Planet Puzzle League
I played a coworker (NST Hiro) today. He completely obliterated me. I want to practice enough to compete with him, but at the same time I don't know if that's possible - his puzzling feats seemed purely magical.
He recommended the Active Puzzle mode for good training, which I suppose I'll move on to once I finish the Advanced (static) puzzles.
Progress: Advanced Puzzle 6-2