Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date Jan. 20, 2024 (latest changes Jan. 20, 2024).
68 place (307.49).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.71 + 4.05 * 0.43) = 12.485890000000001
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 = 284.5171629735645
score = 330.46046511627907 * 0.5 + 284.5171629735645 * 0.5 = 307.4888140449218
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
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 | |
2023-11-28 | 82 -> 76 | 295.22 | |
2023-11-20 | 83 -> 82 | 295.22 | |
2023-11-06 | 89 -> 83 | 289.75 -> 295.22 | |
2023-10-19 | 90 -> 89 | 289.75 | |
2023-10-12 | 91 -> 90 | 284.90 -> 289.75 | |
2023-09-28 | 92 -> 91 | 284.90 |
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 |