## Solution
* We are given with a `Morse Code`.
> --- -... -.- --.- .--. - . -.- ... - -.-. -.- ..- .... .-. --.- -.- ...-
* Decoding it gives
> obkqptekstckuhrqk
* From challenge description we get a hint of cipher `fair play` which is `Playfair Cipher`.
* Bruteforcing Playfair cipher with dictionary attack, we get flag. ([https://www.quinapalus.com/cgi-bin/playfair](http://Decoder))
> helpussheiscoming
* Putting in flag format.
* **Flag :**`TG20{helpussheiscoming}`