Phil, on 2011-January-20, 19:37, said:
I won't analyze the start of the hand, but its quite clever for declarer to play low on the ♥J, don't you think?
I did state "reasonable defense". I thought when you said "Right or wrong" you plug away with a spade at trick 4 that you clearly knew that was a mistake. The correct "defense" is to return a club at trick four (note, I returned a club above as well in reply to the suggestion that south ruff his losers in dummy). Sure the hand might make if you defend like a calf (reading Calf, really good book). I had no idea that when you asked "Several ways for declarer to make this. See em?" you were referring to specifically at trick 9. When I read that, I assumed that there were "several ways to make it against any defense" not against bad defense.
Partner needs the heart ACE for his opening bid (and if he is missing that, you are not defeating 3D). Partner lacks
♣KQ for the low club shift, if South has both of those, you are not betting this. So partner needs a club honor, the heart AJ. With that background, a club continuation at trick four (after your first three tricks) seems clear.