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1st    6 ball  ---  6 ball
6 C6 ]! Z# C' ]6 Q  Z$ I% C" x4 ~tvb now,tvbnow,bttvb2nd, take the heavy side  3 ball  --- 3 ball
7 v9 C9 a" C0 s* _third,  take the heavy side, random pick to 1 ball ---- 1 balltvb now,tvbnow,bttvb* H! R) i# e' y/ A9 _
if which side is heavier, that's the heaveir side
. t0 C( v* P8 k8 u公仔箱論壇if they equal , then the other one is the heavy one