Empty Glass Blocks Level 250

[koetsub]

Note the empty glass blocks about midway vertically, left and right ends.

[[S8] Regina]

For this level, you will need to clear the Snake heads and other Jewels will fall into those slots.

[koetsub]

So only way to clear those snake heads is through the use of blasters (or a diamond/jewel combo), but those empty spots are ideal locations for jewels to clear the snake heads.