Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Sept. 19, 2023 (latest changes Sept. 19, 2023).
128 place (123.43).
how we calculated rating score
max_coefficients = (4.20 * 1 + 4 * 1 + 3.75 * 1 + 4.05 * 0.71) = 14.842915
p1 = (135.14 * 4.05 * 0.71 + 120 * 4.20 * 1 + 205.61 * 4 * 1 + 0 + 0) / (4.05 * 0.71 + 4.20 * 1 + 4 * 1 + 1 + 1) = 131.16712359317998
p2 = (205.61 * 4 * 1 + 120 * 4.20 * 1 + 135.14 * 4.05 * 0.71) / max_coefficients = 115.70234014006009
score = 131.16712359317998 * 0.5 + 115.70234014006009 * 0.5 = 123.43473186662004
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-09-06 | 129 -> 128 | 123.43 | |
| 2023-09-03 | 116 -> 129 | 79.18 -> 123.43 |
SPB Riichi Open 2023: 0% -> 100% |
| 2023-09-01 | 116 | 79.18 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 206 |
|
86/108 | 100% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 2 | 120 |
|
67/76 | 100% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 3 | 135 |
|
97/112 | 71% | 4.05 | RR | Moscow Riichi 2022 | Moscow |