Ok. I figured it out just by playing. The snakes cannot be “moved” but if you do a move on a snake (say he’s on green then there’s a yellow and then another green and a green on top of the yellow and you move the green and yellow to make three green and the snake is on the one green) then the snake will JUMP to another gem! And the snake likes to jump to a GOOD gem that has any “powers” (stripe, butterfly etc) then he gets those tied up. But if you use say the multi color gem and a while bunch of gems fall, the snakes will bounce all over the place. I wasted a live to try to figure out what they did. Lol! Good luck!

Ya, I really don't understand how the snakes work? They used to do an explanation of new obstacles and boosters. And there is nothing under "support". Can't figure out how they work.