Petrushchenko Sergey
From Moscow, Russia
EMA: 15990288
Internal rating (RR)
Rating date Jan. 3, 2025 (latest changes Jan. 3, 2025).
23 place (625.52).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (172.41 * 3.75 * 0.43 + 775.70 * 4 * 0.57 + 86.96 * 2.10 * 1 + 233.64 * 4.60 * 1 + 490.20 * 3.05 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 898.73 * 3.65 * 1 + 607.84 * 3.05 * 1) / (3.75 * 0.43 + 4 * 0.57 + 2.10 * 1 + 4.60 * 1 + 3.05 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1 + 3.05 * 1) = 562.4580169882457
p2 = (898.73 * 3.65 * 1 + 778.95 * 3.85 * 1 + 741.57 * 3.75 * 1 + 607.84 * 3.05 * 1) / max_coefficients = 688.589905362776
score = 562.4580169882457 * 0.5 + 688.589905362776 * 0.5 = 625.5239611755109
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2025-01-03 | 23 | 639.09 -> 625.52 |
SPB Riichi Open 2023: 71% -> 57% |
2024-12-11 | 23 | 635.46 -> 639.09 |
Money can not buy tenpai: 57% -> 43% |
2024-11-06 | 18 -> 23 | 669.53 -> 635.46 |
IX Russian Riichi Championship: 14% -> 0% |
2024-11-03 | 17 -> 18 | 685.16 -> 669.53 |
SPB Riichi Open 2023: 86% -> 71% |
2024-10-13 | 25 -> 17 | 620.62 -> 685.16 |
Moscow Riichi 2024: 0% -> 100% |
2024-10-11 | 26 -> 25 | 616.91 -> 620.62 |
Money can not buy tenpai: 71% -> 57% |
2024-09-06 | 26 | 620.90 -> 616.91 |
IX Russian Riichi Championship: 29% -> 14% |
2024-09-03 | 26 | 624.66 -> 620.90 |
SPB Riichi Open 2023: 100% -> 86% |
2024-09-01 | 31 -> 26 | 575.75 -> 624.66 |
SPB Riichi Open 2024: 0% -> 100% |
2024-08-11 | 32 -> 31 | 568.69 -> 575.75 |
Money can not buy tenpai: 86% -> 71% |