Defence to 1NT

Page 4

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:	ANTI	Pinpoint Astro	Suction Redwood	Suction TWERB
Dble	Penalties	Penalties	Penalties	Penalties
2	or +	+	or +	or +
2	or + /	+	or +	or +
2	+ /	+	or +	or +
2		or + /	or +	+ or +
2NT	+	+	+ or +	or +
3
3
3
ACBL GCC:		Yes
EBU L2:		Yes

Name:	HELLO Krekoletti	CDH Buchanan SPLASH	Transfer	Astrolite
Dble	Penalties	Penalties	Penalties	Penalties
2	or / + /	+ //		or + /
2		+ /		+ /
2	+ [weak]	+		+
2
2NT
3	+
3	+
ACBL GCC:	Yes	Yes	Yes	Yes
EBU L2:		Yes	Yes	Yes

Name:	Geneva	French [Weak NT] Marvin [Weak NT]	Exclusion Bids Super Convention	Inverse Psycho Suction [Weak NT]
Dble	Penalties	Penalties	Penalties	Penalties
2		or + or + +	or //	or +
2	+ / or , not weak, or + , not weak	or + or + +	or //	or +
2	+ , weak	or + or + +	or //	or +
2	, weak	or + or + +	or //	or +
2NT	+	or		+ or +
3		+
3		+
ACBL GCC:	Yes	Yes
EBU L2:	Yes

Name:	Mohan type 1	Mohan type 2	Middlesex
Dble	Penalties	Penalties	Penalties
2	+	+	or 4 + 5//
2			or 4 + 5//
2			or 4 + 5//
2	+ /	+	or 4 + 5//
2NT	+ /
3
3
ACBL GCC:	Yes	Yes	Yes	Yes
EBU L2:	Yes	Yes	Yes

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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