4D Tic-Tac-Toe Setup

Use the logo (top left) to Return or Escape

Computer vs. Computer on automatic play is a loop.
To escape the loop click the logo in the top left corner.

For 'Computer plays automatically'
auto-refresh must be enabled.

The board will show lines that have just added to the score.

Rules

Each of the two players uses 'X' or 'O' as a token, and they take it in turns to occupy available squares.
Any line of three occupied squares (in any direction or dimension) scores a point.
The winner is the player with the most points when all available squares have gone.
The most central square gives too much advantage and is not available to either player.

Winning lines

To get your head around it, consider Two and Three dimensions first...

» In two dimensions, X gets two points for going in the top left hand corner in this situation ⇒

X	X	X
	X
		X

» In three dimensions with one board conceptually above the other, X gets three points for going in the top left hand corner of the left grid in this situation ⇒

X
X
X

Lower

X
X

Middle

X

X

Upper

» In four dimensions there are nine grids, so even more possibilities for scoring. The top left 'X' would have made four points here ⇒

X
X
X

X
	X

X

		X

	X

		X

⇧