Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date March 10, 2025 (latest changes March 10, 2025).
73 place (467.14).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (205.61 * 4 * 0.43 + 630.43 * 2.10 * 1 + 978.95 * 3.85 * 1 + 123.60 * 3.75 * 1 + 423.73 * 3.25 * 1) / (4 * 0.43 + 2.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.25 * 1) = 496.8461034887209
p2 = (978.95 * 3.85 * 1 + 423.73 * 3.25 * 1 + 630.43 * 2.10 * 1 + 123.60 * 3.75 * 1) / max_coefficients = 437.44227129337537
score = 496.8461034887209 * 0.5 + 437.44227129337537 * 0.5 = 467.14418739104815
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-03-10 | 75 -> 73 | 467.14 | |
| 2025-03-03 | 77 -> 75 | 461.89 -> 467.14 |
SPB Riichi Open 2023: 57% -> 43% |
| 2025-03-02 | 75 -> 77 | 461.89 | |
| 2025-02-16 | 80 -> 75 | 422.14 -> 461.89 |
White Wolf Cup: 0% -> 100% |
| 2025-02-11 | 85 -> 80 | 422.14 | |
| 2025-02-02 | 81 -> 85 | 422.14 | |
| 2025-01-26 | 77 -> 81 | 422.14 | |
| 2025-01-07 | 74 -> 77 | 422.14 | |
| 2025-01-03 | 75 -> 74 | 420.40 -> 422.14 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-11 | 77 -> 75 | 420.40 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 424 |
|
35/60 | 100% | 3.25 | RR | White Wolf Cup |
| 2 | 124 |
|
79/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 3 | 979 |
|
3/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 4 | 630 |
|
18/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 5 | 206 |
|
86/108 | 43% | 4.00 | RR | SPB Riichi Open 2023 |
| 6 | 120 |
|
67/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
| 7 | 135 |
|
97/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |