VUL:NS result:North6S-1 ns:-100 N: S:K7642 H:AQ D:Q7 C:9742 W: E: S:985 S:Q3 H:KJ987 H:543 D:108432 D:J95 C: C:KQ863 S: S:AJ10 H:1062 D:AK6 C:AJ105 NS:PREC EW:PREC deceptive bid forbid [N] [E] [W] 1S! - 4NT! 5C 5H! - 6C! - 6S - - - first round: 1: [E] CK CA S5 C2 2: [W] S8 S2 SQ SA question of judgement: north open 1s,and south 4nt ask aces,continue west bid 5C with club void,NS seem not use dopi or other tools,last bid is 6s. leading is CK and ruff by west,now NS call director say 5C shd be alertd.and if 5C alert,they can double 5C or rejust contract to 6NT . director say that 5C shd be alerted,and tell west continue play as NT,WEST second round lead S8, result adjust 6s-1 to 6nt mk. my question is : 1.5C shd be alerted?why?and director how to deal with this bidding. 2.who will lead second round?still west?,if CA win CK,why not south turn? thx in advance