Ted's Bridge World Simulatron

Responding to Notrump with Bad Hands — page 4

Conclusions

Whew!  Mere mortals cannot be expected to retain all the information from analyses of more than 430,000 deals, so a friendly chart is in order.  This one details SIM's suggested actions for each hand type:

HAND PATTERN STRATEGY
4-3-3-3 All Pass
4-4-3-2 4.4 majors
4.2  or  2.4 majors
4.3.2.4  or  3.4.2.4
4.3.4.2  or  3.4.4.2
4.4 minors
Garbage Stayman
Xfer to the major w/ 0-2 ; else Pass
(same)
2C, then Pass
Pass
4-4-4-1 4.1  or  1.4 majors
4.4.1.4
4.4.4.1
Xfer to the major
Garbage Stayman
2C, then Pass w/ 0-5 ; else Garbage Stayman
5-3-3-2 5-card major
5 clubs
2.3.5.3  or  3.2.5.3
3.3.5.2
Xfer to the major
3C exit w/ 0-2 ; else Pass
3D exit w/ 0-2 ; else Pass
3D exit w/ 0-3 ; else 2C, then Pass
5-4-2-2 2.2.4.5
2.2.5.4
4.2.x.x  or  2.4.x.x
5.4.2.2
4.5.2.2
3C exit w/ 0-6 ; else Pass
MSS/3D if available ; else 3D exit
2C -> 2M or 3m exit if available ; else minor exit
Xfer to 2S
Garbage Stayman
5-4-3-1 4.5.x.x
5.4.x.x
4.3.5.1  or  3.4.5.1
4.3.1.5  or  3.4.1.5
1.4.x.x  or  4.1.x.x
3.1.4.5  or  1.3.4.5
3.1.5.4  or  1.3.5.4
Garbage Stayman
Xfer to 2S
2C, then Pass
Xfer to the 4-card major
Xfer to the major
2C -> 3-card major or 3C if available ; else 3C exit
2C -> 2D/3-card-major or 3D if available ; else MSS/3D exit
5-4-4-0 0.4.4.5
0.4.5.4
4.0.4.5
4.0.5.4
4.4.0.5
4.4.5.0
4.5.x.x
5.4.x.x
2C -> 2D/2H or 3C  [pass 2D only w/ 0-2]
Xfer to 2H w/ 0-2 ; else MSS/3D exit
Xfer to 2S w/ 3+ ; else MSS/3D exit
xxx
Garbage Stayman
2C, then Pass
Garbage Stayman
Xfer to 2S
5-5-x-x Both majors
One major
Both minors
Garbage Stayman
Xfer to the major
5-5 minor exit
6-3-x-x Long major
Long minor
Xfer to the major [game w/ 7+]
Play in the minor
6-4-x-x 6-card major
4-card major
No major
Xfer to the major [game w/ 5+]
2C -> 2M or 3m if available ; else minor exit
Play in the long minor
6-5-x-x 5.6.x.x
6.5.x.x
Both minors
One major
Garbage Stayman
Xfer to Spades
5-5 minor exit
Xfer to the major
7-2-2-2 Long major
Long minor
Xfer to the major [game w/ 5+]
Play in the minor
7-3-x-x Long major
Long minor
Xfer to the major [game w/ 4+]
Play in the minor
7-4-x-x 7-card Major
4-card major
No major
Xfer to the major [game w/ 3+]
2C -> 2M or 3m if available ; else minor exit
Play in the long minor
7-5-1-0 7-card major
5-card major
Both minors
Xfer to Game in the long major
Xfer to the major [game w/ 3+]
Play in the long minor

So what have we actually learned?  Most everyone follows at least these few rules:

We now know, however, that there is so much more to it than that.  I believe that the computer's findings can be summarized with these guidelines:

SIM's Rules for Responding to Notrump with Bad Hands

Note that hands of fewer than three high-card points seem to fall into a special category.  With such weak holdings, every effort should be made to get out of a notrump contract.  That directive seems worth remembering.

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Good luck with your new bidding system, which now includes Garbage Stayman and the ability to sign off in a minor after a major-suit enquiry.  Of course, if you never pick up bad hands, or if your partner is not allowed to open 1NT, then you might have decided just to continue wallowing in your existing methods.

Should someone actually wish to peruse the entire database of computer studies, here it is in Wordpad (RTF) format:

– SIM's Database Analyses of Weak-Hand Responses to Notrump –

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