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.

First select a Style:  

Player One:   using 

vs.

Player Two:  

Computer plays automatically
Computer less savvy

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

Rules

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

Winning lines

To get your head round 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 ⇒

XXX
 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
   
   

Version info for v-2.1.3

From http://4dtictactoe.me/game/4D/index.cgi
on 21st Nov 2024 at 00:36

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