Board Thread:Fun and Games/@comment-30760644-20170411210818/@comment-29191679-20170512015357

I knew that the three-digit numbers could not be Hexadecimal, since Hex numbers are two-digit.

This left two candidates for the first encryption: Octal and ASCII.

ASCII turned out to be the right one, which was decrypted into Hexadecimal numbers.

Once I decrypted the Hex numbers, I knew that Octal was the only one left.

And then... I found your code...

And the code was...