Kopylov Dmitry
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Aug. 31, 2025 (latest changes Aug. 27, 2025).
102 place (431.52).
how we calculated rating score
max_coefficients = (4.10 * 1 + 3.85 * 1 + 3.75 * 1 + 3.50 * 1) = 15.2
p1 = (205.61 * 4 * 0.14 + 630.43 * 2.10 * 0.57 + 978.95 * 3.85 * 1 + 123.60 * 3.75 * 1 + 423.73 * 3.25 * 1 + 342.86 * 1.90 * 1 + 0 * 2 * 1) / (4 * 0.14 + 2.10 * 0.57 + 3.85 * 1 + 3.75 * 1 + 3.25 * 1 + 1.90 * 1 + 2 * 1) = 431.8598629425586
p2 = (978.95 * 3.85 * 1 + 423.73 * 3.25 * 1 + 630.43 * 2.10 * 0.57 + 342.86 * 1.90 * 1) / max_coefficients = 431.1828947368421
score = 431.8598629425586 * 0.5 + 431.1828947368421 * 0.5 = 431.52137883970033
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-08-09 | 103 -> 102 | 431.52 | |
| 2025-08-04 | 103 | 429.41 -> 431.52 | |
| 2025-08-03 | 102 -> 103 | 429.41 | |
| 2025-07-30 | 101 -> 102 | 437.35 -> 429.41 |
Seihoku spring tournament 2024: 71% -> 57% |
| 2025-07-26 | 99 -> 101 | 437.35 | |
| 2025-07-19 | 100 -> 99 | 437.35 | |
| 2025-07-13 | 96 -> 100 | 437.35 | |
| 2025-07-12 | 97 -> 96 | 433.24 -> 437.35 | |
| 2025-07-03 | 99 -> 97 | 429.47 -> 433.24 |
SPB Riichi Open 2023: 29% -> 14% |
| 2025-06-15 | 94 -> 99 | 435.85 -> 429.47 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 0 |
|
19/19 | 100% | 2.00 | CRR | Tonpu-master | Saint Petersburg | |
| 2 | 343 |
|
24/36 | 100% | 1.90 | RR | Seihoku spring tournament 2025 | Saint Petersburg | |
| 3 | 424 |
|
35/60 | 100% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 4 | 124 |
|
79/90 | 100% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 5 | 979 |
|
🥉 | 3/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 6 | 630 |
|
18/47 | 57% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 7 | 206 |
|
86/108 | 14% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 8 | 435 |
|
14/24 | 0% | 1.40 | CRR | Fire cup 2023 | Saint Petersburg | |
| 9 | 0 |
|
32/32 | 0% | 1.80 | CRR | Earth cup | Saint Petersburg | |
| 10 | 120 |
|
67/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 11 | 385 |
|
25/40 | 0% | 1.80 | CRR | Sun tournament | Saint Petersburg | |
| 12 | 135 |
|
97/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |