Clearing a square by walking over it: 10 points.
Collecting flags: 500, 1,000, 1,500, 2,000 points etc.
Defusing a bomb with 50-60 seconds remaining: 3,000 points.
Defusing a bomb with 40-49 seconds remaining: 2,500 points.
Defusing a bomb with 30-39 seconds remaining: 2,000 points.
Defusing a bomb with 20-29 seconds remaining: 1,500 points.
Defusing a bomb with 10-19 seconds remaining: 1,000 points.
Defusing a bomb with 1-9 seconds remaining: 500 points.

* Collect all of the flags on the early levels as there is no great threat from the boots.

* Scroll bombs to the opposite edge of the screen so you can easily collect them and move back to your starting side.

* At the start of each level you get a few seconds where the boots can not move. Make use of this time to get to the first bomb.

* If two bombs are ticking down, get the closest one first unless the other is much closer to exploding.

* Move the floor away from boots to trap them.

* If you trap a boot on a single square, you can move the square away from underneath it, trapping it on empty space.