Karnaugh - puzzle game

A puzzle game based on Karnaugh's manual method of simplifying boolean expressions.
#How to play
- Press Start'
  - Select the number of variables, AB, ABC, ABCD and Difficulty.
  - Tap and slide your finger to select twice the square.
  - To wrap around to another table, tab and slide the box above or below, then slide to the desired sister box.
  - Press "Check" to verify the solution.