Sudoku x 4

The goal of the game (aka Sudoku or Number Place) is to fill in the empty cells, using the numerals 1 through 9, placing one number in each cell so that each column, row, and 3x3 region contain the numbers 1-9 exactly once. Sharpen a pencil, print this page, and get started.

Game:  

        5     8  
8   3 2         4
  6       7 2    
    5 6       2 3
4       3       8
6 3       1 9    
    8 9       1  
7         8 5   9
  1     4        
Difficulty: starstarhalf star
Skill Level:

Game:  

  7       5 9    
    1 7       5  
  6   3 1        
6   4 5       8  
    5   3   4    
  2       4 6   5
        4 8   9  
  8       3 5    
    3 1       6  
Difficulty: starstarstarhalf star

Game:  

    4 9         3
      1 7     4  
      5 6   7    
3         2      
  4         3 5  
5           8 1 2
    9           6
2 3     8        
  6   7   9      
Difficulty: starhalf star

Game:  

G a m e
N o t
F o u n d
starstarstarstarstarstarstarstarstarstarstarstarstarstarstar
EasyMediumHardVery HardDiabolical