About HIMAWARI
rule
You connect flower with stem, and explode sunflower.
If there is space on the point of stem just before explode sunflower,
come into leaf at that point.
If you hit leaf at watermelon ,next one is appear.
You can clear the stage, if you hit 5 times.
Detailed rule
If you connect flower more than 3, they are explode.
Stem also explode adjoining area of the explosion.