On turn 147, the blue player has three possible actions: 1. Go through the pink command post into the dungeon. 2. Go to the enemy and exchange troops. 3. Go into the enemy's dungeon, hoping to find some valuable resources. All three options can be combined into one: go into the enemy's dungeon -> collect whatever you find -> get defeated/buy your way out of the enemy (you have money and explosives) -> buy Gurney with troops in the tavern and go to the pink command post. In my opinion, this is a logical strategy.