Chukhnin Sergei
From Ufa, Russia
Common russian riichi rating (CRR)
Rating date May 3, 2026 (latest changes May 3, 2026).
291 place (131.66).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (133.33 * 1.20 * 0.57 + 157.89 * 1.90 * 0.86 + 478.26 * 1.60 * 1 + 0 + 0) / (1.20 * 0.57 + 1.90 * 0.86 + 1.60 * 1 + 1 + 1) = 188.32228360023467
p2 = (478.26 * 1.60 * 1 + 157.89 * 1.90 * 0.86 + 133.33 * 1.20 * 0.57) / max_coefficients = 75.0013468013468
score = 188.32228360023467 * 0.5 + 75.0013468013468 * 0.5 = 131.66181520079073
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-03 | 292 -> 291 | 131.41 -> 131.66 | |
| 2026-04-29 | 292 | 131.40 -> 131.41 |
Martenho's New Year's Eve tournament: 71% -> 57% |
| 2026-04-19 | 281 -> 292 | 131.40 | |
| 2026-04-11 | 280 -> 281 | 131.40 | |
| 2026-04-09 | 281 -> 280 | 131.40 | |
| 2026-04-05 | 275 -> 281 | 131.40 | |
| 2026-04-04 | 276 -> 275 | 131.40 | |
| 2026-03-30 | 277 -> 276 | 131.40 | |
| 2026-03-23 | 277 | 132.22 -> 131.40 |
Martenho's Spring tournament: 100% -> 86% |
| 2026-03-21 | 269 -> 277 | 132.22 |
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 | 86% | 1.90 | CRR | Martenho's Spring tournament | Ufa | |
| 3 | 133 |
|
14/16 | 57% | 1.20 | CRR | Martenho's New Year's Eve tournament | Ufa |