Now we are going to learn to develop their skill and we will do as follows. We will manage a small red ball on this field over the pond here. We will manage and hunt other small balls, which themselves will be formed in different places and at the same time to grow. Our task will be the same immediately to prevent their growth touching his ball to someone else, then it will disappear. If the balls grow to a size such that at least two of them soprekosnutsya - you lose. Let's see how much you an suffice. Good luck!