Chukhnin Sergei
From Ufa, Russia
Common russian riichi rating (CRR)
Rating date March 23, 2026 (latest changes March 21, 2026).
277 place (132.22).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (133.33 * 1.20 * 0.71 + 157.89 * 1.90 * 1 + 478.26 * 1.60 * 1 + 0 + 0) / (1.20 * 0.71 + 1.90 * 1 + 1.60 * 1 + 1 + 1) = 185.5403985427455
p2 = (478.26 * 1.60 * 1 + 157.89 * 1.90 * 1 + 133.33 * 1.20 * 0.71) / max_coefficients = 78.89698996655518
score = 185.5403985427455 * 0.5 + 78.89698996655518 * 0.5 = 132.21869425465033
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-03-21 | 269 -> 277 | 132.22 | |
| 2026-03-19 | 270 -> 269 | 132.22 | |
| 2026-03-15 | 271 -> 270 | 132.22 | |
| 2026-03-14 | 268 -> 271 | 132.22 | |
| 2026-03-12 | 270 -> 268 | 132.22 | |
| 2026-03-10 | 271 -> 270 | 132.22 | |
| 2026-03-07 | 303 -> 271 | 49.84 -> 132.22 |
Spring Martenho get-together 2026: 0% -> 100% |
| 2026-02-28 | 303 | 51.49 -> 49.84 |
Martenho's New Year's Eve tournament: 86% -> 71% |
| 2026-02-25 | 305 -> 303 | 51.49 | |
| 2026-02-23 | 297 -> 305 | 51.49 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 478 |
|
13/24 | 100% | 1.60 | CRR | Spring Martenho get-together 2026 | Ufa | |
| 2 | 158 |
|
17/20 | 100% | 1.90 | CRR | Martenho's Spring tournament | Ufa | |
| 3 | 133 |
|
14/16 | 71% | 1.20 | CRR | Martenho's New Year's Eve tournament | Ufa |