Monday, September 9, 2013
I had to read the directions twice before I really understood them.
Try not to tap on the ones that are 'tertiary'. You can figure out some of them. But there is an element of guessing.
Weekend update: I've investigated this more and have solved it 10 more times - all without luck. I have figured out a system.
Tertiary is definitely intriguing, but once you've figured out a system, it then becomes a 'how fast can you solve this' puzzle.
Tertiary is a free puzzle app, give it a shot.