391 route: Clone 2 fireballs, remove 2 squares of dirt immediately opposite the green button then move L 7D L D 2L U 2L, so that the glider presses both brown buttons, then collect the nearest 2 chips, drag the teeth onto the trap button for the blue key trap, pick up 2 more chips and the blue key. Pick up the yellow and red keys with the help of the teeth, then get the teeth trapped on the red key trap and pick up the chip behind the traps. Pick up the chip in the ice immediately above the nearest trap, then move 2D 3L U  3D 2U 2R, so that the fireball is pressing the brown button, then get this chip and the other chips in the ice. Now slide into the top right room, and use the 4 blocks here to explode the bombs in the next room. Use the blocks in the order 1, 2, 4, 3 and explode the bombs in the order 2, 4, 1, 3. Exit and clear the blue wall at the top end of the glider’s path, so that it will flip the green button above. Get the chips in the fireball cloner room, then the chips in the force floors, then the last chip in the gravel, then open the sockets and get the flippers. Push the block that is 3R U from the green button U (do not step on it), press the blue button, and push the nearest block D. The glider will now flip the blue button, allowing the exit to be reached.