Hannie, on Sep 22 2007, 12:58 PM, said:
Does anybody play that or are you making this up?
I'm just making this up. But you could play it if you want, and it's pretty simple as you can see.
As to whether this is a good idea, that's a separate issue. In designing your major suit raises, you have to decide if you want to allocate 2 different bids to show essentially the same hand type (one with even # of trump honors, one with odd #). If you do, say 1
♠-3N (unknown weak splinter, odd #) and 1
♠-4
♣ (unknown weak splinter, even #), you have to decide the relative value of the lost 4
♣ response (say as a GF
♣ splinter) versus the benefit of the often encrypted auctions which make it harder on the opponents during the bidding and on opening lead as compared to a normal auction. I would guess that in most cases it doesn't make sense to use encryption since the cost of giving up a second useful response seems too high to me.
However, if you play RKC Blackwood for example, you might as well encrypt the 5N king ask since you'll only do this when you've confirmed all the 5 key cards so you'll both know that your side has the AK of trump and you can use your trump AK parity to encrypt the further bids. For example, playing specific kings, you can hide which is your cheapest king through encryption, or if opener makes a grand slam try asking for a specific king that can be encrypted as well.
Encrypted Drury is a reasonable alternative to regular 2-way Drury which I described in an earlier discussion.
matmat, on Sep 22 2007, 01:11 PM, said:
i was under the impression that encrypted defensive signaling was outlawed, but encrypted bidding was not.
You are correct, at least regarding the rules in the US. The relevant section covering most encrypted bidding is this one -
ACBL General Convention Chart said:
"ALLOWED"
"Responses and Rebids"
"7. ALL CONSTRUCTIVE CALLS starting with the opener's second call."
1♠-3NT*
4♣**-4♦***