auuchu

huh?? How tough is it?
; t: }0 D; V* K/ K! E1 O1/. break it down to 2 section, 6 balls on each side. Put which every section shows lighter away
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2/. Break the more heavy section in to 2 sections again, which is 3 balls on each side. Keep the more heavy side again.) t, R( n5 I5 G2 ]- t! f

/ ~" p6 l( R; c( Y5.39.217.773/. Pick 2 balls and put them on each side from the remaing 3 balls. If they are equal weight, the ball on the table is the more heavy one, if one side is more heavy than the other, that will be the more heavy one.
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Easy. Tough question? For whom? I did it in 1 minute.