Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date June 9, 2024 (latest changes June 9, 2024).
102 place (270.95).
how we calculated rating score
max_coefficients = (4.60 * 1 + 4 * 1 + 3.75 * 1 + 3.05 * 1) = 15.399999999999999
p1 = (678.16 * 3.75 * 1 + 252.34 * 4 * 1 + 102.80 * 4.60 * 1 + 0 + 0) / (3.75 * 1 + 4 * 1 + 4.60 * 1 + 1 + 1) = 280.5121951219512
p2 = (678.16 * 3.75 * 1 + 252.34 * 4 * 1 + 102.80 * 4.60 * 1) / max_coefficients = 261.3863636363637
score = 280.5121951219512 * 0.5 + 261.3863636363637 * 0.5 = 270.9492793791575
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 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 | |
| 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 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 103 |
|
97/108 | 100% | 4.60 | RR | X Russian Championship |
| 2 | 252 |
|
81/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 3 | 678 |
|
29/88 | 100% | 3.75 | RR | Money can not buy tenpai |