Astafev Mikhail
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date March 6, 2024 (latest changes March 6, 2024).
38 place (490.78).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 2.90 * 1 + 4.20 * 0.57) = 13.04988
p1 = (368.42 * 2.10 * 1 + 592.59 * 2.30 * 1 + 629.63 * 2.30 * 1 + 678.16 * 3.75 * 1 + 252.34 * 4 * 1) / (2.10 * 1 + 2.30 * 1 + 2.30 * 1 + 3.75 * 1 + 4 * 1) = 493.92664359861595
p2 = (678.16 * 3.75 * 1 + 629.63 * 2.30 * 1 + 592.59 * 2.30 * 1 + 252.34 * 4 * 1) / max_coefficients = 487.63360276109825
score = 493.92664359861595 * 0.5 + 487.63360276109825 * 0.5 = 490.7801231798571
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-03-06 | 40 -> 38 | 480.06 -> 490.78 | |
| 2024-02-25 | 56 -> 40 | 424.71 -> 480.06 |
Chasing Kan: 0% -> 100% |
| 2024-02-12 | 58 -> 56 | 424.71 | |
| 2024-01-20 | 59 -> 58 | 424.71 | |
| 2024-01-06 | 60 -> 59 | 415.93 -> 424.71 | |
| 2023-12-19 | 61 -> 60 | 415.93 | |
| 2023-12-18 | 62 -> 61 | 415.93 | |
| 2023-12-12 | 64 -> 62 | 415.93 | |
| 2023-11-28 | 66 -> 64 | 415.93 | |
| 2023-11-26 | 61 -> 66 | 417.35 -> 415.93 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 630 |
|
11/28 | 100% | 2.30 | CRR | Chasing Kan |
| 2 | 593 |
|
12/28 | 100% | 2.30 | CRR | Finding Dora |
| 3 | 252 |
|
81/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 4 | 368 |
|
13/20 | 100% | 2.10 | CRR | 13 tiles until tempai |
| 5 | 678 |
|
29/88 | 100% | 3.75 | RR | Money can not buy tenpai |