Kishke

Gems is also possible using this method, click on use gems to rush something when the confirmation opens use GG to find the value (5 for water 10 for the rest), then go to a different value building, and refine, do it 5,10,5,10 until you get 1 value, set it to a negative number and click boost. You'll see your gems goes up and the your have will crush, restart and enjoy.