Kopylov Dmitry
From Saint Petersburg, Russia
Internal rating (RR)
Rating date Oct. 9, 2026 (latest changes Oct. 8, 2026).
155 place (289.98).
how we calculated rating score
max_coefficients = (4.71 * 1 + 3.90 * 1 + 3.40 * 1 + 3.40 * 1) = 15.41
p1 = (123.60 * 3.75 * 0.14 + 423.73 * 3.25 * 0.43 + 342.86 * 1.90 * 0.57 + 194.81 * 3.45 * 0.86 + 54.05 * 3.40 * 1 + 366.67 * 1.70 * 1 + 354.84 * 1.80 * 1 + 633.80 * 3.40 * 1) / (3.75 * 0.14 + 3.25 * 0.43 + 1.90 * 0.57 + 3.45 * 0.86 + 3.40 * 1 + 1.70 * 1 + 1.80 * 1 + 3.40 * 1) = 319.9143532118774
p2 = (633.80 * 3.40 * 1 + 354.84 * 1.80 * 1 + 366.67 * 1.70 * 1 + 423.73 * 3.25 * 0.43) / max_coefficients = 260.03893575600256
score = 319.9143532118774 * 0.5 + 260.03893575600256 * 0.5 = 289.97664448394
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-09-26 | 156 -> 155 | 289.98 | |
| 2026-09-07 | 157 -> 156 | 289.98 | |
| 2026-09-06 | 201 -> 157 | 197.29 -> 289.98 |
Sunset Wolf Cup 2026: 0% -> 100% |
| 2026-09-01 | 197 -> 201 | 212.50 -> 197.29 |
SPB Riichi Open 2024: 14% -> 0% |
| 2026-08-31 | 195 -> 197 | 214.06 -> 212.50 |
SPB Riichi Open 2025: 100% -> 86% |
| 2026-08-27 | 196 -> 195 | 214.06 | |
| 2026-08-26 | 195 -> 196 | 214.81 -> 214.06 |
Seihoku spring tournament 2025: 71% -> 57% |
| 2026-08-16 | 189 -> 195 | 223.66 -> 214.81 |
White Wolf Cup: 57% -> 43% |
| 2026-08-15 | 190 -> 189 | 223.02 -> 223.66 | |
| 2026-08-13 | 193 -> 190 | 220.41 -> 223.02 |
Moscow Riichi 2024: 29% -> 14% |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 634 |
|
27/72 | 100% | 3.40 | RR | Sunset Wolf Cup 2026 | Saint Petersburg | |
| 2 | 355 |
|
21/32 | 100% | 1.80 | RR | Seihoku Summer Tournament 2026 | Saint Petersburg | |
| 3 | 367 |
|
20/31 | 100% | 1.70 | RR | Seihoku spring tournament 2026 | Saint Petersburg | |
| 4 | 54 |
|
71/75 | 100% | 3.40 | RR | White Wolf Cup 2026 | Saint Petersburg | |
| 5 | 195 |
|
63/78 | 86% | 3.45 | RR | SPB Riichi Open 2025 | Saint Petersburg | |
| 6 | 343 |
|
24/36 | 57% | 1.90 | RR | Seihoku spring tournament 2025 | Saint Petersburg | |
| 7 | 424 |
|
35/60 | 43% | 3.25 | RR | White Wolf Cup | Saint Petersburg | |
| 8 | 124 |
|
79/90 | 14% | 3.75 | RR | Moscow Riichi 2024 | Moscow | |
| 9 | 979 |
|
🥉 | 3/96 | 0% | 3.85 | RR | SPB Riichi Open 2024 | Saint Petersburg |
| 10 | 630 |
|
18/47 | 0% | 2.10 | RR | Seihoku spring tournament 2024 | Saint Petersburg | |
| 11 | 206 |
|
86/108 | 0% | 4.00 | RR | SPB Riichi Open 2023 | Saint Petersburg | |
| 12 | 120 |
|
67/76 | 0% | 4.20 | RR | IX Russian Riichi Championship | Perm | |
| 13 | 135 |
|
97/112 | 0% | 4.05 | RR | Moscow Riichi 2022 | Moscow |