Difficult Tic Tac Toe

Picking a side feels serious here, because the grid is ruled by an AI that rarely slips. In a match of Difficult Tic Tac Toe, the computer answers with stored patterns and usually finds the strongest square after nearly any mark appears. Defense alone won't save it either. The rival setup pushes for its own line with careful pressure, leaving only a narrow path to beat the machine.

How to play?

Choose crosses or zeros before the board fills with play. Placing your symbol in an empty square begins the round and claims space for a future line. Building three marks across a row, down a column, or along a diagonal ends the match in your favor.