SKELOTAUR

1. Move red orb in column 2 right to clear column of 3 green orbs.
2. Repeat moving red orb right to clear columns of 3 skulls, 3 green orbs, then 3 skulls and finishing with a row of 3 red orbs.
3. Move blue orb in column 6 left to clear column of 3 green orbs.
4. Repeat moving blue orb left to clear columns of 3 skulls and 3 green orbs, finishing with the row of 3 blue orbs.