[helene_t]

Suppose you play a nebolous 1♣ (2+) as most people in NL and Italy do. Partner open 1♣, it gets doubled (t/o indeed). You redouble, and LHO passes.

First question is what LHO's pass means. Suppose the answer is "in principle penalty, but she may take a gamble with a weak 2335 or maybe even 3334". How many clubs should partner have in order to sit? And, related to that, how many clubs should you have in order to redouble?

Would your answer differ if 1♣ was Polish, thus more likely to be a 2- or 3-card than in the Italian and Ducth standard systems?

Would your answer differ if opps answer was less specific, say "could be either penalty or you-choose, I'm expected to use my table precense"?

Would your answer differ if it was a (Precision) 1♦, thus whoever wants to run to the other minor must do so at the 2-level?

Anyone who has abandoned the businees redoubles at low level? (MeckWell plays a redouble of 1♦ as transfer to hearts).

[han]

I will only answer your last question: Yes, many people here don't play business redoubles but transfers (inquiry, pclayton, cherdano and myself I know of, but probably more). When I do play businesss redoubles I rarely use it (I usually end up bidding a major or support partner or whatever).

[cinvent77]

After a business redouble LHO shouldn't be able to pass for penalties Hence he probably has no preference. I'd expect business redoubles to show a good hand in points (say at least a decent 10 HCP), not necessarily clubs. The more clubs redoubler has, the more likely that the opponents can escape. Perhaps another meaning to redouble may be more profitable.

[inquiry]

Business redoubles at the one level are not all that useful. For one thing, they usually have a place to play, so a redouble can be used for somethng that occurs at a higher frequency.

Now if after your 1♣ bid on 2+♣, if a DOUBLE is penalty (rather than takeout), maybe a penalty reodouble could be revisited, but who plays that double as penalty?