← Sichuan calculatorConcealed Kong (暗杠)2 fanConcealed kong (self-drawn, declared face-down). Each concealed kong adds 2 fan.Example winning handWinning tile: 4m▶ Try this hand in the calculatorOpen Sichuan calculator →Other 2-fan patternsSeven Pairs (七对)2 fanPure One Suit (清一色)2 fanAll Pungs (碰碰胡)2 fanAll 2/5/8 (将将胡)2 fan