Saifulin Andrei
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date June 29, 2026 (latest changes June 29, 2026).
86 place (500.55).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (936.17 * 2.80 * 0.14 + 709.68 * 2.40 * 0.71 + 914.29 * 2.50 * 1 + 496.50 * 4.71 * 1 + 0) / (2.80 * 0.14 + 2.40 * 0.71 + 2.50 * 1 + 4.71 * 1 + 1) = 602.0113439566699
p2 = (496.50 * 4.71 * 1 + 914.29 * 2.50 * 1 + 709.68 * 2.40 * 0.71 + 936.17 * 2.80 * 0.14) / max_coefficients = 399.08733147512123
score = 602.0113439566699 * 0.5 + 399.08733147512123 * 0.5 = 500.54933771589555
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-06-27 | 87 -> 86 | 500.55 | |
| 2026-06-15 | 88 -> 87 | 493.31 -> 500.55 | |
| 2026-06-14 | 108 -> 88 | 423.60 -> 493.31 |
XII Russian Championship: 0% -> 100% |
| 2026-06-09 | 109 -> 108 | 423.60 | |
| 2026-05-19 | 110 -> 109 | 423.60 | |
| 2026-05-17 | 108 -> 110 | 423.60 | |
| 2026-05-14 | 101 -> 108 | 446.18 -> 423.60 |
Guardian of the Winds: 29% -> 14% |
| 2026-05-12 | 102 -> 101 | 446.18 | |
| 2026-05-03 | 104 -> 102 | 445.22 -> 446.18 | |
| 2026-05-02 | 96 -> 104 | 455.77 -> 445.22 |
Riichi Maslenitsa (shrovetide): 86% -> 71% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 497 |
|
73/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 2 | 914 |
|
4/36 | 100% | 2.50 | RR | One tsumo until spring | Yekaterinburg | |
| 3 | 710 |
|
10/32 | 71% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
| 4 | 936 |
|
4/48 | 14% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 5 | 704 |
|
9/28 | 0% | 2.30 | CRR | Chasing Kan | Yekaterinburg | |
| 6 | 370 |
|
18/28 | 0% | 2.30 | CRR | Finding Dora | Yekaterinburg | |
| 7 | 737 |
|
6/20 | 0% | 2.10 | CRR | 13 tiles until tempai | Yekaterinburg |