Elven Guard Monster Capture

1. Swap the lower yellow gem on the left side to the right
2. Swap the lower yellow gem on the right side to the left. Your third and six columns should be empty
3. Swap the lower green gem on the left side to the right
4. Swap the remaining green gem on the left side to the right, removing the middle column of skulls
5. Swap the middle yellow gem on the side upwards, to clear the top 3 yellow gems
6. Clear the skulls, the explosion should get everything else