- Top
 
        
        - 4 · Society, Civilization, Culture
 
        
        - 43 · recreation, amusement
 
        
        - 43C · sports, games and physical performances
 
        
        - 43C5 · games of calculation and chance, e.g.: card games, gambling, puzzles, etc.
 
        
        - 43C52 · board-games
 
        
        - 43C521 · chess
 
        
        - 43C521(+2) · chess (+ the contest (sports, games, etc.))
 
        
    
    
    
    43C521(+24) · chess (+ public (sports, games, etc.))