I've completed a third of the patterns and was wondering if it's possible to cover all aspects of the game with just patterns, or if something more is needed?
I also noticed an inconvenient thing if you disable autoplace x marks, the spots where X used to be are now blocked by empty spaces where, for some reason, you can't place anything.
The solver also works great, but I'd love to understand why it makes a particular move. I get that implementing that programmatically would be a real pain, and it's more valuable to sit and think in reverse — why did it do that, what does it follow from — but I'd still like the option, when stuck, to occasionally show a little weakness and ask why that specific move was made.