----------------------------S A Q 8 5 3
----------------------------H K 7 6 4
----------------------------D A J 10
----------------------------C 6
S J 10 6 4-----------------------------------------------S 9
H Q J 2--------------------------------------------------H 5
D K Q 6--------------------------------------------------D 7 5 4 2
C 8 5 4--------------------------------------------------C K Q J 10 9 7 3
----------------------------S K 7 2
----------------------------H A 10 9 8 3
----------------------------D 9 8 3
----------------------------C A 2

East
4C Pass Pass Double
Pass 5H Pass 6H
Pass Pass Pass

Leading : DK

DA吃進,拔HA,K,發現西家有一張王牌贏墩.
現在不能舉手投降,如果西家有4張黑桃,定約還是有希望.

出SK,注意東掉下了S9,
then S2, when west follow low spade, use S8 finesse.

注意:S 2-3 didn't help you, west must have 4 Spade

專家打出深飛是有邏輯推理的.