I have encountered this lose so many times now in surrounded. I died because i had to much food. I had like 200 k points and 4000 food but at some point every food tile is full and every ant has food and cant fight because they cant store the food. They just stand there and get slaughtered. Workers stop transporting eggs to tiles because they are stuck with the food. In my Opinion the Tiger Beetle and the CoachHorse adults give to much food for what is needed to kill them.