Responses to 1NT when it has been Doubled

Page 4

by David Stevenson

This article is continued from here

• Page 1: Redouble does not force 2: pass is not forcing.
• Page 2: Redouble does not force 2: pass is forcing.
• Page 3: Redouble forces 2: pass is not forcing.
• Page 4: Redouble forces 2: pass is forcing.

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 one or two diagrams per page.

Name:	Helvic Hayashi	Modified Helvic	Swine	Twisted Swine
Pass	Requires redbl	Requires redbl	Requires redbl	Requires redbl
Redbl	Forces 2	Forces 2	Forces 2	Forces 2
2	+	+	+ /	+ /
2	+	+	+	+
2	+	+	, fair hand	+
2	+		, fair hand	Good
2NT			Strong, unbalanced	Strong, unbalanced
	After pass and opener's redouble:
Pass	To play	To play	To play	To play
2	+	+ /	+	+
2	+	+	+	+
2			+
	After redouble and opener's 2
Pass
2
2
2				Poor

Name:	Auto XX with forcing pass [1]	Auto XX with forcing pass [2]	Auto XX with forcing pass [3]	Auto XX with forcing pass [4]
Pass	Requires redbl	Requires redbl	Requires redbl	Requires redbl
Redbl	Forces 2	Forces 2	Forces 2	Transfer to
2	Transfer to	Transfer to	Transfer to	Transfer to
2	Transfer to	Transfer to	Transfer to	Transfer to
2	Transfer to	Transfer to	Transfer to	Transfer to
	After pass and opener's redouble:
Pass	To play	To play	To play	To play
2	Bid suits upwards	4 or 4333 with 4/	4 + 4// or 4333 or 5 + 4	4 or 4333 with 4/
2		4 + 3-	4 + 4/ or 4 + 4 + 3	4 + 3-
2		+	5 + 4	+
	After redouble and opener's 2
Pass
2	Stayman	Stayman	Stayman	Second suit after transfer to
2	Second suit after transfer to	Second suit after transfer to	Second suit after transfer to
2

Name:	Moscow	Suction		Allerton
Pass	Requires redbl	Requires redbl		Requires redbl
Redbl	Forces 2	Forces 2		Forces 2
2	Stayman	or 4 + 5		+ /
2	Transfer to	or +		To play
2	Transfer to	or +		To play
2	As without X			To play
2NT				Game forcing 2-suiter
3suit				Pre-emptive
	After pass and opener's redouble:
Pass	To play	To play		To play
2	Bid suits upwards: Any 2-suiter except +	+		+
2		+		+
2		4 + 4		4/5 + 4
	After redouble and opener's 2
Pass				or short in 3-suiter
2		+		+
2	+	5 + 4		5 + 4

Name:	Aardvark + Halmic forced XX	BidPig ***	Dig-out Spelvic	Stamina
Pass	Requires redbl	Requires redbl	Requires redbl	Requires redbl, or 2/// = 5 cards, or 3/ = 6 cards
Redbl	Forces 2	Forces 2	Forces 2 ****	Requires 2, or 2 = 6 + 2, or 2/ = 5/ + 2
2	+ //	+ //	+	Requires 2, or 2/ = 5 / + 2
2	+ /	+ /	+	Transfer to , may be 5 + 4
2	+	+	+	Transfer to
2		, very weak	To play	Requires 2NT, or 3/ = better minor + maximum
2NT			+	Transfer to
3suit			Natural	Transfer
NOTE		*** BidPig stands for 'Bidding indicates DONT, Pass indicates Geneva'	**** Optional rebids: ParadoX: Rebid 2 with 4+; rebid 2 with 4+ 4
	After pass and opener's redouble:
Pass	To play	To play	To play	To play
2	4333	, fair hand	+ /	+ //
2		, fair hand	+	4333 with 4/
2		+ , competitive		5 + 4
2		, competitive		5 + 4
2NT		+ , competitive
3		, competitive
3		, competitive
	After redouble and opener's 2
Pass				5 or 4333 with 4
2				+ /
2				5 + 4
2				5 + 4
	After 2 and opener's 2
Pass				5 or 4333 with 4
2				4 + 4
2				5 + 4

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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