Defence to 1NT

Page 8

by David Stevenson

This article is continued from here

Any defence to 1NT is permitted at ACBL MidChart and EBU Levels 4 and 5 (and the former Level 3, and Level 2 in fourth seat or after passing), so all of the following are permitted. The chart below also shows which defences are permitted at ACBL GCC, and EBU Level 2 (second seat).

Pages 1 to 2	Double is for penalties, 2/ are natural.
Page 3	Double is for penalties, 2/ show 2-suiters.
Page 4	Double is for penalties, 2/ show varied hands.
Page 5	Double shows a one-suited hand.
Page 6	Double shows a two-suited hand, 2/ are natural.
Page 7	Double shows a two-suited hand, 2/ show varied hands.
Page 8	Double shows a varied shape hand, 2/ are natural.
Page 9	Double shows a varied shape hand, 2/ show varied hands.

Note that or + means diamonds or the majors, and not a red suit plus spades, which would be expressed as / + .

If you want to print these diagrams see here for a printer-friendly set of pages without all the headings, and with only two diagrams per page.

Name:	TNT	French Against Notrump	Kleinman Against Notrump	Morgan Against Notrump
Dble	or + or + /	or + or + /	or + or + /	or + or + /
2	+ or +	or + or +	or + or +	or + or +
2		+ + / or + +	4 + 5//	4/ + 5/
2
2
2NT	+	+	+	+
3
3
ACBL GCC:	Yes	Yes	Yes
EBU L2:

Name:	Jumpball	Meckwell	Mod Meckwell	Brooss
Dble	or good or + /	or or +	or or +	or + / or +
2	or + /	+ /	+ //	+ /
2	+	+ /	+ /
2
2	Weak
2NT	+	+	+	+
3
3
ACBL GCC:	Yes	Yes	Yes	Yes
EBU L2:

Name:	Maestro	Stevenson type 1	Stevenson type 2	Stevenson type 3
Dble	or or 4 + 4 or 17+ HCP	+ or + / or +	+ or or +	+ or any 3-suiter
NOTE	These doubles were designed to work with Astro or Asptro. However, they may be used with other defences.
2	+ /	+ //longer	+ //longer	+ //longer
2	+ //	+ //longer	+ //longer	+ //longer
2
2
2NT	+	+	+	+
3
3
ACBL GCC:	Yes	Yes	Yes	Yes
EBU L2:

Name:	CANT	MONK (Major Oriented Notrump Killer)
Dble	14+, or or 14+, 4/4 / + other or 18+ HCP	or or 5332 with 5/ or 17+ HCP
2	+ /	+
2	or + //	5/ + 4/
2
2
2NT	Distributional + or strong 2-suiter
3
3
ACBL GCC:	Yes
EBU L2:

This article continues here

Editor's note:

• If you want to comment on this article, why not write direct to me, David Stevenson? I shall be pleased to hear from you!
• Chris Ryall discusses 1NT philosophies

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