Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date April 12, 2024 (latest changes April 12, 2024).
69 place (299.79).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 4.20 * 0.57) = 13.19988
p1 = (678.16 * 3.75 * 1 + 252.34 * 4 * 1 + 0 + 0 + 0) / (3.75 * 1 + 4 * 1 + 1 + 1 + 1) = 330.46046511627907
p2 = (678.16 * 3.75 * 1 + 252.34 * 4 * 1) / max_coefficients = 269.127446613151
score = 330.46046511627907 * 0.5 + 269.127446613151 * 0.5 = 299.79395586471503
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-04-12 | 71 -> 69 | 299.79 | |
| 2024-03-30 | 66 -> 71 | 299.79 | |
| 2024-03-20 | 73 -> 66 | 299.79 | |
| 2024-03-10 | 61 -> 73 | 322.32 -> 299.79 | |
| 2024-03-06 | 65 -> 61 | 314.40 -> 322.32 | |
| 2024-02-12 | 68 -> 65 | 307.49 -> 314.40 | |
| 2024-01-20 | 70 -> 68 | 307.49 | |
| 2024-01-06 | 70 | 300.97 -> 307.49 | |
| 2023-12-19 | 73 -> 70 | 300.97 | |
| 2023-12-12 | 76 -> 73 | 295.22 -> 300.97 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 252 |
|
81/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 2 | 678 |
|
29/88 | 100% | 3.75 | RR | Money can not buy tenpai |