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6x6 Tic Tac Toe

Four in a row on a 36-square board — our biggest, most open game.

Opponent
Difficulty
YouX · moves first
BotO · Medium

Your move

How to play 6×6 tic tac toe

X goes first, players alternate, and four in a row in any direction — across, down or diagonally — wins. If all 36 squares fill up without a line, it's a draw.

A 6×6 board has 54 winning lines, and each of the four central squares sits on 11 of them. That's why games are decided in the middle: own it and you have threats in every direction.

Tips

  • Going first matters here. With perfect play, four in a row on 6×6 is a first-player win — unlike 3×3, 4×4 and 5×5, which are draws. Nobody knows that winning strategy by heart, so it's still a real fight.
  • Build open threes near the centre. Three in a row with both ends free can't be stopped: block one end and the other completes four.
  • Practise defence by playing as O against the bot, and block every open three the moment it appears.

Read how the bigger boards were solved in Is tic tac toe solved? Or switch on Fade mode: on 6×6 each player keeps six marks and the oldest one vanishes.

Questions people ask

Who wins 6x6 tic tac toe with perfect play?

The first player. Four in a row on a 6×6 board is a first-player win — it already is on a 6×5 board. Nobody knows the winning strategy by heart, so real games stay open.

How many in a row do you need to win 6x6 tic tac toe?

Four, on our board. That makes 54 winning lines on 36 squares, and each of the four central squares sits on 11 of them.

Can I play 6x6 tic tac toe against the computer?

Yes. Choose Easy, Medium or Hard above, or switch the opponent to Friend to play on one device.

More ways to play

Play a friend onlineNew: create a game, send the link, and play live on two devices. CLASH — everyone moves at onceNew: tic tac toe for 2–4 players. Pick the same square as someone else and it cracks. Classic tic tac toeThree in a row on the board everyone knows. 4×4 tic tac toeFour in a row on 16 squares — only 10 ways to win. 5×5 tic tac toeFour in a row with room for traps: 28 winning lines. Infinite tic tac toeOur Fade mode on 3×3: keep three marks, lose the oldest. 2 player tic tac toePlay a friend on one screen, with Best of 3. Impossible tic tac toeA bot that plays 3×3 perfectly. Can you draw?