Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date May 5, 2026 (latest changes May 3, 2026).
110 place (372.44).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.90 * 1 + 3.45 * 1 + 3.40 * 1) = 14.85
p1 = (102.80 * 4.60 * 0.14 + 212.77 * 2.80 * 0.29 + 202.53 * 3.65 * 0.29 + 354.84 * 2.40 * 0.71 + 716.42 * 4.10 * 1) / (4.60 * 0.14 + 2.80 * 0.29 + 3.65 * 0.29 + 2.40 * 0.71 + 4.10 * 1) = 480.4421231774897
p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 0.71 + 202.53 * 3.65 * 0.29 + 212.77 * 2.80 * 0.29) / max_coefficients = 264.4457912457912
score = 480.4421231774897 * 0.5 + 264.4457912457912 * 0.5 = 372.44395721164045
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-05-03 | 108 -> 110 | 371.56 -> 372.44 | |
| 2026-05-02 | 107 -> 108 | 373.14 -> 371.56 |
Riichi Maslenitsa (shrovetide): 86% -> 71% |
| 2026-05-01 | 109 -> 107 | 373.14 | |
| 2026-04-26 | 110 -> 109 | 373.14 | |
| 2026-04-19 | 109 -> 110 | 373.14 | |
| 2026-04-16 | 110 -> 109 | 373.14 | |
| 2026-04-13 | 109 -> 110 | 373.14 | |
| 2026-04-11 | 108 -> 109 | 373.14 | |
| 2026-04-09 | 109 -> 108 | 373.14 | |
| 2026-04-05 | 108 -> 109 | 373.14 |
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 | 71% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
| 3 | 203 |
|
64/80 | 29% | 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 | 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 |