This one more challenging than the last – failed in the initial hour, but knew that I had a bug in my “maze-solving” code. Second go, got the silver within about 20 minutes.

First time for a while that I’ve had a go at one of these – got a silver in about 10 minutes but couldn’t immediately see how to improve the memory usage / running time to get a gold so went for certification. I think I did have a lead though, so I’m planning on taking it again soon.