Impossible badge strategy:
Get all the locked pieces yellow first.
Make the 1s, 2s, and 6s yellow next. Move around the other pieces to make this possible.
Make as many 3s, 4s, and 5s yellow as possible.
If this doesn't work, try it again. It'll take some time, but it's possible!
 "Accelerator"){kind=icon}
 "Endless Migration"){kind=icon}
 "I Have 1 Day"){kind=icon}
 "Upgrade Complete 2"){kind=icon}
 "Elephant Quest"){kind=icon}
 "Hexiom"){kind=icon}
 "Solipskier"){kind=icon}
 "Enough Plumbers"){kind=icon}
 "Guitar Geek"){kind=icon}
 "This is the Only Level TOO"){kind=icon}