Astafev Mikhail
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date May 6, 2024 (latest changes May 6, 2024).
47 place (471.21).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 3.05 * 1 + 2.90 * 1) = 13.700000000000001
p1 = (678.16 * 3.75 * 1 + 368.42 * 2.10 * 1 + 252.34 * 4 * 1 + 592.59 * 2.30 * 1 + 629.63 * 2.30 * 1 + 333.33 * 1.60 * 1) / (3.75 * 1 + 2.10 * 1 + 4 * 1 + 2.30 * 1 + 2.30 * 1 + 1.60 * 1) = 477.91713395638624
p2 = (678.16 * 3.75 * 1 + 629.63 * 2.30 * 1 + 592.59 * 2.30 * 1 + 252.34 * 4 * 1) / max_coefficients = 464.4934306569343
score = 477.91713395638624 * 0.5 + 464.4934306569343 * 0.5 = 471.20528230666025
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-05-06 | 48 -> 47 | 471.21 | |
| 2024-05-05 | 47 -> 48 | 479.21 -> 471.21 |
Akademgorodok: Riichi Mahjong Tournament 2024: 0% -> 100% |
| 2024-03-30 | 45 -> 47 | 479.21 | |
| 2024-03-10 | 38 -> 45 | 490.78 -> 479.21 | |
| 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 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 333 |
|
11/16 | 100% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 |
| 2 | 630 |
|
11/28 | 100% | 2.30 | CRR | Chasing Kan |
| 3 | 593 |
|
12/28 | 100% | 2.30 | CRR | Finding Dora |
| 4 | 252 |
|
81/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 368 |
|
13/20 | 100% | 2.10 | CRR | 13 tiles until tempai |
| 6 | 678 |
|
29/88 | 100% | 3.75 | RR | Money can not buy tenpai |