Astafev Mikhail
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date Dec. 11, 2024 (latest changes Dec. 11, 2024).
129 place (300.19).
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 * 0.43 + 252.34 * 4 * 0.71 + 629.63 * 2.30 * 1 + 333.33 * 1.60 * 1 + 102.80 * 4.60 * 1 + 212.77 * 2.80 * 1 + 202.53 * 3.65 * 1 + 368.42 * 2.10 * 0.71 + 592.59 * 2.30 * 0.86) / (3.75 * 0.43 + 4 * 0.71 + 2.30 * 1 + 1.60 * 1 + 4.60 * 1 + 2.80 * 1 + 3.65 * 1 + 2.10 * 0.71 + 2.30 * 0.86) = 319.8990990487119
p2 = (629.63 * 2.30 * 1 + 592.59 * 2.30 * 0.86 + 678.16 * 3.75 * 0.43 + 202.53 * 3.65 * 1) / max_coefficients = 280.47697160883286
score = 319.8990990487119 * 0.5 + 280.47697160883286 * 0.5 = 300.18803532877234
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-12-11 | 126 -> 129 | 315.74 -> 300.19 |
Money can not buy tenpai: 57% -> 43% |
| 2024-11-05 | 126 | 323.71 -> 315.74 |
Finding Dora: 100% -> 86% |
| 2024-11-03 | 127 -> 126 | 326.75 -> 323.71 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-27 | 127 | 326.99 -> 326.75 |
13 tiles until tempai: 86% -> 71% |
| 2024-10-13 | 119 -> 127 | 330.34 -> 326.99 | |
| 2024-10-11 | 116 -> 119 | 345.74 -> 330.34 |
Money can not buy tenpai: 71% -> 57% |
| 2024-09-15 | 114 -> 116 | 345.74 | |
| 2024-09-06 | 115 -> 114 | 345.74 | |
| 2024-09-03 | 116 -> 115 | 342.99 -> 345.74 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 102 -> 116 | 352.15 -> 342.99 |
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 | 333 |
|
11/16 | 100% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 |
| 5 | 630 |
|
11/28 | 100% | 2.30 | CRR | Chasing Kan |
| 6 | 593 |
|
12/28 | 86% | 2.30 | CRR | Finding Dora |
| 7 | 252 |
|
81/108 | 71% | 4.00 | RR | SPB Riichi Open 2023 |
| 8 | 368 |
|
13/20 | 71% | 2.10 | CRR | 13 tiles until tempai |
| 9 | 678 |
|
29/88 | 43% | 3.75 | RR | Money can not buy tenpai |