Petrushchenko Sergey
From Moscow, Russia
EMA: 15990288
Internal rating (RR)
Rating date May 31, 2025 (latest changes May 30, 2025).
21 place (690.56).
how we calculated rating score
max_coefficients = (4.60 * 0.86 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.19266
p1 = (172.41 * 3.75 * 0.14 + 775.70 * 4 * 0.29 + 607.84 * 3.05 * 0.71 + 86.96 * 2.10 * 0.71 + 490.20 * 3.05 * 1 + 898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 709.68 * 3.10 * 1 + 523.81 * 2.60 * 1 + 764.71 * 3.05 * 1 + 372.88 * 3.25 * 1 + 677.42 * 2.40 * 1 + 514.29 * 1.90 * 1) / (3.75 * 0.14 + 4 * 0.29 + 3.05 * 0.71 + 2.10 * 0.71 + 3.05 * 1 + 3.65 * 1 + 3.85 * 1 + 3.75 * 1 + 3.10 * 1 + 2.60 * 1 + 3.05 * 1 + 3.25 * 1 + 2.40 * 1 + 1.90 * 1) = 631.2469894864245
p2 = (898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 764.71 * 3.05 * 1) / max_coefficients = 749.8739522901191
score = 631.2469894864245 * 0.5 + 749.8739522901191 * 0.5 = 690.5604708882718
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-05-30 | 21 | 688.31 -> 690.56 |
Seihoku spring tournament 2024: 86% -> 71% |
2025-05-12 | 24 -> 21 | 672.76 -> 688.31 |
X Russian Championship: 100% -> 86% |
2025-05-10 | 24 | 672.65 -> 672.76 |
Agari Spring Tournament 2024: 86% -> 71% |
2025-05-03 | 17 -> 24 | 687.54 -> 672.65 |
SPB Riichi Open 2023: 43% -> 29% Riichi over The Volga 2025: 0% -> 100% |
2025-04-26 | 19 -> 17 | 676.87 -> 687.54 |
Seihoku spring tournament 2025: 0% -> 100% |
2025-04-11 | 19 | 673.42 -> 676.87 |
Money can not buy tenpai: 29% -> 14% |
2025-03-30 | 19 | 671.18 -> 673.42 |
Seihoku spring tournament 2024: 100% -> 86% |
2025-03-10 | 21 -> 19 | 671.08 -> 671.18 |
Agari Spring Tournament 2024: 100% -> 86% |
2025-03-03 | 20 -> 21 | 672.25 -> 671.08 |
SPB Riichi Open 2023: 57% -> 43% |
2025-03-02 | 22 -> 20 | 670.47 -> 672.25 |
Riichi Maslenitsa (shrovetide): 0% -> 100% |