Variation of Multi 2 Diamonds by Mr. Barry Rigal and Dr. Chris Ryall

Another method of responding has been suggested by Mr. Barry Rigal and Mr. Chris Ryall of England. This method can be viewed on the website of Dr. Chris Ryall. It is also the recommendation of Mr. Barry Rigal and Dr. Chris Ryall that the individual partnership must discuss what to do over opponents doubles and overcalls. The premise of this method is that the opener have one of the following holdings:

Poor Weak Twos in the Major suits

Sound Weak Twos in the Major suits, 8-9 high card points

Sound Weak Twos with a side suit splinter

Sound Weak Twos, balanced with a fluently running suit

A strong (e.g. 22-24) balanced hand with 22-24 high card points

A pure Acol Two in a Minor suit

The problem, as noticed by Mr. Barry Rigal and Dr. Chris Ryall, was that there appears to be insufficient bidding space on the levels available after a Multi 2 Diamonds opening to reach the optimal contract, especially if that contract should be 3 No Trump. Using this method, which specifically states that a Multi 2 Diamonds opening should be:

2 :	Shows 5-9 high card points by favorable vulnerability.
2 :	Shows 7-11 high card points by unfavorable vulnerability.

The concept behind the method, in the case that a contract of 3 No Trump is the optional contract, is to ignore the Major suits and to employ a Two-Way 3 Diamonds response to 2 No Trump. Other response include:

Opener		Responder		Meaning
2		2		To play or may pass/raise 2.
		2		To play or interest in game in Hearts using standard Paradox Principle *.
		2 NT		General Inquiry ** with 15+ or 9+ with both Major suits.
		3		Natural, strong and forcing.
		3		Natural, strong and forcing.
		3		Paradox-based Preemptive Raises.
		3		Paradox-based Preemptive Raises.
		3 NT		4-card Preemptive Raise in either Major suit, 0 to a bad 9 high card points.
		4		The same as 3 No Trump but with 5 plus Hearts.
		4		The same as 3 No Trump but with 5 plus Spades.
		4		Natural and to play.
		4		Natural and to play.

* A Paradox bid is a call of the suit you do not hold when the length in one of two suits has been shown or implied by partner's bid, generally when the partnership expects to establish the final contract in one of these suits.

Opener		Responder		Meaning
2		2
		J5 A853 K4 AQ732		Usually the opener will pass. However, game is possible, if the opener has Hearts.

Opener		Responder		Meaning
2		3
		J54 A853 9 Q10732		It is apparent that the opponents have game. But a Paradoxical Preempt of 3 makes and also is totally obstructive for the opponents to reach their contract successfully. Play in 3, or in 4.

South		North		Meaning
2		2 NT		General enquiry, usually with 15+ HCPs or a good 9+ HCPs and both Major suits.
3				This shows a No Trump balanced holding with 22-24 HCPs.
		3		Stayman
3				Either a poor 2 opening or good 2 opening. The Pivot Bid.
		3		Alternative Relay Bid. This response to 3 may be passed.
		3		Alternative Relay Bid. This response to 3 if forcing.
3				Good Weak Two in Hearts.
		3		Asking for the splinter after a 3 rebid by the opener.
3				Poor Weak Two in Spades.
		3 NT		To play.
		4 any		Cuebid.
3 NT				Shows 6-3-3-2 distribution and enough entries to run the Major suit.
4				Natural and strong.
4				Natural and strong
4				A rare hand unsuited for 3 level preempt.
4				A rare hand unsuited for 3 level preempt.

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