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East said: I thought you had 3-4 small spades and a
club stack, with 6 spades you should repeat or even jump
to 4S immediately.
On the bidding West is very unlikely to have a club stack. I would think that West's double is card showing, implying minimum spades but a desire to compete. He will likely also have something in clubs though not a stack. So East's pass of the double might be OK with something like Kx of clubs, but not with a stiff.
East's contention that West should be bidding more spades is entirely correct. I think that 2S folowed by 3S is reasonable--the wasted minor suit honors incline me toward caution and +170 on this hand should be good if 4S does make. But with a certain 9 card fit and a probable 10 card fit, West has to keep on bidding spades.
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West said: For all I know your initial double may only
show a penalty pass of diamonds; you should raise to
3S; still better, overcall 1S immediately.
Wrong. Many modern player don't use trap passes at all and follow a rule like Ben's (from Robson-Segal): "All doubles are takeout until we have found a fit". But even those players (including myself) who do play trap passes play this double as takeout--it is a hand that is the right strength but the wrong shape for a takeout double--a hand with short clubs. Typically, there is diamond length but that is not promised.
These are the cases where a trap pass would be indicated:
- (1D)-P-(xN)-P-(P)-X
- (1D)-P-(xN)-P-(yD)-X
Diamonds have not been raised and no new suits have been bid. A misfit is likely and I cannot have the right shape for a takeout double now if I didn't have it over the opening bid. If I have the shape but not the strenth, I sell out on these auctions. In all other cases, the double is for takeout. After diamonds are raised, double on the right shape but not enough strenght for an iniital double is reasonable because the auction shows a fit.
With a minimum double, East must pass 2S. There is merit in an initial 1S overcall, but it could bury a heart fit. Though not the only choice, East's initial pass is perfectly reasonable.
I make it about 80-20 West. West misbid terribly but East shouldn't leave the double in with a stiff.