Abakumov Artur
From Tyumen, Russia
Common russian riichi rating (CRR)
Rating date Jan. 31, 2026 (latest changes Jan. 30, 2026).
302 place (44.14).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (111.11 * 2.30 * 0.14 + 217.39 * 2.20 * 0.57 + 0 + 0 + 0) / (2.30 * 0.14 + 2.20 * 0.57 + 1 + 1 + 1) = 67.55710625306655
p2 = (217.39 * 2.20 * 0.57 + 111.11 * 2.30 * 0.14) / max_coefficients = 20.72240802675585
score = 67.55710625306655 * 0.5 + 20.72240802675585 * 0.5 = 44.1397571399112
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-01-30 | 303 -> 302 | 44.14 | |
| 2026-01-26 | 304 -> 303 | 44.14 | |
| 2026-01-25 | 299 -> 304 | 44.14 | |
| 2026-01-15 | 296 -> 299 | 51.23 -> 44.14 |
Tails, money, two renchans: 71% -> 57% |
| 2026-01-10 | 297 -> 296 | 51.23 | |
| 2026-01-07 | 295 -> 297 | 51.23 | |
| 2026-01-03 | 291 -> 295 | 51.23 | |
| 2025-12-27 | 286 -> 291 | 51.23 | |
| 2025-12-25 | 284 -> 286 | 53.52 -> 51.23 |
Chasing Kan: 29% -> 14% |
| 2025-12-09 | 285 -> 284 | 53.52 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 217 |
|
19/24 | 57% | 2.20 | CRR | Tails, money, two renchans | Tyumen | |
| 2 | 111 |
|
25/28 | 14% | 2.30 | CRR | Chasing Kan | Yekaterinburg |