[rr9000]

Pard and I play Rosenkranz doubles, but we had an auction come up where we weren't sure whether it should apply.

(1S) P (1NT) 2C ; (2H) to you - what do X and 3C show?

According to http://www.bridgebum...ranz_double.php , for instance, you have to be able to raise at the 2 level for Rosenkranz to apply, but I'm not sure why this restriction should be in place after a 2 level overcall. It's still a raise showing an honor versus a plain single raise. Thoughts?

Thanks!

RR9000

[barmar]

I'm not sure why it should be restricted like that. It's not like a support double, where you have to worry about the common situation where partner bid a 4-card suit. Assuming you would normally bid 3♣ with 3-card support, you can still distinguish whether you have an honor by using or not using the Rosenkranz double.

[0deary]

It looks like the 1N bidder has a red hand so will likely support a major, and unlikely you will buy the contract in clubs. Chances are you will be on lead (after your partners 2 club overcall) anyway: I suppose you lead a small club with an honour or a high one without and all that seems pretty routine without worrying about a Rkz doubles or raise?

Should the 1N bidder get to 2/3NT partner owns the clubs and I presume will lead a club whether or not you x or 3C, and your honour will go up trick 1 anyway, so again I’m struggling to see a big opportunity: using a Rkz doubles look rare birds? They exclude other more common doubles- penalty, co-operative or just “do the right thing partner” doubles that might be more useful?

I’m not really sure what “used through the 2 level” means, but I found this if of any use:

“If the bidding has gone 1d/1h/1s, a Rosenkranz Double of the 1 spade bid is purely informational”

http://tommybridgebl...-redoubles.html

Forgive me, that is not desperately supportive or informative for you poser, but thats all i can offer. Good luck!