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Authored by Mr. Adam Meyerson and Mr. Noble Shore. Mr. Adam Meyerson is depicted on the left and Mr. Noble Shore is depicted on the right. The website of Mr. Adam Meyerson and website (Home Page), website (Bidding System), and website (Bridge Teaching) of Mr. Noble Shore.
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Quoted excerpt from the authors:
The Recursive Diamond is a precision-like system, featuring light limited openings, weak notrumps, and an artificial forcing bid (1
). In contrast to precision and many other systems, the focus is on accurate game and partscore bidding rather than finding slams. We tend to enter the auction aggressively on distributional hands and our methods emphasize exploring for the best fit rather than setting up an early game force.
Our defensive bidding methods similarly emphasize finding our best fit, showing many types of two-suited hands as quickly as possible. Posted November 12, 2003.
Source as presented by the authors Mr. Adam Meyerson and Mr. Noble Shore. This documention is only preserved and archived also on this site in .pdf file format for future reference.
Although the designation of the documentation is Mellon Diamond, the documentation describes The Recursive Diamond bidding system. On the web page of Mr. Qixiang Sun this discrepancy is explained in a few words, and is presented without change:
The Mellon flavor of Recursive Diamond as refined by Adam Meyerson when he was at CMU. Charlie Garrod, Greg Humphreys, and Noble Shore also contributed to the modified version. This variant contains many improvements and discussions.
The website of Mr. Greg Humphreys, who is depicted below in this picture.
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See also: The Recursive Diamond - also The Recursive Diamond.
The opening structure of Recursive Diamond is as follows and identical to the layout in the documentation of the authors:
2 NT: At least 5-5 in the Minors. Weak, typically 7-10 hcp). 2 :
Weak Two 2 :
Weak Two 2 :
Intermediate, Rule of 20 opener, 6+cards in bid suit. 2 Intermediate, Rule of 20 opener, 6+cards in bid suit. 1 NT: 10-12 if 1st/2nd NV, else 12-14, can include 5-card Major. 1 5-card Major, Rule of 18 opener, not 5-3-3-2 shape. 1 :
5-card Major, Rule of 18 opener, not 5-3-3-2 shape. 1 Any 16+ hcp; 17+ if balanced and not 1st/2nd seat NV. 1 11-16 hcp, balanced or three suiter or Minors. 3 Bids of 3 an above are standard preempts.
Bids of 3 and above are standard preempts. The authors frequently prefer three level or higher preemptive bids of a Minor suit on reasonable 6-card plus suits, but other three level or higher preemptive bids are almost always with a 7-card suit.
If you wish to include this feature, or any other feature, of the game of bridge in your partnership agreement, then please make certain that the concept is understood by both partners. Be aware whether or not the feature is alertable or not and whether an announcement should or must be made. Check with the governing body and/or the bridge district and/or the bridge unit prior to the game to establish the guidelines applied. Please include the particular feature on your convention card in order that your opponents are also aware of this feature during the bidding process, since this information must be made known to them according to the Laws of Duplicate Contract Bridge. We do not always include the procedure regarding Alerts and/or Announcements, since these regulations are changed and revised during time by the governing body. It is our intention only to present the information as concisely and as accurately as possible.
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