Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Aug. 12, 2023 (latest changes Aug. 12, 2023).
116 place (79.18).
how we calculated rating score
max_coefficients = (4.20 * 1 + 3.75 * 1 + 4.05 * 0.71 + 3.50 * 0.57) = 12.842815
p1 = (135.14 * 4.05 * 0.71 + 120 * 4.20 * 1 + 0 + 0 + 0) / (4.05 * 0.71 + 4.20 * 1 + 1 + 1 + 1) = 88.6691307714372
p2 = (120 * 4.20 * 1 + 135.14 * 4.05 * 0.71) / max_coefficients = 69.68332098531359
score = 88.6691307714372 * 0.5 + 69.68332098531359 * 0.5 = 79.17622587837539
Rating changes
Date | Place | Points | Reason |
---|---|---|---|
2023-08-12 | 115 -> 116 | 81.85 -> 79.18 |
Moscow Riichi 2022: 86% -> 71% |
2023-07-28 | 116 -> 115 | 81.85 | |
2023-07-20 | 116 | 80.54 -> 81.85 | |
2023-06-12 | 116 | 82.98 -> 80.54 |
Moscow Riichi 2022: 100% -> 86% |
2023-06-11 | 97 -> 116 | 88.70 -> 82.98 | |
2023-05-28 | 97 | 88.04 -> 88.70 | |
2023-05-20 | 97 | 86.48 -> 88.04 | |
2023-04-19 | 97 | 85.77 -> 86.48 | |
2023-03-28 | 97 | 85.05 -> 85.77 | |
2023-03-20 | 97 | 83.70 -> 85.05 |
Tournaments
# | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
---|---|---|---|---|---|---|---|
1 | 120 |
|
67/76 | 100% | 4.20 | RR | IX Russian Riichi Championship |
2 | 135 |
|
97/112 | 71% | 4.05 | RR | Moscow Riichi 2022 |