Level 91: JUMPING SWARM (JPQG)

Richard Field: This level is difficult technically, but I found it easier than "KNOT". The general rule to follow is to clear the chips down the right side, then across the top, then down the left side before going into the middle. This gives the walkers more room to travel along the edges and keeps them out of the middle to some extent. When you do get to the middle and need two or three chips, DO NOT PANIC. Hide and move. The exit is at the bottom right. Try this pattern at the start:
U15DLL7ULL4ULLL6URRR5U20LDDD5L5DRRR5DRR and go to the middle.