Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date July 12, 2025 (latest changes July 12, 2025).
79 place (466.72).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.35
p1 = (423.73 * 3.25 * 1 + 123.60 * 3.75 * 1 + 205.61 * 4 * 0.14 + 630.43 * 2.10 * 0.71 + 978.95 * 3.85 * 1 + 342.86 * 1.90 * 1) / (3.25 * 1 + 3.75 * 1 + 4 * 0.14 + 2.10 * 0.71 + 3.85 * 1 + 1.90 * 1) = 494.1548264259734
p2 = (978.95 * 3.85 * 1 + 423.73 * 3.25 * 1 + 630.43 * 2.10 * 0.71 + 342.86 * 1.90 * 1) / max_coefficients = 439.2944625407166
score = 494.1548264259734 * 0.5 + 439.2944625407166 * 0.5 = 466.724644483345
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-07-12 | 81 -> 79 | 462.62 -> 466.72 | |
| 2025-07-10 | 82 -> 81 | 462.62 | |
| 2025-07-03 | 83 -> 82 | 457.26 -> 462.62 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-15 | 76 -> 83 | 463.65 -> 457.26 | |
| 2025-06-11 | 79 -> 76 | 463.65 | |
| 2025-06-09 | 82 -> 79 | 463.65 | |
| 2025-06-08 | 81 -> 82 | 463.65 | |
| 2025-05-30 | 75 -> 81 | 471.27 -> 463.65 |
Seihoku spring tournament 2024: 86% -> 71% |
| 2025-05-12 | 78 -> 75 | 461.81 -> 471.27 | |
| 2025-05-10 | 80 -> 78 | 461.81 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City |
|---|---|---|---|---|---|---|---|---|
| 1 | 343 |
|
24/36 | 100% | 1.90 | RR | Seihoku spring tournament 2025 | Saint Petersburg |
| 2 | 424 |
|
35/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg |
| 3 | 124 |
|
79/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow |
| 4 | 979 |
|
3/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 5 | 630 |
|
18/47 | 71% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg |
| 6 | 206 |
|
86/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg |
| 7 | 120 |
|
67/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm |
| 8 | 135 |
|
97/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |