pran, on Jan 14 2010, 05:56 AM, said:
The player bidding 2♦ confirmed on a direct question that he believed their transfer system was "on".
OP said:
East, who holds this hand, thinks that after 1N is doubled, transfers may still apply
I read that as "knows it's not been discussed but thinks they might, so doesn't want to risk a direct 2
♥", rather than "believes that transfers are on".
pran, on Jan 14 2010, 05:56 AM, said:
If you can convince me that you would (always) pull 2♦X to 2♥ (and not leave this choice to partner after all) in the following situation I just might believe you and accept it:
Pass 1NT - Double - 2♦ (alerted and explained as transfer to Hearts!)
Pass - Pass - Double - ?
If I genuinely don't know what the system is and bid 2
♦ here in an effort to escape to 2
♥X or anything undoubled, then I would consider it a violation of L16/L73 to use the alert+explanation to 'know' that partner has diamonds and pass. This is very different to if I thought transfers were off, or if I thought they were on.
pran, on Jan 14 2010, 05:56 AM, said:
Any player who "admits" that the missing alert of the 2♦ bid makes him pull to 2♥ is in my opinion seriously violating Law 16B1{a}
Sure, but I don't think there is a question of that.
pran, on Jan 14 2010, 05:56 AM, said:
And just to repeat it: The partnership had an undisputed agreement of using transfers after 1NT opening bids. There was, however, an apparent misunderstanding whether transfers were "on" or "off" after intervening doubles. (I believe a common agreement among partnerships is system "on" after pass and Double, "off" after bids"?)
Actually, I would expect them to be off after double, in order to play in 2
♣ when responder holds xx xxx xx xxxxxx (or some more complicated system involving a pass forcing a redouble if it's been discussed).