Dubrovin Sergey
From Saint Petersburg, Russia
EMA: 15990313
Common russian riichi rating (CRR)
Rating date Nov. 21, 2024 (latest changes Nov. 14, 2024).
214 place (68.45).
how we calculated rating score
max_coefficients = (4.60 * 1 + 3.85 * 1 + 3.75 * 1 + 3.65 * 1) = 15.85
p1 = (347.83 * 1.40 * 0.43 + 173.91 * 2.10 * 1 + 0 + 0 + 0) / (1.40 * 0.43 + 2.10 * 1 + 1 + 1 + 1) = 100.68876709637128
p2 = (173.91 * 2.10 * 1 + 347.83 * 1.40 * 0.43) / max_coefficients = 36.21009463722398
score = 100.68876709637128 * 0.5 + 36.21009463722398 * 0.5 = 68.44943086679763
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2024-11-14 | 215 -> 214 | 68.45 | |
| 2024-11-05 | 218 -> 215 | 68.45 | |
| 2024-11-04 | 213 -> 218 | 68.45 | |
| 2024-11-01 | 214 -> 213 | 68.45 | |
| 2024-10-27 | 213 -> 214 | 68.45 | |
| 2024-10-22 | 211 -> 213 | 74.83 -> 68.45 |
Fire cup 2023: 57% -> 43% |
| 2024-10-13 | 197 -> 211 | 75.25 -> 74.83 | |
| 2024-09-15 | 193 -> 197 | 75.25 | |
| 2024-09-14 | 194 -> 193 | 75.25 | |
| 2024-09-03 | 194 | 74.52 -> 75.25 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 174 |
|
39/47 | 100% | 2.10 | RR | Seihoku spring tournament 2024 |
| 2 | 348 |
|
16/24 | 43% | 1.40 | CRR | Fire cup 2023 |
| 3 | 410 |
|
24/40 | 0% | 2.90 | RR | North Cup 2018 |
| 4 | 391 |
|
15/24 | 0% | 2.50 | RR | West cup 2018 |
| 5 | 592 |
|
30/72 | 0% | 3.55 | EMA | RCR Saint Petersburg South Cup 2018 |
| 6 | 290 |
|
23/32 | 0% | 2.70 | RR | East Cup 2018 |
| 7 | 410 |
|
50/84 | 0% | 3.40 | EMA | VI Russian Riichi Championship 2017 |
| 8 | 641 |
|
15/40 | 0% | 1.80 | RR | Saint Petersburg championship. West cup 2017 |
| 9 | 209 |
|
35/44 | 0% | 1.90 | RR | Saint Petersburg championship. South cup 2017 |
| 10 | 14 |
|
71/72 | 0% | 3.25 | EMA | Saint Petersburg Riichi Open 2016 |