Karpov Alexandr
From Novosibirsk, Russia
EMA: 15020011
Online rating
Rating date April 4, 2026 (latest changes March 28, 2026).
72 place (300.33).
how we calculated rating score
max_coefficients = (4.45 * 1 + 4.45 * 1 + 2.40 * 1) = 11.3
p1 = (774.65 * 3.05 * 0.71 + 451.61 * 2.20 * 1 + 0 + 0 + 0) / (3.05 * 0.71 + 2.20 * 1 + 1 + 1 + 1) = 363.37578258250363
p2 = (774.65 * 3.05 * 0.71 + 451.61 * 2.20 * 1) / max_coefficients = 237.27522123893803
score = 363.37578258250363 * 0.5 + 237.27522123893803 * 0.5 = 300.32550191072085
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2026-03-28 | 6 -> 72 | 801.75 -> 300.33 |
Spring online tournament 2025: 0% -> 100% |
| 2021-02-01 | 22 -> 6 | 586.82 -> 801.75 | |
| 2020-02-01 | 22 | 586.82 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Rating | Tournament | City | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 452 |
|
18/32 | 100% | 2.20 | ONLINE | Spring online tournament 2025 | Russia | |
| 2 | 775 |
|
17/72 | 71% | 3.05 | ONLINE | Winter online tournament 2025 | Russia | |
| 3 | 1000 |
|
🥇 | 1/40 | 0% | 2.40 | ONLINE | Winter Online Tournament | Russia |
| 4 | 586 |
|
37/88 | 0% | 3.25 | ONLINE | Winter Team Fight | Russia | |
| 5 | 273 |
|
9/12 | 0% | 1.70 | ONLINE | IORMC Qualifiers 2021 | Russia | |
| 6 | 742 |
|
9/32 | 0% | 2.20 | ONLINE | I wish to have dora san... | Russia | |
| 7 | 932 |
|
8/104 | 0% | 3.45 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 8 | 12 |
|
81/82 | 0% | 3.15 | ONLINE | No Dora Tournament | Russia | |
| 9 | 851 |
|
11/68 | 0% | 3.00 | ONLINE | Winter Online Tournament | Russia | |
| 10 | 414 |
|
59/100 | 0% | 3.40 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 11 | 871 |
|
5/32 | 0% | 2.20 | ONLINE | 北斗 Tournament | Russia | |
| 12 | 137 |
|
45/52 | 0% | 2.70 | ONLINE | Rainy season tournament［梅雨］ | Russia | |
| 13 | 690 |
|
23/72 | 0% | 3.05 | ONLINE | Summer Tournament | Russia | |
| 14 | 889 |
|
16/136 | 0% | 3.69 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 15 | 972 |
|
4/108 | 0% | 3.50 | ONLINE | Spring tournament | Russia | |
| 16 | 878 |
|
16/124 | 0% | 3.06 | ONLINE | Be cool stay home | Russia | |
| 17 | 813 |
|
27/140 | 0% | 3.70 | ONLINE | Corona go away | Russia | |
| 18 | 175 |
|
119/144 | 0% | 3.71 | ONLINE | Riichi Online Open Team Cup 2020 | Russia | |
| 19 | 1000 |
|
🥇 | 1/41 | 0% | 2.40 | ONLINE | Autumn Online Tournament | Russia |
| 20 | 509 |
|
28/56 | 0% | 2.80 | ONLINE | Summer Online Tournament | Russia | |
| 21 | 386 |
|
52/84 | 0% | 3.20 | ONLINE | Riichi Online Open Team Cup | Russia | |
| 22 | 451 |
|
29/52 | 0% | 2.70 | ONLINE | Spring online tournament 2018 | Russia | |
| 23 | 326 |
|
30/44 | 0% | 2.30 | ONLINE | Winter online tournament 2018 | Russia | |
| 24 | 343 |
|
45/68 | 0% | 2.40 | ONLINE | Autumn riichi-blitz 2016 | Russia |