It took me a moment to figure out, as my brain is on vacation today. Really cute, nice and easy - you just have to move slowly at points so as not to throw B off the map.
Thanks for the rating @D.S.Masters! But if you fell in the water, I left some stairs so you can go back up...
Now, that begins to be serious level for kids Really pleasant and intuitive. Yoyo needed a hint but did it. You made all things great! Thanks.
Thanks @Gepeto! I really appreciate Yoyo's feedback. My kid also liked it so I'm happy that kids are playing!