Quadruple Clue Sudoku

  • 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.

Fill in the grid so that every row, every column, and every 3x3 box contains the digits 1 through 9. Each set of 4 small digits stands for the number in the four adjacent cells to this set.

Quadruple Clue Sudoku