IMPs. The opponents open a weak no trump and you make a penalty double promising 16+ HCP (or 15 and a good lead). LHO bids 2♦ as a transfer to hearts. Your agreements (with this partner) are that partner will double for penalties, pass is forcing and a new suit is weak.
Given these agreements, how would you interpret the following actions from partner? (a) 2♠, (b) 3♠, © 4♠, (d) Pass, then when RHO completes the transfer and you make a penalty double, partner removes the double to spades, (e) Partner bids 2♥, then removes your subsequent bid (3NT maybe?) to spades.
You have a little more than you might have for the double. Will you bid further? In which auctions?
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If pass is forcing then perhaps you should agree that immediate bids, including the 2♥ cue bid are non-constructive. .e.g
-- 2/3/4♠ = PRE.
-- 2♥ = CUE, T/O e.g. 4045.
-- 2N = UNT, Minors
With this understanding, perhaps, after (1N) X (2♦) P (2♥) X (P) ??,. you should agree a kind of Lebensohl.?