Mouse Trap

The naughty little mouse has consumed all of your cheese. Outraged, you decided to catch the thief and gives it some delicious revenge. In this game, your target is to trap the mouse before it escapes. When the game starts, the mouse will stay at the center of a large mat composed of multiple hexagonal tiles and a number of pillars. Each time when you click any of the empty tiles to place a pillar, the mouse will move to an adjacent tile. Continue the process until you successfully trap the mouse. Note that you need to accomplish your goal before the mouse moves out of the mat, or you will lose. You will start the game with 20000 points, as shown at the top left corner of the screen. Each time you place a pillar onto the mat, 50 points will be deducted. Can you construct an unbreakable trap?