Astafev Mikhail
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date June 29, 2026 (latest changes June 29, 2026).
137 place (387.54).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 4.10 * 0.86 + 3.45 * 1) = 15.574109999999997
p1 = (212.77 * 2.80 * 0.14 + 202.53 * 3.65 * 0.14 + 354.84 * 2.40 * 0.71 + 716.42 * 4.10 * 0.86 + 542.86 * 2.50 * 1 + 209.79 * 4.71 * 1) / (2.80 * 0.14 + 3.65 * 0.14 + 2.40 * 0.71 + 4.10 * 0.86 + 2.50 * 1 + 4.71 * 1) = 423.79062786416455
p2 = (716.42 * 4.10 * 0.86 + 542.86 * 2.50 * 1 + 209.79 * 4.71 * 1 + 354.84 * 2.40 * 0.71) / max_coefficients = 351.29647857887227
score = 423.79062786416455 * 0.5 + 351.29647857887227 * 0.5 = 387.54355322151844
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-06-29 | 138 -> 137 | 387.54 | |
| 2026-06-27 | 139 -> 138 | 387.54 | |
| 2026-06-15 | 130 -> 139 | 400.31 -> 387.54 |
13 bloody tiles: 100% -> 86% |
| 2026-06-14 | 98 -> 130 | 444.38 -> 400.31 |
XII Russian Championship: 0% -> 100% |
| 2026-06-13 | 101 -> 98 | 444.38 | |
| 2026-06-04 | 103 -> 101 | 438.61 -> 444.38 |
Riichi over Volga: 29% -> 14% |
| 2026-06-02 | 104 -> 103 | 438.61 | |
| 2026-05-19 | 105 -> 104 | 438.61 | |
| 2026-05-17 | 104 -> 105 | 438.61 | |
| 2026-05-14 | 106 -> 104 | 432.31 -> 438.61 |
Guardian of the Winds: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 210 |
|
114/144 | 100% | 4.71 | RR | XII Russian Championship | Samara | |
| 2 | 543 |
|
17/36 | 100% | 2.50 | CRR | Akademgorodok Riichi Mahjong Tournament 2026 | Novosibirsk | |
| 3 | 716 |
|
20/68 | 86% | 4.10 | RR | 13 bloody tiles | Perm | |
| 4 | 355 |
|
21/32 | 71% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
| 5 | 203 |
|
64/80 | 14% | 3.65 | RR | Riichi over Volga | Samara | |
| 6 | 213 |
|
38/48 | 14% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 7 | 103 |
|
97/108 | 0% | 4.60 | RR | X Russian Championship | Perm | |
| 8 | 333 |
|
11/16 | 0% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk | |
| 9 | 630 |
|
11/28 | 0% | 2.30 | CRR | Chasing Kan | Yekaterinburg | |
| 10 | 593 |
|
12/28 | 0% | 2.30 | CRR | Finding Dora | Yekaterinburg | |
| 11 | 252 |
|
81/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 12 | 368 |
|
13/20 | 0% | 2.10 | CRR | 13 tiles until tempai | Yekaterinburg | |
| 13 | 678 |
|
29/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |