Puzzle #1
Puzzle #2
Puzzle #3

  4       9   2  
  9   8 2     1  
    2     3   4 7
   
    8     5     2
2 3   4       9 6
1     2   6 3    
   
8     5          
  2     6 7   3 8
      9       5  

Solution
The rules are simple: You must get the numbers 1 through 9
in each row, column, and square without repeating them.
(Note: If you get an error on a solution page, it's because
the solution hasn't been entered yet.)