026-04-11 | 329 -> 331 | 3.31 | |
| 2026-04-05 | 323 -> 329 | 3.31 | |
| 2026-03-30 | 330 -> 323 | 4.17 -> 3.31 |
Seihoku spring tournament 2024: 14% -> 0% |
| 2026-03-21 | 320 -> 330 | 4.17 | |
| 2026-03-14 | 317 -> 320 | 4.17 | |
| 2026-03-10 | 318 -> 317 | 4.17 | |
| 2026-03-07 | 315 -> 318 | 4.17 | |
| 2026-03-01 | 315 | 5.09 -> 4.17 |
SPB Riichi Open 2024: 57% -> 43% |