Karpov Alexandr
From Novosibirsk, Russia
EMA: 15020011
Online rating
Rating date Jan. 16, 2023 (latest changes Jan. 16, 2023).
18 place (615.03).
how we calculated rating score
max_coefficients = (2.80 * 1 + 3.25 * 0.71 + 2.30 * 1) = 7.421475
p1 = (36.14 * 3.20 * 0.29 + 932.04 * 3.45 * 0.29 + 741.94 * 2.20 * 0.57 + 272.73 * 1.70 * 0.71 + 586.21 * 3.25 * 0.71 + 1000 * 2.40 * 0.86) / (3.20 * 0.29 + 3.45 * 0.29 + 2.20 * 0.57 + 1.70 * 0.71 + 3.25 * 0.71 + 2.40 * 0.86) = 643.8391233638215
p2 = (1000 * 2.40 * 0.86 + 586.21 * 3.25 * 0.71 + 741.94 * 2.20 * 0.57) / max_coefficients = 586.2136569886713
score = 643.8391233638215 * 0.5 + 586.2136569886713 * 0.5 = 615.0263901762464
Rating changes
| Date | Place | Points | Reason |
|---|---|---|---|
| 2023-01-16 | 14 -> 18 | 652.73 -> 615.03 |
Riichi Online Open Team Cup: 43% -> 29% |
| 2023-01-14 | 13 -> 14 | 649.22 -> 652.73 |
Winter Team Fight: 86% -> 71% |
| 2023-01-10 | 15 -> 13 | 653.34 -> 649.22 |
Winter Online Tournament: 14% -> 0% |
| 2022-12-15 | 15 | 654.51 -> 653.34 |
I wish to have dora san...: 71% -> 57% |
| 2022-12-12 | 12 -> 15 | 668.99 -> 654.51 |
Winter Online Tournament: 100% -> 86% |
| 2022-11-26 | 14 -> 12 | 664.54 -> 668.99 |
IORMC Qualifiers 2021: 86% -> 71% |
| 2022-11-21 | 18 -> 14 | 651.97 -> 664.54 |
No Dora Tournament: 43% -> 29% |
| 2022-11-16 | 12 -> 18 | 685.96 -> 651.97 |
Riichi Online Open Team Cup: 57% -> 43% |
| 2022-11-14 | 12 | 681.17 -> 685.96 |
Winter Team Fight: 100% -> 86% |
| 2022-11-12 | 13 -> 12 | 681.17 |
Tournaments
| # | Base rank | Date | Place | Power | Coefficient | Type | Tournament |
|---|---|---|---|---|---|---|---|
| 1 | 1000 |
|
1/40 | 86% | 2.40 | ONLINE | Winter Online Tournament |
| 2 | 586 |
|
37/88 | 71% | 3.25 | ONLINE | Winter Team Fight |
| 3 | 273 |
|
9/12 | 71% | 1.70 | ONLINE | IORMC Qualifiers 2021 |
| 4 | 742 |
|
9/32 | 57% | 2.20 | ONLINE | I wish to have dora san... |
| 5 | 932 |
|
8/104 | 29% | 3.45 | ONLINE | Riichi Online Open Team Cup |
| 6 | 36 |
|
81/84 | 29% | 3.20 | ONLINE | No Dora Tournament |
| 7 | 851 |
|
11/68 | 0% | 3.00 | ONLINE | Winter Online Tournament |
| 8 | 414 |
|
59/100 | 0% | 3.40 | ONLINE | Riichi Online Open Team Cup |
| 9 | 871 |
|
5/32 | 0% | 2.20 | ONLINE | 北斗 Tournament |
| 10 | 137 |
|
45/52 | 0% | 2.70 | ONLINE | Rainy season tournament［梅雨］ |
| 11 | 690 |
|
23/72 | 0% | 3.05 | ONLINE | Summer Tournament |
| 12 | 889 |
|
16/136 | 0% | 3.69 | ONLINE | Riichi Online Open Team Cup |
| 13 | 972 |
|
4/108 | 0% | 3.50 | ONLINE | Spring tournament |
| 14 | 878 |
|
16/124 | 0% | 3.06 | ONLINE | Be cool stay home |
| 15 | 813 |
|
27/140 | 0% | 3.70 | ONLINE | Corona go away |
| 16 | 175 |
|
119/144 | 0% | 3.71 | ONLINE | Riichi Online Open Team Cup 2020 |
| 17 | 1000 |
|
1/41 | 0% | 2.40 | ONLINE | Autumn Online Tournament |
| 18 | 509 |
|
28/56 | 0% | 2.80 | ONLINE | Summer Online Tournament |
| 19 | 386 |
|
52/84 | 0% | 3.20 | ONLINE | Riichi Online Open Team Cup |
| 20 | 451 |
|
29/52 | 0% | 2.70 | ONLINE | Spring online tournament 2018 |
| 21 | 326 |
|
30/44 | 0% | 2.30 | ONLINE | Winter online tournament 2018 |
| 22 | 343 |
|
45/68 | 0% | 2.40 | ONLINE | Autumn riichi-blitz 2016 |