Handling 2 suited interference in a suit auction
#1
Posted 2009-January-03, 21:51
One of the four areas that we are reworking to enhance playability, is how we handle 2 suited interference after we open one of a suit (FYI: we play a strong club, and our diamond opening is often 4 cards, along with 4 card majors and canape).
We currently use lo-lo versus michaels and unusual NT overcalls, but wanted to ask if there were some other variants to consider.
#2
Posted 2009-January-04, 04:17
I'm not used to a strong club context which may change things slightly. The 4CM base probably changes things even more, but it may make the distinction between 3- and 4-card support more useful. We play in summary as follows:
x shows interest in defending, forcing for one level, first double from either side doubleton take-out. If their bid includes the suit bid (e.g. 3C ghestem showing clubs & another suit) then double is take-out, no forcing pass. Pass then double as responder is trump stack penalties.
Where they have only defined one suit (e.g. 1S - 2S Michaels) we play transfers. For example:
1S - (2S) hearts & a minor:
2NT = clubs
3C = diamonds
3D = 3-card spade raise
3H = good 4-card spade raise
3S = weak
Higher = fit
Where they have defined both suits (e.g. 1S - 2S = hearts and diamonds) we may play
2NT = clubs
3C = 5 clubs, 3 spades, invitational
3D = 3-card raise
etc
But sometimes the amount of room has changed, e.g. 1D - 2D (majors) now
2H = forcing with clubs
2S = forcing with diamonds
2NT = both minors, constructive
3C = weak
3D = weak
3M = splinter
That's why we need 3 pages, because the exact methods depend on the level of their overcall, and the amount of definition in their 2-suited bid. As we play a 1C opening as 2+ clubs, they can play any defence so there's also the possibility of their 2-suited overall having no anchor suit (we play transfers then as well).
#3
Posted 2009-January-04, 05:58
#4
Posted 2009-January-04, 19:42
Thank you for your gracious insight tendered.
We play xfers frequently in and out of competition, and also in our strong club structure, so conceptually, it would be normal running for us. We document often in our method, but we wanted to have a look around with this area of our system. We play xfer Lebensohl over our 1C interfered auctions already; we wanted to see if we could build a more logical mousetrap.
#5
Posted 2009-January-04, 19:58
What we do is:
When two suits (opponents) are known:
X = Strong - Subsequent doubles are penalties
Lowest Cue = Invitational Raise
2NT = GF raise
3-suit = constructive raise 5-8 or so
Highest cue = forcing bid in the unbid suit - bidding the suit is a negative free bid
When one suit is known:
X = Strong - Subsequent doubles are takeout
Cue = Invitational Raise
2NT = GF Raise
3-suit = 5-8 constructive raise
New Suit = negative free bid
I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon
#6
Posted 2009-January-04, 20:13
the awkward one is:
1♣ (2NT) diamonds and hearts
now the invitation is above three of our suit.
Also when the bid is 2NT the GF raises we put into the cue.
I actually quite like using 3NT as the GF raise to resolve the strength ambiguity but that is hard on the memory. Natural 3NT bids go through a double.
I believe that the USA currently hold only the World Championship For People Who Still Bid Like Your Auntie Gladys - dburn
dunno how to play 4 card majors - JLOGIC
True but I know Standard American and what better reason could I have for playing Precision? - Hideous Hog
Bidding is an estimation of probabilities SJ Simon
#7
Posted 2009-January-04, 22:33
#8
Posted 2009-January-04, 23:03
#9
Posted 2009-January-05, 11:07
TylerE, on Jan 5 2009, 12:03 AM, said:
What are the dates for this tournament? Not sure if I will be in town or not.
So many experts, not enough X cards.
#10
Posted 2009-January-05, 12:48
#11
Posted 2009-January-05, 21:21
My understanding as of now, is that Larry and I are doing the entire thing - we find out Wednesday if the baptism of Larry's grandson gets in the way.
#12
Posted 2009-January-23, 05:59
Larry
C3: Copious Canape Club is still my favorite system. (Ultra upgraded, PM for notes)
Santa Fe Precision ♣ published 8/19. TOP3 published 11/20. Magic experiment (Science Modernized) with Lenzo. 2020: Jan Eric Larsson's Cottontail ♣. 2020. BFUN (Bridge For the UNbalanced) 2021: Weiss Simplified ♣ (Canape & Relay). 2022: Canary ♣ Modernized, 2023-4: KOK Canape, 2025-6: Canape!

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