The Benko Gambit is a chess opening
		
		 
	 
	
		
			To start: White moves the Queen’s pawn forward
		
		 
	 
	
		
			Black’s response is to develop the knight
		
		 
	 
	
		
			White puts his pawn here to control the center
		
		 
	 
	
		
			Black counter attack in the center
		
		 
	 
	
		
			White advances this pawn to close off the center
		
		 
	 
	
		
			Then black offers this pawn on the flank (for free)
		
		