Three in a Row

Take turns marking empty squares. Complete a row, column, or diagonal of three.

Looking ahead…

Auto plays both sides until the result.

Search uses a time limit; moves may not be optimal.

You can play first as ○ or second as ×. Tap an empty square, or use Tab and Enter. Make three in a line to win; a full board without a line is a draw. Hints progress from strategy to a tree of possible replies.

How to play

You can play first as ○ or second as ×. Tap an empty square, or use Tab and Enter. Make three in a line to win; a full board without a line is a draw. Hints progress from strategy to a tree of possible replies.