idnr: 4293
3      
    1  
  2    
      3
Difficulty: Very easy (0)
idnr: 3572
      4
  1    
    3  
2      
Difficulty: Super easy (0)
idnr: 3677
3 4    
  3   2
2   3  
    4 3
Difficulty: Super easy (0)
idnr: 300
      1
    3  
  3    
4      
Difficulty: Very easy (0)