Posted 2009-November-06, 13:29
1) Assuming 3C is with 7 clubs, seems like you need declarer to have a heart void and 3 diamonds to have any chance of breaking the contract. This gives declarer a 3-0-3-7 hand. In which case, partner has a singleton spade.
So play the 6. Ruff the third diamond, A spade and another to set the contract, even if partner does not have the SK.
If declarer has only 2 diamonds, you are probably not beating the contract anyway (and if declarer has a heart void with 2 diamonds, partner has no spades to switch to!).
2) If declarer does not have a heart void, the contract is probably hopeless (except maybe when he is 1-3-2-7, in which case you can give partner a heart ruff, if he has the CA. But that gives partner 9 spades).
So if you give declarer a 4-0-2-7 hand, you could cash DK, SK and exit a trump to prevent being thrown in with the SK.
Or you could give partner a diamond ruff at trick 2, so that you have the DK exit card later when you get in with the SK, (but declarer can counter that by ducking the DK!).
So perhaps you should hope partner has SA, and cash DK, SK and exit a trump.
Sorry if this is BS.
Simple bidding:
3C - all pass