Kopylov Dmitry
From Saint Petersburg, Russia
Common russian riichi rating (CRR)
Rating date Jan. 3, 2025 (latest changes Jan. 3, 2025).
79 place (435.31).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (0 * 1.80 * 0.14 + 434.78 * 1.40 * 0.29 + 205.61 * 4 * 0.57 + 630.43 * 2.10 * 1 + 978.95 * 3.85 * 1 + 123.60 * 3.75 * 1) / (1.80 * 0.14 + 1.40 * 0.29 + 4 * 0.57 + 2.10 * 1 + 3.85 * 1 + 3.75 * 1) = 490.41193406523877
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 = 490.41193406523877 * 0.5 + 380.2069400630914 * 0.5 = 435.3094370641651
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2025-01-03 | 80 -> 79 | 432.86 -> 435.31 |
SPB Riichi Open 2023: 71% -> 57% |
| 2024-12-25 | 83 -> 80 | 428.30 -> 432.86 |
Earth cup: 29% -> 14% |
| 2024-12-22 | 82 -> 83 | 428.05 -> 428.30 |
Fire cup 2023: 43% -> 29% |
| 2024-12-18 | 83 -> 82 | 428.05 | |
| 2024-12-11 | 87 -> 83 | 428.05 | |
| 2024-11-05 | 94 -> 87 | 420.72 -> 428.05 | |
| 2024-11-04 | 93 -> 94 | 420.72 | |
| 2024-11-03 | 95 -> 93 | 419.65 -> 420.72 |
SPB Riichi Open 2023: 86% -> 71% |
| 2024-10-27 | 96 -> 95 | 419.65 | |
| 2024-10-25 | 96 | 415.86 -> 419.65 |
Earth cup: 43% -> 29% |
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 | 435 |
|
14/24 | 29% | 1.40 | CRR | Fire cup 2023 |
| 6 | 0 |
|
32/32 | 14% | 1.80 | CRR | Earth cup |
| 7 | 120 |
|
67/76 | 0% | 4.20 | RR | IX Russian Riichi Championship |
| 8 | 385 |
|
25/40 | 0% | 1.80 | CRR | Sun tournament |
| 9 | 135 |
|
97/112 | 0% | 4.05 | RR | Moscow Riichi 2022 |