You can try to use the bombs on both sides of the board, or you could try staying on one side (the left) as the game slides in that direction.
Both ways are shown in the video above.
Because of the limited moves, it can be easier to pass by staying to the left.
Click large groups of blocks to keep the bombs falling, get them close to the metal boxes and blow them up!
The cage under the center pet has two layers of metal on it, it needs two hits from bombs before it is broken.
If you only have one bomb beside it make sure that bomb is right down on the ground so it will only blow the cage and one metal box so the pet is still safe until you have another bomb.
If you have two bombs vertically, it's ok to blow them both up as this counts as two hits and the cage is destroyed completely.