Source: www.acblunit390.org
Rubensohl: ( Kantar – Lesson by Bob Crosby)
Lebensohl by responder over a strong NT was invented so that you can compete better or show game forcing hands immediately.
The bad part of Lebensohl is that you must go thru a relay to find out partners real suit so when RHO competes you might never know that you have a fantastic fit. In today’s game, the opponents always seem to use their toy to disturb your NT but RHO is getting into the act more & more to re-preempt the auction.
Jeff Rubens from the Bridge World thought it was a better idea for partner to announce the suit directly with a transfer but your strength later with a D.S.I.P. double (“Do something intelligent partner” double)-or a Q bid or by bidding again. You build your system around hand evaluation concepts.
Rubensohl was built on the transfer concept.
The Problem
Example 1
With
xxx
AQxx
AKxx
Kx it might be a good idea to bid 5
since partner has announced hearts with her transfer .
Partner’s hand is
x
Kxxxxx
xx
Q10xx but playing Lebensohl he would have bid 2NT so with the same 4
bid by RHO the partnership is poorly placed.
Competing for a partial is important as double partial swings are expensive.
Example 2.
W |
N |
E |
S |
|
1NT |
2 |
2NT |
3 |
? |
|
|
You hold
xxx
Ax
Axxx
AKxx and guess that partner was competing in hearts so you pass.
Wrong, partner had diamonds .
With
x
xxx
QJ10xxx
Qxx, you are on a hook for 5
but you sell out for 3
unaware of your huge diamond fit.
The Solution
The device Rubens suggests to prevent RHO from jamming you is to
replace the Lebensohl structure with a transfer structure.
This allows the NT opener to know the suit immediately
By the simple act of accepting the transfer, he can be dropped by partner when his intention was just to compete.
When partner’s intention was to force, he can bid game or Q-bid or bid Blackwood or whatever.
Another brilliant part of this structure is that you can define meanings to transferring into their suit.
Transfers also allows the concept of “super accepts” which can also be used in this structure
Usable bidding with two suiters is preserved with transfers along with the super accept understandings.
All this & the contract is right sided !!!
How it Works
When the opponents bid artificially or bid the minors naturally, Lebensohl or other understandings are on.
When the opponents make artificial doubles or 2
bids showing a single suit, we just ignore them and systems are on.
A double on an artificial 2
bid is simply Stayman or cards ( partnership preference ) .
Rubensohl applies after a 1NT overcall also with RHO interfering.
After a 1NT opening bid and a natural 2
or 2
overcall (also playable if the overcall shows the bid suit along with an unknown minor
.
Example 3
W |
N |
E |
S |
|
1NT |
2 |
? |
Double= penalty, D.S.I.P on terrorist vul (us vul them not)
2
= Natural, not forcing.
2NT= Transfer to 3
3
= Transfer to 3
3
= ( transfer to their suit ) Stayman or 3NT without a stopper
3
= transfer to 3
3
= both minors (eg
x
xx
AQxxx
KJxxx)
3NT= Natural with a heart stopper
4
= Gerber (for aces only)
4
= Transfer to 4
(If followed by 4NT, Keycard Blackwood)
4NT = Natural
After a 2NT transfer to 3 you can:
(1) Pass
(2) Bid 3
or 3
, natural, showing 6-4 with six clubs, forcing.
(3) Bid 3NT slam try in clubs
After a 3 transfer to 3, you can:
(1) Pass
(2) Bid 3
or 4
to show six diamonds and four of the bid suit.
(3) Bid 3NT, a slam try in diamonds
After a 3 transfer to 3, you can
1. Bid 3NT and give partner a choice of game contracts.
2. Raise to 4
(slam try as you did not bid Texas transfer).
3. Bid a new suit, natural, probably 5-5.
4. Bid 4NT, natural, with five.
After a 3 transfer to their suit
1. Accept the transfer to their suit with no major or stopper
2. Bid your major
3. Bid 3NT with a stopper
Note: Transferring into their suit should also be a way of asking partner if he has a stopper in their suit as well as Stayman.
When the NT opener does bid a 4 card major & partner now bids 3NT he does not have a stopper. When you do not do either, scrambling for the best contract commences.
Example 4: NS Vulnerable
W |
N |
E |
S |
|
1NT |
2 |
? |
Double = penalty – D.S.I.P. (Do Something Intelligent, Partner)
2NT = transfer to 3
3
= transfer to 3
3
= transfer to 3
3
= Stayman or 3NT without a stopper (transfer to their suit)
3
= both minors
3NT= Natural, with a spade stop.
4
= Gerber
4
= Transfer to 4
(If followed by 4NT, Keycard Blackwood)
4NT = Natural
Responses are consistent with the heart overcall. With this treatment , the transfer always shows the suit immediately, in case RHO interferes.
Rubensohl, like Lebensohl …
Applies when partner makes a 1NT overcall and they interfere.
You can give a meaning to transferring into the 2nd bid suit if there is one.
D.S.I.P. doubles rather than penalty doubles apply in these auctions also when they interfere after a 1NT overcall by partner.
If RHO Competes
Understandings are also necessary of RHO gets in the act , but these are just common sense. As per other Bridge principles , if they double,
Bidding is the weakest action.
Pass denies a fit and leaves room for a penalty double if there is one .
A XX is punitive & denies a fit with your suit.
A Q-bid or 3NT are super accepts even with RHO interfering.