Sudoku Solver from www.kildimo.com
 
 
 
  9 by 9
Click here for a 9 by 9 Sudoku Solver page. - blocks are 3 by 3 and valid values are 1 thru 9.
 
     
  16 by 16
Click here for a 16 by 16 Sudoku Solver page. - blocks are 4 by 4 and valid values are 0 thru 9 and A thru F.
 
     
  16 by 16 - Trial
Click here for a 16 by 16 Sudoku Solver page with pre-filled values. This was a competition puzzle issued by the Irish Independent in September '05.