System is in flux. To get a copy of 1C continuations or the complete responses email [email protected]
T-Precision stands for Transfer Precision. My goal in this version is to have T-Precision have transfers for most responses showing five+ card suits and have ways to show all 5-5 or better positive hands. Also, I want to make changes I have come across playing Swedish Precision and other forms of Precision. The changes to the new ACBL charts do not affect Precision substantially. Most everything Precision bid is legal on the Open and Open+ charts, the main exception is Multi 2D which is still restricted so not considered. On the Basic+ there are restrictions but for the most part Precision is exempted from the restrictions and has an unfair advantage over more standard methods. I believe our 1D bid does not qualify under Basic+. The problem is 1D needs to be 2+, so you need to adjust when opener has 0-1D. Likely adjustment are passing, opening a 4-card major, bidding off-shape 1NT or 2C on 5 clubs.
The biggest system change is the 1D and 2D bid. The 2D bid is now Mexican (19-20 hcp balanced) to improve handling of interference for 1C and to make NT bidding more accurate. So, 1D needs to include three-suiters with 0+D opened 2D in most versions of Precision. Often a 1D opener is looking for a fit opposite a four-card major. Opening 2C still promises six+ clubs. So 1D will include hands with five clubs and a four-card major but will treat these hands as balanced when possible.
The standard limited openings 1D, 1H, 1S, 2C can now be opened on some hands which meet the rule of 19. Third hand limited hands can be opened on near average strength; 8 hcp or meets the rule of 17.
For 1C opening uses transfers, suits respond either 1 bid below suit or 1S to show hearts. Balanced positives bid 2D or 2NT and both contain dual ranges. There are bids (2H/2S) to show all major-minor two-suiter 5-5 or better. Other hands (both major or both minors) with 5-5 or better suits are shown by breaking the Beta ask. Minimum unusual positives use 3C and 3D to show 4441 hands while 3H, 3S 4C, 4D show stronger 4441 with singleton above bid suit with 4C showing diamonds and 4D showing heart singleton. 3NT still shows an unknown solid suit.
Muiderberg bids showing 5M 4+m's have replaced the standard weak 2M. 2NT is weak with both Minors. We have essentially interchanging the 2D and 2NT replacing a strong balanced hand with a preempt.
Recently, Joe Grue and Brad Moss used Precision non-vulnerable and 2/1 GF vulnerable to win a world championship. While in theory this is a good method, in practice the memory load for systems is too high. I propose being conservative opening 1st and 2nd seat vulnerable and otherwise open good hands that are light in other situations. Other situations also being more conservative vulnerable which is just being prudent.
2. Precision Opening Bids
Here is a summary of opening bids:
1D: 11-15 hcp hands which cannot make another bid. Specifically, no five-card major and zero+ diamonds (4405). Hand types are balanced hands with 11-13 hcp and two+ diamonds, 3-suiters with up to a five-card minor, diamond 1-suiter or a 2-suiter with five+ diamonds. Suitable hands can be upgraded if meet rule of 19 or in third seat rule of 17. NF.
1H or 1S: 11-15 hcp, with five or more cards in the suit. It is a priority to open a five-card major, so opener may have a longer minor. Suitable hands may be upgraded if they meet the rule of 19 or in third seat rule of 17. NF.
1NT: 14-16 hcp, balanced. Usually no five-card major, singleton honours rare but possible. If 14-15 denies two biddable 4-card majors. With concentration of values in two suits 1D is possible despite otherwise qualifying for 1NT. NF.
2C: 11-15 hcp with six+ clubs and may have a four-card major or diamond suit. Suitable hands may be upgraded if they meet the rule of 19 or in third seat rule of 17. NF.
2D: Mexican 19-20 hcp and balanced with no five-card major or six-card minor but may include 54 in minors but usually not 5m4M22 shapes. NF.
3 of a minor suit: preemptive, 6-10 hcp, sound six+ card suit. Either a semi-solid suit or a good suit with a side Ace or King in 1st and 2nd seat. Responder with an honour in pre-empt suit should have good prospects for game.
3 of a major suit: preemptive, 5-10 hcp, six+ card suit. Hands could include those what would be at the top end for a standard weak 2 bid.
3NT: Solid seven+ card solid minor suit with no side Ace or King.
4 of any suit: preemptive, 5-10 hcp, good seven+ card suit.
4NT: Balanced hand with 2 losers which are Aces or Kings.
Responses are adjusted after 3rd/4th seat opening
16+ hcp or 17+ balanced (but not 19-20 hcp balanced). Good 16 hcp hands can be upgraded if balanced. Suitable hands may be upgraded if 14-15 hcp and meets the rule of 24. F1
1NT: 8+ hcp five+ clubs but not 5C332 and denies another five+ card suit. GF
2C: 8+ hcp five+ diamonds but not 5D332 and denies another five+ suit except for clubs GF.
2D: 8-10 or 14-15 hcp balanced including 5m332 GF.
2S: 8+ hcp five+ spades and a five+ minor suit GF.
3D: 8-11 hcp or 0-3 controls 1-4-4-4 or 4-4-4-1 with a red singleton
3H: 12+ hcp and 4+ controls 1-4-4-4 with a spade singleton
3S: 12+ hcp and 4+ controls 4-4-4-1 with a club singleton
3NT: solid (AKQ) seven or eight card unnamed minor suit with no side Ace/King NF.
4C: 12+ hcp and 4+ controls 4-4-1-4 with a diamond singleton
4D: 12+ hcp and 4+ controls 4-1-4-4 with a heart singleton
4H: eight-card broken heart suit with no side Ace/King NF.
4S: eight-card broken spade suit with no side Ace/King NF.