Diamond Rush Perfect Walkthrough: Tibet or Siberia Stage 9

I love this stage. It&one of the toughest in the game, but its puzzles are brilliantly designed. The last puzzle is just a giant cherry on this marvelous cake. About this walkthrough: I call it "perfect" because it shows you how to get the 4 possible perfect messages (all purple and red diamonds, no hits or retries) on every stage in the game.