Petals Around The Rose

I got this puzzle from my friend's blog. It is called Petals Around The Rose. You can find the link here. I cannot really solve it. However, when one does not know what to do, what should one do? Mr.Brown once said, "You don't know ar? Go Google lar!" I remembered what he said when I was figuring half way. Finally I got the solution.

For those who wish to try them out without Googling, I have 2 tips for you.

1. Always remember the name of the game. It influences the game a lot.
2. The answers will always be an even number.

So, all the best in solving the puzzle......