Battle city based on SAPF algorithm

Battle City, I believe we are not unfamiliar. Suppose such a rule: on the map there are total of n mine, white and black tanks; Within the specified time, who occupies most of mine will come to victory. Notice that, the tank is running automatically, not manually controlled. Obviously, an efficient AI which is the core of game determines game´s outcome. How to occupy more mine in the shortest possible time, in other words, we should choose the shortest path to reach mine. Therefore, designing an efficient pathfinding algorithm is the key.