On level 41 you should match five Lightning power-ups with five corresponding pieces of different color. This will clear the golden tiles on the left side. Here are some tips that will help you:
– Make sure not to match pieces of the same color with the Lightning twice;
– If you cannot get a piece of the needed color next to the Lightning, try making matches on the left;
– Remember that you can make power-ups on the right side to charge another Lightning.