Smash Workers - many workers

This game's goal is to smash many workers as many as possible.
First, there are 4 workers.
If touch worker, the worker will be removed.
Among workers, there is a worker who wore protection cap.
If you want to remove the worker, you must smash him many times.
If he wore one protection cap, then you must smash him one time and finally one more.
If he wore two protection caps, then you must smash him two times and finally one more.
Compare your score with other's in global leaderboard.