At candy crush 99 I have 13 moves left and it stops. Why?

kikicol

I am unable to use all my moves  How can I solve this. I cut off at 13  everytime 

Baz_James

The game starts with two countdown bombs set at 7. After each move is taken these count down 1. If you allow them to count down to zero before removing them they explode and end the game. You have 20 moves and the countdown starts at 7. 20 - 7 = 13