Crossing numbers Just had a course in discrete geometry, also know a decent amount graph theory so it's actually very relevant for me. Though now I think it would great to expand this for a sort of distributed computing for these types of problems
Universal solution The game was fun and the puzzles were difficult at first. However I discovered that there is a universal solution to every puzzle allowing me to solve all of them with no effort at all making the game less interesting. The game it's self is very well done though and very difficult if you don't know the universal solution
Challenging The concept is simple, and the controls are as basic as it gets - drag and drop. But the challenges are progressively more complex with a dynamic solution process. Solving the puzzles is one challenge, to which there are multiple patern keys, but once you've solved it the next challenge is in doing so faster and faster.
Excellent but simple if you follow some steps Really good game and ridiculously hard to solve the harder levels in less than a minute, but there is a simple system to solve many of them which makes it a little boring later. Never the less a great game!
Great game This game is awesome for an untimed frustrating think game. Scored on time completed, I do not have to worry about spending more or adding friends. Great solo game to pass time.
Good but... It was challenging at first but after u get the trick it gets too easy not trying to boast but it gets really boring for me since even for the last level wasnt tat hard sorry..
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One of the most addictive and fun puzzles that will get your brain working daily