The night watchman's borders

  • strict warning: Only variables should be assigned by reference in /mnt/web118/d3/21/540721/htdocs/sachsentext/sites/all/modules/links/links_related.module on line 197.
  • strict warning: Only variables should be assigned by reference in /mnt/web118/d3/21/540721/htdocs/sachsentext/sites/all/modules/links/links_related.module on line 433.
  • strict warning: Only variables should be assigned by reference in /mnt/web118/d3/21/540721/htdocs/sachsentext/sites/all/modules/links/links.inc on line 1450.
  • strict warning: Only variables should be assigned by reference in /mnt/web118/d3/21/540721/htdocs/sachsentext/sites/all/modules/links/links.inc on line 1450.

The night watchman is facing the following puzzle:

Fill the grid with tetrominos (4-units) in the colors red, blue and yellow. Tetrominos of the same color can only touch on the corners. An orange line is between a red and a yellow cell, a green line between a yellow and a blue cell. A purple line is between a blue and a red cell.

The night watchman's borders