[coder23]

I gave up on level 28. Solving it would require pen and paper or some serious thought. The difficulty curve is excellent.

[wubbfindel]

I've gotten to 31 without the need for pen & paper - but yes, your right, the difficulty balancing is great. It's had me scratching my head a couple of times, but not so much to cause me to quit.

Sign of a good game.

[coder23]

No idea why you got downvoted.

Such silliness really drives me away from hn.