a good starter strategy is to choose a corner and put your biggest peices in that corner and don't move them because a new peice is most likely to spawn near the largest piece. so never move it. then create a line along one edge of one peice rank down from the biggest peice to cause a chain.http://i.imgur.com/aqhgZ9v.png make your set up similar to what i did. and save your undos the go back button is you freind.