Remember squares and then open them.
Number of squares in levels:
1-10 levels - 16 squares. Must guess 4 squares.
11-20 levels - 25 squares. Must guess 5 squares.
21-30 levels - 36 squares. Must guess 6 squares.
31-all next levels - 49 squares. Must guess 7 squares.
Last updated on 2016年06月27日
Minor bug fixes and improvements. Install or update to the newest version to check it out!
