Level 184 is quite hard but some may find it pleasant as you need to come up with a big bang! It’s really easy to make explosives on this level, but the most important thing is to use them correctly. It’s not worth spending your moves on detonating firecrackers. You should only do it if there is a group of them located close to one another just to charge the Lightning power-up faster. Other than that they are of no use.
The best tactic here is to collect bigger explosives. Those are better be at least dynamites, though bombs will also do. Bombs created in the central part of the field should be detonated closer to the edge of the central line so that the explosion can also reach the nearby earth tiles. At the same time it is important to detonate them on the same level (or at least close to it) in order to destroy the earth tiles faster. It’s not recommended to use your Lightning power-ups before at least some of the tiles in the areas on the left and on the right are filled with pieces. Otherwise, the power-ups will be wasted. Therefore, in the first half of this level concentrate on collecting and detonating bombs, while saving your Lightnings for later. This way it will be pretty easy to get a double Lightning, which will make passing the level considerably easier.
When the side areas have enough space for at least a few matches, the victory is almost yours as the earth tiles will be destroyed by auto matches in 5-7 moves. The most important thing is to clear those areas fast enough to have these 5-7 moves left.