Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date Sept. 3, 2024 (latest changes Sept. 3, 2024).
118 place (260.17).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.65 * 1 + 4 * 0.86) = 15.5284
p1 = (678.16 * 3.75 * 0.71 + 252.34 * 4 * 0.86 + 102.80 * 4.60 * 1 + 212.77 * 2.80 * 1 + 202.53 * 3.65 * 1) / (3.75 * 0.71 + 4 * 0.86 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1) = 261.6729881783118
p2 = (678.16 * 3.75 * 0.71 + 252.34 * 4 * 0.86 + 202.53 * 3.65 * 1 + 212.77 * 2.80 * 1) / max_coefficients = 258.6634811055872
score = 261.6729881783118 * 0.5 + 258.6634811055872 * 0.5 = 260.16823464194954
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-09-03 | 118 | 259.91 -> 260.17 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 107 -> 118 | 266.66 -> 259.91 | |
| 2024-08-11 | 104 -> 107 | 283.07 -> 266.66 |
Money can not buy tenpai: 86% -> 71% |
| 2024-08-04 | 101 -> 104 | 279.56 -> 283.07 |
Riichi over Volga: 0% -> 100% |
| 2024-07-14 | 99 -> 101 | 255.72 -> 279.56 |
Guardian of the Winds: 0% -> 100% |
| 2024-06-11 | 102 -> 99 | 270.95 -> 255.72 |
Money can not buy tenpai: 100% -> 86% |
| 2024-06-09 | 92 -> 102 | 270.95 | |
| 2024-05-12 | 68 -> 92 | 302.92 -> 270.95 |
X Russian Championship: 0% -> 100% |
| 2024-05-06 | 69 -> 68 | 299.79 -> 302.92 | |
| 2024-04-12 | 71 -> 69 | 299.79 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 203 |
|
64/80 | 100% | 3.65 | RR | Riichi over Volga |
| 2 | 213 |
|
38/48 | 100% | 2.80 | RR | Guardian of the Winds |
| 3 | 103 |
|
97/108 | 100% | 4.60 | RR | X Russian Championship |
| 4 | 252 |
|
81/108 | 86% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 678 |
|
29/88 | 71% | 3.75 | RR | Money can not buy tenpai |