Astafev Mikhail
From Yekaterinburg, Russia
Internal rating (RR)
Rating date Aug. 8, 2025 (latest changes Aug. 4, 2025).
130 place (332.72).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (252.34 * 4 * 0.14 + 102.80 * 4.60 * 0.71 + 212.77 * 2.80 * 0.86 + 202.53 * 3.65 * 0.86 + 354.84 * 2.40 * 1 + 716.42 * 4.10 * 1) / (4 * 0.14 + 4.60 * 0.71 + 2.80 * 0.86 + 3.65 * 0.86 + 2.40 * 1 + 4.10 * 1) = 340.8832171122725
p2 = (716.42 * 4.10 * 1 + 354.84 * 2.40 * 1 + 202.53 * 3.65 * 0.86 + 212.77 * 2.80 * 0.86) / max_coefficients = 324.5480263157895
score = 340.8832171122725 * 0.5 + 324.5480263157895 * 0.5 = 332.71562171403104
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-08-04 | 129 -> 130 | 332.37 -> 332.72 |
Riichi over Volga: 100% -> 86% |
2025-08-03 | 127 -> 129 | 332.37 | |
2025-07-30 | 126 -> 127 | 332.37 | |
2025-07-14 | 125 -> 126 | 333.67 -> 332.37 |
Guardian of the Winds: 100% -> 86% |
2025-07-13 | 122 -> 125 | 333.67 | |
2025-07-12 | 125 -> 122 | 326.21 -> 333.67 |
X Russian Championship: 86% -> 71% |
2025-07-03 | 125 | 325.06 -> 326.21 |
SPB Riichi Open 2023: 29% -> 14% |
2025-06-15 | 163 -> 125 | 188.64 -> 325.06 |
13 bloody tiles: 0% -> 100% |
2025-06-11 | 168 -> 163 | 197.37 -> 188.64 |
Money can not buy tenpai: 14% -> 0% |
2025-05-12 | 170 -> 168 | 193.33 -> 197.37 |
X Russian Championship: 100% -> 86% |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
---|---|---|---|---|---|---|---|---|---|
1 | 716 |
|
20/68 | 100% | 4.10 | RR | 13 bloody tiles | Perm | |
2 | 355 |
|
21/32 | 100% | 2.40 | RR | Riichi Maslenitsa (shrovetide) | Yekaterinburg | |
3 | 203 |
|
64/80 | 86% | 3.65 | RR | Riichi over Volga | Samara | |
4 | 213 |
|
38/48 | 86% | 2.80 | RR | Guardian of the Winds | Yekaterinburg | |
5 | 103 |
|
97/108 | 71% | 4.60 | RR | X Russian Championship | Perm | |
6 | 252 |
|
81/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
7 | 678 |
|
29/88 | 0% | 3.75 | RR | Money can not buy tenpai | Perm |