idnr: 4591
       
  1 2  
  2 4  
       
Difficulty: Very easy (0)
idnr: 1503
2   4  
      4
4      
  4   3
Difficulty: Super easy (0)
idnr: 3306
4 3    
3 1    
    1 3
    3 4
Difficulty: Super easy (0)
idnr: 6030
1   4  
4   3  
  3   4
  4   1
Difficulty: Super easy (0)