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West is going to have to make that argument - I'm not going to coach him, and if East thought that West's bid was invitational, why didn't he bid game?
West can't have 5 spades...if he had an invitational hand with 5 spades, then he'd have bid over 1
♣. While West has 9-10 hcp which should be sufficient for game, East's points look very poorly positioned- both the heart and club finesses should be off, and any diamonds West has may be under North's only honors. I don't fault 3
♠ here.
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The NS cards could be rearranged so that the auction makes sense in SAYC
Not to hard to figure out the shapes here. South has 1-4-4-4 distribution. North only has one bid, so it seems likely that his distribution is 4-x-5-x.
Yes, I know, I'm making a hand again.
This is from East's persective. West is minimum for an invite, and 4
♦ still goes down. Every bid is what I would expect except the 4
♦ call, which is bad but not impossible. Meanwhile, 4
♠ goes down at least 2: move stuff around a little, and it only goes down 1, but 4
♠ is still hopeless: the auction has told you that everything is going to fail.