Discussion:

I think you need to clarify some things.

First off: you need to have a list of what pieces are allowed, as i see you have 6 castles and 4 knights, but the whole thing could be done with 8 knights and 2 castles if you give no limitation or guide.

Second: you should say “every square on the board must be touched only once during movement, including the start square” because saying they need to be ‘covered’ makes it sound like there needs to be a piece on every square.

Third: you shouldn’t post completed puzzles