Posted 2018-November-09, 11:04
I'm late to this thread, but was astounded at the earlier responses, where most elected to play on clubs.
First point: forget about tables where they reach 3N. You are not competing against them no matter what you do unless you totally screw up and go down 1 when someone in 3N is making 8 tricks, which seems remote...if the cards are that friendly, you'd really need to screw up to take only 6.
I was going to write a long analysis, but it really would be very long and would have to contain several simplifications, in terms of the odds within the black suits, so I gave up.
Really simply: playing on spades virtually assures a plus score.
Plus, and this is very important at mps in a less than truly expert field, when spades break 3-3, we have a great chance to have the opps misdefend. I would pitch 2 clubs on the spades....now all I need is for the opp with 3 clubs to pitch one...and they can't stop me making 8 or 9 tricks...the number depending on the heart break (ok, maybe 7 tricks but I'd be betting no-one has 6 hearts).
This makes playing on spades far more attractive than the 35.5% of a 3-3 break (a priori) might suggest.
On the other hand, we need a lot of luck in clubs to be able to get anywhere....while 1=4 with the K on our right is useful, I will assume that we have about a 50% chance of getting a second club trick. We have about a 35% chance of running the clubs for one loser.
If we can't set up the clubs in two rounds, we are probably going down. We have at best a 50% chance of setting up the clubs and 35% of that time we don't need to do it now...we can run the spades first. So playing on clubs first helps us ONLY when spades do not break and clubs behave...or about 33% of the time.
Note that when clubs don't behave, the defence is trivial and we have no upside. Playing on spades, meanwhile, is not merely slightly higher percentage against perfect defence but offers a significant likelihood of inducing misdefence.
My gut told me that playing on spades was clearly right. My analysis surprised me (it was far more complex than suggested here) but still confirms what my gut told me: playing on spades is significantly superior to playing on clubs.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari