You have to create 5 in row to make lightning bolts. You need to do this in such a way that you can manoeuvre the 2 bolts next to each other, then move one onto the other.this will create a whirlwind that clears everything off the board, however it only clears one level of the lower squares. You then have to do the same again to totally clear the lower squares. After I did this I had about 86000 of the 90000 points you need to complete th level, and I still had 25 moves left. I passed the 90000 points with 20 moves left.