Thanks for playing the game! For the sliding mecanic, you have to go forward and jump to touch the ceiling of the planks. If you don't bump on it, you can slide by going in a down angle under the planks. I know it's very not clear but I made it that way because I wanted it to be difficult. It may have be to hard xd. So the game is not just about jumping, you can slide under planks to reach other peanuts =)