Release the two flame monster so that
they destroy both ice blocks.

Jump to the left.
Break the marked green block.
Go up and take the blue color.
Then shoot fireballs to destroy 3 red fruit blocks.

Go to the right to the hammers.
Remove these three blocks and wait for the
rolling monster to clear the whole lines.

Destroy the marked block.

Destroy this block.
Now the monster will break all red blocks.

Now do these two things:
1. Shoot the monster with a fireball.
2. Remove the last green fruit blocks.
The rest is obvious.

The mystery is hidden in the green color pot.
Break it with a hammer.