mikestar13, on 2014-July-31, 02:28, said:
Interesting concept, I rather like it. Do you get a lot of criticism for passing flat 12's? My Real Diamond Precision partnership has moved to requiring 6 for the 2♣ opener, and using a wide range 12-15 1NT which may include 5-4-2-2 shapes, and passing flat 11's. Now 1♦ almost always has 4, it cam only be 3 with 4=1=3=5 or 1=4=3=5. I would be happier with a 13-15 1NT with pass or bash style responses, but this would require passing flat 12's.
I agree with an opening 2♣ requiring 6 cards, or a very good 5 and NO 4-card major. I have played this way for 10 years now.
In addition we have made the 1♦ opening artificial also, 0+♦ AND at least one 4-card major. Now we use a design similar to whereeagles comment:
1♦ - 2,3,4,5♣ = No 4-card major and 9+ cards in the minors (0-9, 10-12, 13-15, 16+).
2♦ opening is now like 2♣ opening, 11-15 hcp and 6-cards.
Also 12-15 for 1NT is too large a range. We use 11-14 and upgrade or downgrade 15s.