Just caught up, liked the last 2 parts
I'll take a stab at the puzzles
Spoiler:
Take the rabbit across then go back and get the cabbage, drop it off and pick the rabbit back up and bring it back to the first side. Leave it there and take the fox over to the new country then go back and get the rabbit.
....other puzzles I'll edit with an answer later. I can't think of maths at the minute lol
