Best played FULL SCREEN. Select one of 4 puzzle types or free play. Drag the tiles on/off the play area with the mouse. Click on a tile to rotate - (left:anti-clockwise, right:clockwise). Long Click to show info about a tile. r - resets play area to start position. g - toggle display of the grid. click i for puzzle reminder.
For rules of Tantrix see the official web site http://www.tantrix.com/ 2014-08-02 - Fixed pyramid game tile set. Now only get the 15 tiles needed to solve the puzzle.