You just have to decide weather the ans is right or wrong.
If the given ans is right then click on the right button and if the ans is wrong then click on the wrong button.
As soon as you press button and if your ans is right then new puzzle will be there for ans.
Each puzzle will give you one second to ans.
If your ans is wrong or if you take longer time then 1 seconds then game will be over.
Give more correct answer and go on and on and also register high score and compete with your friends.