Tsiporin Aleksandr
From Moscow, Russia
Common russian riichi rating (CRR)
Rating date Feb. 22, 2026 (latest changes Feb. 16, 2026).
23 place (671.18).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (258.43 * 3.75 * 0.57 + 452.38 * 2.60 * 0.86 + 745.10 * 3.05 * 0.86 + 525.42 * 3.25 * 0.86 + 210.53 * 1.50 * 1 + 597.01 * 4.10 * 1 + 961.04 * 3.45 * 1 + 859.65 * 3.90 * 1 + 314.29 * 2.50 * 1) / (3.75 * 0.57 + 2.60 * 0.86 + 3.05 * 0.86 + 3.25 * 0.86 + 1.50 * 1 + 4.10 * 1 + 3.45 * 1 + 3.90 * 1 + 2.50 * 1) = 602.3062582124219
p2 = (859.65 * 3.90 * 1 + 961.04 * 3.45 * 1 + 597.01 * 4.10 * 1 + 745.10 * 3.05 * 0.86) / max_coefficients = 740.0515050167224
score = 602.3062582124219 * 0.5 + 740.0515050167224 * 0.5 = 671.1788816145722
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-02-16 | 24 -> 23 | 670.48 -> 671.18 |
White Wolf Cup: 100% -> 86% |
| 2026-02-13 | 26 -> 24 | 666.98 -> 670.48 |
Moscow Riichi 2024: 71% -> 57% |
| 2026-02-08 | 28 -> 26 | 660.63 -> 666.98 |
One tsumo until spring: 0% -> 100% |
| 2026-02-02 | 25 -> 28 | 672.84 -> 660.63 |
Agari Winter Tournament 2025: 100% -> 86% |
| 2026-02-01 | 27 -> 25 | 672.84 | |
| 2026-01-26 | 29 -> 27 | 671.93 -> 672.84 |
Riichi On Ice: 100% -> 86% |
| 2026-01-25 | 25 -> 29 | 671.93 | |
| 2026-01-12 | 24 -> 25 | 671.93 | |
| 2026-01-07 | 26 -> 24 | 671.93 | |
| 2026-01-01 | 26 | 667.33 -> 671.93 |
SPB Riichi Open 2024: 71% -> 57% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 314 |
|
25/36 | 100% | 2.50 | RR | One tsumo until spring | Yekaterinburg | |
| 2 | 860 |
|
9/58 | 100% | 3.90 | RR | XI Russian Championship | Moscow | |
| 3 | 961 |
|
4/78 | 100% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 4 | 597 |
|
28/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 5 | 211 |
|
16/20 | 100% | 1.50 | CRR | HaTiKo | Korolyov | |
| 6 | 525 |
|
29/60 | 86% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 7 | 745 |
|
14/52 | 86% | 3.05 | RR | Agari Winter Tournament 2025 | Moscow | |
| 8 | 452 |
|
24/43 | 86% | 2.60 | RR | Riichi On Ice | Samara | |
| 9 | 258 |
|
67/90 | 57% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 10 | 126 |
|
84/96 | 57% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |