Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Jan. 3, 2025 (latest changes Jan. 3, 2025).
74 place (422.14).
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 * 0.57 + 630.43 * 2.10 * 1 + 978.95 * 3.85 * 1 + 123.60 * 3.75 * 1 + 0) / (4 * 0.57 + 2.10 * 1 + 3.85 * 1 + 3.75 * 1 + 1) = 464.0740512567768
p2 = (978.95 * 3.85 * 1 + 630.43 * 2.10 * 1 + 205.61 * 4 * 0.57 + 123.60 * 3.75 * 1) / max_coefficients = 380.2069400630914
score = 464.0740512567768 * 0.5 + 380.2069400630914 * 0.5 = 422.1404956599341
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-03 | 75 -> 74 | 420.40 -> 422.14 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-11 | 77 -> 75 | 420.40 | |
| 2024-11-06 | 74 -> 77 | 430.02 -> 420.40 |
IX Russian Riichi Championship: 14% -> 0% |
| 2024-11-03 | 78 -> 74 | 428.18 -> 430.02 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-13 | 64 -> 78 | 456.33 -> 428.18 |
Moscow Riichi 2024: 0% -> 100% |
| 2024-09-06 | 67 -> 64 | 447.91 -> 456.33 |
IX Russian Riichi Championship: 29% -> 14% |
| 2024-09-03 | 71 -> 67 | 437.53 -> 447.91 |
SPB Riichi Open 2023: 100% -> 86% |
| 2024-09-01 | 120 -> 71 | 197.98 -> 437.53 |
SPB Riichi Open 2024: 0% -> 100% |
| 2024-08-11 | 121 -> 120 | 197.19 -> 197.98 | |
| 2024-08-04 | 117 -> 121 | 200.18 -> 197.19 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 124 |
|
79/90 | 100% | 3.75 | RR | Moscow Riichi 2024 |
| 2 | 979 |
|
3/96 | 100% | 3.85 | RR | SPB Riichi Open 2024 |
| 3 | 630 |
|
18/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 4 | 206 |
|
86/108 | 57% | 4.00 | RR | SPB Riichi Open 2023 |
| 5 | 120 |
|
67/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
| 6 | 135 |
|
97/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |