Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date March 2, 2026 (latest changes March 2, 2026).
123 place (355.48).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (102.80 * 4.60 * 0.29 + 212.77 * 2.80 * 0.43 + 202.53 * 3.65 * 0.43 + 354.84 * 2.40 * 0.86 + 716.42 * 4.10 * 1) / (4.60 * 0.29 + 2.80 * 0.43 + 3.65 * 0.43 + 2.40 * 0.86 + 4.10 * 1) = 427.3774318001745
p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 0.86 + 202.53 * 3.65 * 0.43 + 212.77 * 2.80 * 0.43) / max_coefficients = 283.5725752508361
score = 427.3774318001745 * 0.5 + 283.5725752508361 * 0.5 = 355.4750035255053
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-03-02 | 122 -> 123 | 358.37 -> 355.48 |
Riichi Maslenitsa (shrovetide): 100% -> 86% |
| 2026-03-01 | 123 -> 122 | 358.37 | |
| 2026-02-23 | 117 -> 123 | 358.37 | |
| 2026-02-16 | 119 -> 117 | 358.37 | |
| 2026-02-13 | 118 -> 119 | 358.37 | |
| 2026-02-09 | 119 -> 118 | 358.37 | |
| 2026-02-08 | 115 -> 119 | 358.37 | |
| 2026-02-04 | 118 -> 115 | 356.68 -> 358.37 |
Riichi over Volga: 57% -> 43% |
| 2026-02-02 | 117 -> 118 | 356.68 | |
| 2026-01-25 | 114 -> 117 | 356.68 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 716 |
|
20/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
| 2 | 355 |
|
21/32 | 86% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
| 3 | 203 |
|
64/80 | 43% | 3.65 | RR | Riichi over Volga | Samara | |
| 4 | 213 |
|
38/48 | 43% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 5 | 103 |
|
97/108 | 29% | 4.60 | RR | X Russian Championship | Perm | |
| 6 | 252 |
|
81/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 7 | 678 |
|
29/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |