Step 1: Never Move Down!

Start by moving all the tiles to the top of the screen. Never move down

Step 2: Biggest Number in the Corner

Always keep the biggest number in a the top right corner. Maneuver an place the next largest to the left of it and the next to the left of this.

Step 3: Avoid Moving Left

While not as tragic to the player as moving down, moving left can be tragic if the top row isn't full or two numbers collapse. At first, avoid going left until the top is filled with higher ranking, more stable tiles.

Step 4: Keep a Full Line at the Top

By keeping the top row full, the board can be tilted left or right without affecting the numbers on top.

Step 5: Get Chain Reactions

Work at the end of a chain going from your weakest number to the greatest(left to right)
Use the small numbers on the left to grow the larger ones on the right.

Step 6: Build Down

Once the top row fills with high level blocks the player should build down in the left column to keep order in the "backfield". These can be slid up to boost the top left tile, which in turn combines to the right.