Hello. I had first began using Exercism today. I tried the chess queens exercise first, and I mostly had troubles trying to figure out the whole exercism system- how does the computer check, how to submit code & etc. I made a code which works but doesnt fit the requirements for the exercise, because my code is a class for Queen and the exercise demands 2 classes - one for queen and one for calculating the attack. I cant figure out how to create a second class- which means the code doesnt run for me and I cant pass the exercise on the website. can someone help?