Chekan Vikmar
From Saint Petersburg, Russia
EMA: 15990345
Common russian riichi rating (CRR)
Rating date March 15, 2026 (latest changes March 15, 2026).
317 place (4.17).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (21.74 * 2.10 * 0.14 + 21.05 * 3.85 * 0.43 + 0 * 3.45 * 1 + 0 + 0) / (2.10 * 0.14 + 3.85 * 0.43 + 3.45 * 1 + 1 + 1) = 5.575524985811195
p2 = (21.05 * 3.85 * 0.43 + 21.74 * 2.10 * 0.14 + 0 * 3.45 * 1) / max_coefficients = 2.7598662207357862
score = 5.575524985811195 * 0.5 + 2.7598662207357862 * 0.5 = 4.167695603273491
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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% |
| 2026-02-25 | 318 -> 315 | 5.09 | |
| 2026-02-23 | 310 -> 318 | 5.09 | |
| 2026-02-08 | 309 -> 310 | 5.09 | |
| 2026-01-30 | 309 | 5.58 -> 5.09 |
Seihoku spring tournament 2024: 29% -> 14% |
| 2026-01-25 | 303 -> 309 | 5.58 | |
| 2026-01-07 | 301 -> 303 | 5.58 | |
| 2026-01-03 | 297 -> 301 | 5.58 |