Three in a Row — You Move First

Tic Tac Toe — Board & Classic

Nine squares, an opponent that never rushes and the first move always yours. Hard mode does not forgive a lazy corner.

Tic Tac Toe is the smallest complete strategy game there is, and playing it against a competent opponent is a genuinely useful exercise. The grid is three by three, the pieces are crosses and circles, and the goal is a line of three. What makes it worth playing is not the game itself but what it teaches: that a draw against good play is a real result, and that the correct move is often the defensive one you did not want to make.

Three in a row, and nowhere to hide

Tic Tac Toe is the smallest version of a strategy game: a three-by-three grid, two players, nine squares, and one winning condition. Played perfectly it always ends in a draw, which sounds like a weakness until you realise it makes the game a clean test of whether you can avoid the single mistake that loses it.

Take a corner, not the edge

Corners belong to three potential lines each, edges to only two, and the centre to four. If you cannot claim the middle, a corner is the next best square. Playing an edge on your first move is the most common beginner error and the quickest way to hand the initiative away.

The fork is the only real weapon

You cannot win against a careful opponent by force. What you can do is create a fork — a move that produces two separate threats at once — so that blocking one still leaves the other. Recognising the three or four standard fork shapes and refusing to allow them is the entire strategic content of the game.

Defence is the discipline

The reflex when you are behind is to build your own line. The correct habit is to scan your opponent's shapes first: two in a row with an open third square must be blocked, and a move that blocks while also advancing your own line is the best play available.

Ninety seconds of pure logic

A round takes under a minute and the board resets instantly, so it works well as a thinking break. It is also the ideal first step before Connect Four, which takes the same idea of blocking and forks and stretches it across a much larger board.

How to play

1. Tap any empty square to place your mark; you and the computer then alternate turns.
2. Get three of your marks in a row — horizontally, vertically, or diagonally — to win the round.
3. If neither side completes a line and the grid fills up, the round is a draw.
4. Take the centre or a corner first, and always block an opponent who has two in a line.
5. Reset the board for a fresh round and try to win in the fewest possible moves.

Tips and strategy

• Take the centre if it is free. The centre square is part of four potential lines, more than any other, so it is the strongest opening move available.
• Learn the two-move fork: a move that creates two threats at once cannot be blocked by a single reply. Recognising it is most of the game.
• Block before you build. If your opponent has two in a row, deal with it now; a clever attack you never get to finish is worth nothing.
• Take corners over edges. A corner participates in three lines, an edge in only two, so corners are strictly more valuable.
• Accept the draw. Against perfect play this game cannot be won, and settling for a draw rather than forcing a losing line is the correct professional instinct.

Who it suits: Perfect as a learning game for a child and as a quick, honest duel for an adult. Pass-and-play turns it from a puzzle into a conversation.

Frequently asked questions

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