Astafev Mikhail
From Yekaterinburg, Russia
Common russian riichi rating (CRR)
Rating date March 15, 2026 (latest changes March 15, 2026).
129 place (367.38).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.50 * 1 + 3.45 * 1) = 14.95
p1 = (333.33 * 1.60 * 0.14 + 102.80 * 4.60 * 0.14 + 212.77 * 2.80 * 0.29 + 202.53 * 3.65 * 0.43 + 354.84 * 2.40 * 0.86 + 716.42 * 4.10 * 1) / (1.60 * 0.14 + 4.60 * 0.14 + 2.80 * 0.29 + 3.65 * 0.43 + 2.40 * 0.86 + 4.10 * 1) = 456.88221043713594
p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 0.86 + 202.53 * 3.65 * 0.43 + 212.77 * 2.80 * 0.29) / max_coefficients = 277.8775919732442
score = 456.88221043713594 * 0.5 + 277.8775919732442 * 0.5 = 367.3799012051901
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-03-14 | 131 -> 129 | 365.25 -> 367.38 |
Guardian of the Winds: 43% -> 29% |
| 2026-03-12 | 137 -> 131 | 354.45 -> 365.25 |
X Russian Championship: 29% -> 14% |
| 2026-03-10 | 138 -> 137 | 354.45 | |
| 2026-03-07 | 137 -> 138 | 354.45 | |
| 2026-03-05 | 137 | 353.46 -> 354.45 |
Akademgorodok: Riichi Mahjong Tournament 2024: 29% -> 14% |
| 2026-03-04 | 138 -> 137 | 353.46 | |
| 2026-03-02 | 137 -> 138 | 356.47 -> 353.46 |
Riichi Maslenitsa (shrovetide): 100% -> 86% |
| 2026-03-01 | 138 -> 137 | 356.47 | |
| 2026-02-27 | 137 -> 138 | 356.47 | |
| 2026-02-25 | 137 | 359.48 -> 356.47 |
Chasing Kan: 14% -> 0% |
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 | 29% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
| 5 | 103 |
|
97/108 | 14% | 4.60 | RR | X Russian Championship | Perm | |
| 6 | 333 |
|
11/16 | 14% | 1.60 | CRR | Akademgorodok: Riichi Mahjong Tournament 2024 | Novosibirsk | |
| 7 | 630 |
|
11/28 | 0% | 2.30 | CRR | Chasing Kan | Yekaterinburg | |
| 8 | 593 |
|
12/28 | 0% | 2.30 | CRR | Finding Dora | Yekaterinburg | |
| 9 | 252 |
|
81/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 10 | 368 |
|
13/20 | 0% | 2.10 | CRR | 13 tiles until tempai | Yekaterinburg | |
| 11 | 678 |
|
29/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |