Level 51: I SLIDE (IGGJ) - Chip's Challenge

Richard Field: One way to solve this level is to draw a tree diagram. From the centre area of nine blocks, travel in each direction possible from each of the eight blocks around the edge of the square. As you travel you are heading down a branch of the "tree". At each square you stop at (whether it has a chip on it or not), you are at a branch point (or node). Now travel in each of the three new directions that are possible (you just came to the node block by one direction, so there are three new directions left). Draw a diagram of where each of these directions leads. Eventually on the piece of paper you will have what looks like a tree. Some branches end in dead ends. Some have chips at the end. You need to travel all the paths to find all the chips. Then, when you are at zero chips required, go back to the centre area of nine blocks, leave from the top middle block to go through the chip socket, then go up again to find the exit.