Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Feb. 12, 2024 (latest changes Feb. 12, 2024).
98 place (122.12).
how we calculated rating score
max_coefficients = (4 * 1 + 3.75 * 1 + 4.20 * 0.71 + 4.05 * 0.29) = 11.907145000000002
p1 = (135.14 * 4.05 * 0.29 + 120 * 4.20 * 0.71 + 205.61 * 4 * 1 + 0 + 0) / (4.05 * 0.29 + 4.20 * 0.71 + 4 * 1 + 1 + 1) = 131.8086923047766
p2 = (205.61 * 4 * 1 + 120 * 4.20 * 0.71 + 135.14 * 4.05 * 0.29) / max_coefficients = 112.43669242291078
score = 131.8086923047766 * 0.5 + 112.43669242291078 * 0.5 = 122.1226923638437
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-02-12 | 98 | 122.74 -> 122.12 |
Moscow Riichi 2022: 43% -> 29% |
| 2024-01-06 | 98 | 122.57 -> 122.74 |
IX Russian Riichi Championship: 86% -> 71% |
| 2023-12-19 | 111 -> 98 | 122.57 | |
| 2023-12-12 | 111 | 123.11 -> 122.57 |
Moscow Riichi 2022: 57% -> 43% |
| 2023-11-28 | 121 -> 111 | 123.11 | |
| 2023-11-06 | 125 -> 121 | 122.95 -> 123.11 |
IX Russian Riichi Championship: 100% -> 86% |
| 2023-10-12 | 125 | 123.43 -> 122.95 |
Moscow Riichi 2022: 71% -> 57% |
| 2023-09-28 | 126 -> 125 | 123.43 | |
| 2023-09-20 | 128 -> 126 | 123.43 | |
| 2023-09-06 | 129 -> 128 | 123.43 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 206 |
|
86/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 |
| 2 | 120 |
|
67/76 | 71% | 4.20 | RR | IX Russian Riichi Championship |
| 3 | 135 |
|
97/112 | 29% | 4.05 | RR | Moscow Riichi 2022 |