Ultimate Tic-Tac-Toe

How to play Ultimate Tic-Tac-Toe

Ultimate Tic-Tac-Toe (also called super tic-tac-toe or meta noughts and crosses) turns the game you played as a child into a genuine strategy battle. Instead of one 3×3 grid you play on nine of them at once, arranged in a big 3×3 pattern, and one clever twist — the “send” rule — links every move to the next. Games are quick, easy to start and surprisingly deep. Play a friend on the same screen, or challenge the computer at three difficulty levels and earn ranking points.

The goal

Win small boards to claim them. A claimed board is marked with a giant X or O covering the whole square. The first player to claim three small boards in a row on the big grid — across, down or diagonally, exactly like ordinary tic-tac-toe — wins the match. X always moves first.

The board

The playing area is one large 3×3 grid, and each of its nine squares contains a complete small 3×3 tic-tac-toe board — 81 cells in total. Positions match up on purpose: the top-left cell inside any small board corresponds to the top-left board of the big grid, the centre cell corresponds to the centre board, and so on. That correspondence is the heart of the whole game, as the next section explains.

The send rule — read this twice!

The one rule that makes Ultimate Tic-Tac-Toe special: where you play inside a small board decides where your opponent must play next.

• On your turn you place your mark in one empty cell of one small board. Look at which of the nine positions that cell occupies inside its board (top-left, centre, bottom-right…).
• Your opponent must make their next move inside the small board that sits at that same position on the big grid. We say your move “sends” them to that board — the app highlights it with an amber border.
• If the board you would send them to is already decided — someone has won it, or it is completely full — the rule cannot apply, so your opponent gets a free move: they may play in any small board that is still open.
• The very first move of the game is also free: X may choose any of the 81 cells. Whatever cell X picks then sends O in the usual way.

Example: you play in the centre board and choose its top-right cell. Your opponent is sent to the top-right board of the big grid and must play there. Suppose they answer in that board’s bottom-left cell — now you are sent to the bottom-left board. Every move is therefore two decisions in one: a good cell for you now, and a destination you are handing to your opponent. Playing a strong cell that sends your opponent somewhere dangerous for you is often a mistake!

Rules at a glance

• X moves first and players alternate — one mark per turn, in an empty cell of a legal board.
• You must play in the board you were sent to; only when that board is won or full may you choose any open board.
• Complete three of your marks in a row inside a small board and you claim it — it is closed and shows your giant symbol.
• A small board that fills up with no three-in-a-row is dead: it counts for nobody and stays closed for the rest of the game.
• Cells of a claimed or dead board can never be played again, even if a move would “send” someone there — that becomes a free move instead.

Winning the match

The match ends the instant either player owns three claimed boards in a line on the big grid — any row, any column or either diagonal. The winning three boards are highlighted in green. Note that only boards you actually won count: a dead (drawn) board blocks every big line that runs through it, for both players, which can decide a whole match.

If all nine boards are decided and neither player has three in a row on the big grid, the match is a draw. This version uses the standard rule: the number of boards each side claimed does not matter — no line, no winner.

Playing the computer (ranked)

In “Ultimate Tic-Tac-Toe vs Computer” you choose your symbol — X moves first, O second — and a difficulty: Easy, Normal or Expert. The computer thinks entirely on your device, so it works offline. Beat it to earn ranking points: Easy +10, Normal +30, Expert +100. Sign in and your best results appear on the leaderboard.

Strategy tips

• Think about where you send your opponent before you think about your own cell. A brilliant cell that hands them the exact board they need is a losing trade.
• The centre board is the strongest to own — it belongs to four big lines. Its centre cell is double-edged, though: playing any centre cell sends your opponent to the centre board.
• Use closed boards as safe destinations. Sending your opponent to a finished board gives them a free move, but sending yourself opportunities: playing a cell whose matching board is closed means your opponent, not you, faces the restriction next.
• Sometimes deliberately lose or dead-lock a small board. Sacrificing a board you cannot save is fine if the cell you use sends your opponent somewhere harmless.
• Watch for double threats on the big grid: two claimed boards in different lines that share an empty board. Just like ordinary tic-tac-toe, two threats at once cannot both be blocked.

Frequently asked questions