Score: 19

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



Score: 20

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



Score: 20

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



Score: 20

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



Score: 20

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