Catch The Ant

This is a logical game in which you are fighting against a clever opponent - the Ant. Your goal is to close the chain of stones around the ant. The goal of the ant is to escape from the playing field.

You alternately make moves: The first move is made by the player: You put the three stones in any free cells. In response, the ant moves to one of the neighboring cells.

All next moves: You add one stone, and the ant moves to one of the neighboring cells.

Your goal is to cut off all possible exits.

Catch the ant!