Gravity Petal Plus - Connect the windmills which are chequered with dark and light for iOS

When playing Gravity Petal Plus, what you should do is just to connect the petals which are chequered with dark and light.Brown petals are the blocks.The score you will get each time equals the square of the number of the connected petals.Gravity Petal Plus supports GameCenter and the score depends on how fast you can connect the same color petal.