I'm sorry about the soft locks! It probably has to do with some resources not getting cleaned up or something like that. I tracked down a ton of those errors but there's probably still one or two left. The HTML5 version is the most susceptible, i think the windows version is a little better at dealing with it
I'm glad you're enjoying the game, you can still play with most of the pokemon on the novice puzzles... sandslash is the best one anyways!! and they hate 4-peg puzzles as much as you ha ha~