Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date March 14, 2025 (latest changes March 10, 2025).
163 place (209.50).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (678.16 * 3.75 * 0.29 + 252.34 * 4 * 0.43 + 102.80 * 4.60 * 1 + 212.77 * 2.80 * 1 + 202.53 * 3.65 * 1 + 354.84 * 2.40 * 1) / (3.75 * 0.29 + 4 * 0.43 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 2.40 * 1) = 235.20035230840537
p2 = (354.84 * 2.40 * 1 + 202.53 * 3.65 * 1 + 678.16 * 3.75 * 0.29 + 212.77 * 2.80 * 1) / max_coefficients = 183.794952681388
score = 235.20035230840537 * 0.5 + 183.794952681388 * 0.5 = 209.49765249489667
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-03-03 | 163 | 209.79 -> 209.50 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-03-02 | 165 -> 163 | 191.20 -> 209.79 |
Riichi Maslenitsa (shrovetide): 0% -> 100% |
| 2025-02-16 | 153 -> 165 | 191.20 | |
| 2025-02-11 | 149 -> 153 | 210.95 -> 191.20 |
Money can not buy tenpai: 43% -> 29% |
| 2025-02-02 | 142 -> 149 | 210.95 | |
| 2025-01-26 | 134 -> 142 | 210.95 | |
| 2025-01-07 | 130 -> 134 | 210.95 | |
| 2025-01-03 | 130 | 215.87 -> 210.95 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-11 | 123 -> 130 | 234.75 -> 215.87 |
Money can not buy tenpai: 57% -> 43% |
| 2024-11-06 | 131 -> 123 | 234.75 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 355 |
|
21/32 | 100% | 2.40 | RR | Riichi Maslenitsa (shrovetide) |
| 2 | 203 |
|
64/80 | 100% | 3.65 | RR | Riichi over Volga |
| 3 | 213 |
|
38/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 4 | 103 |
|
97/108 | 100% | 4.60 | RR | X Russian Championship |
| 5 | 252 |
|
81/108 | 43% | 4.00 | RR | SPB Riichi Open 2023 |
| 6 | 678 |
|
29/88 | 29% | 3.75 | RR | Money can not buy tenpai |