Shmatko Aleksandra
From Samara, Russia
Internal rating (RR)
Rating date Dec. 10, 2025 (latest changes Dec. 9, 2025).
86 place (440.08).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (632.91 * 3.65 * 0.57 + 280.90 * 3.75 * 0.86 + 285.71 * 2.60 * 1 + 857.14 * 3.50 * 1 + 0) / (3.65 * 0.57 + 3.75 * 0.86 + 2.60 * 1 + 3.50 * 1 + 1) = 481.11592707424796
p2 = (857.14 * 3.50 * 1 + 632.91 * 3.65 * 0.57 + 280.90 * 3.75 * 0.86 + 285.71 * 2.60 * 1) / max_coefficients = 399.04414715719065
score = 481.11592707424796 * 0.5 + 399.04414715719065 * 0.5 = 440.0800371157193
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-12-07 | 85 -> 86 | 440.08 | |
| 2025-12-04 | 79 -> 85 | 454.18 -> 440.08 |
Riichi over Volga: 71% -> 57% |
| 2025-11-30 | 80 -> 79 | 454.18 | |
| 2025-11-14 | 81 -> 80 | 454.18 | |
| 2025-11-12 | 87 -> 81 | 454.18 | |
| 2025-11-10 | 88 -> 87 | 454.18 | |
| 2025-11-04 | 81 -> 88 | 463.75 -> 454.18 | |
| 2025-11-01 | 82 -> 81 | 462.99 -> 463.75 | |
| 2025-10-13 | 81 -> 82 | 457.30 -> 462.99 |
Moscow Riichi 2024: 100% -> 86% |
| 2025-10-09 | 82 -> 81 | 457.30 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 857 |
|
11/71 | 100% | 3.50 | RR | Riichi over The Volga 2025 | Samara | |
| 2 | 286 |
|
31/43 | 100% | 2.60 | RR | Riichi On Ice | Samara | |
| 3 | 281 |
|
65/90 | 86% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 4 | 633 |
|
30/80 | 57% | 3.65 | RR | Riichi over Volga | Samara |