[inquiry]

IMPS
EW VUL
DLR North
                S-KQ9863
                H-8      
                D-J54    
                C-AJ2

                S-A4      
                H-A9      
                D-AQ6    
                C-KQ8764

No So
1S 2C    2c= game force
2S 3D
4C 4N
4D 5N
7C Pass  

Opening lead SPADE 5.
PLAN your play (East plays the SPADE 2).

[Yzerman]

I really like this hand because it demonstrates that bridge is more than a game of percentages and technical ability.  Table presence and table feel are just as important.

Some assumptions must be made before proceeding into analysis;

(a) Inference #1, non-trump lead
( Inference #2, defense is attacking dummies suit

I do not want to type the remainder of the solution for the sake of letting someone else have the pleasure of being the first to solve problem. But I thought that it was a neat deal to emphasize a few things.

* Moral(s) of story:  

(a) It is good to understand "standard" defensive tactics not only for sake of defending, but for sake
of declaring when opps do something non-standard.

( Table feel and table presence are crucial parts of being a successful player.  Some people are born with it, others aquire it but few would argue against its necessity.