After trying misho's transfer preempts, we have decided we would like to keep 2NT as balanced big hand. We have modified the bidding so that 3C/3D/3H are the transfer preempts. Now 3S shows any solid suit, and 3NT shows a preempt to four of a minor (not solid suit).
When we open 3C, it is either weak with diamonds, or any strong two suiter short in diamonds
A 3D opening is either weak with hearts, or any strong two suiter with diamonds and a black suit.
A 3H opening bid is either spades or a strong heart/diamond two suiter.
We use opener rebids at the three and four level to separate as to how strong the bid is (how many losers). For instance,
3C-3D (forced)-
- 3H = major two suiter, 4 losers
- 3S = spades and clubs, 4 losers
- 3NT = hearts and clubs (non-touching), 4 losers
- 4C = clubs and hearts, 3 losers
- 4H = hearts and spades 3 losers
- 4S = spades and clubs, 2 losers
- etc
Here is a difficult hand that only one pair found the laydown 6
♦ contract on, after opening a strong two clubs.
IMP-1 tankdriver Dlr: East
Board 15709 S 9872 Vul: E-W
H 763
SIBELCANAN D QT76 baron_35
S AQJ6 C J4 S T543
H JT842 H KQ9
D 52 gezgin2000 D J3
C 72 S K C 9865
H A5
D AK984
C AKQT3
The transfer "preempt auction would be...
3
♦ 3
♥
4
♣ 5
♦
6
♦ Pass
Four clubs shows
♦ and
♣ and three losers, five diamonds shows at least one sure cover card and
♦ fit, 4NT over 4
♣ would have shown
♣ shortness and be slam try if short club is worht two cover cards, 4
♠ over 4
♣ would have asked for opener to show best suit, and 4
♥ over 4NT would have shown
♦ shortness and slam try if short diamond is two cover cards. So 5
♦ shows marked preference for
♦ and one absolute sure cover card. 6
♦ with the "solid" clubs facing two or three clubs and longer diamonds seems excellent shot. Counting on 5
♣ and 5
♦ a heart and a heart ruff, or maybe 5
♦, 4
♣ a
♥ and a
♣ and
♥ ruff. OR if necessary, a club hook of jack (or fall of jack).
As you can see, we have harneshed some of the off suit and 4NT bids to explore quality of cover cards. We can still ask for keycards, consider this auction from bidding session....
3
♣ - 3
♦
4
♠ - 4NT
5
♦ - 5
♠
5NT- 7
♣
Pass
3C = preempt in diamonds or strong two suiter short in diamonds
3D = signoff opposite diamond preempt
3S = black two suiter, three losers
4NT = slam if my short spade is worth two cover cards
5D = RKCB, grand slam try
5S = one key card
5NT = trump queen?
7C = more than enough clubs to make up for missing queen
These two hands, slam is reached (and grand slam in one case) despite the shortage not working out exactly as planned. In the first case, you take advantage of the shortage question not being asked. In the second, WEST counts tricks again based upon the quality of the offered suit. Yes he could run into a partner with five hearts and four clubs, so pitches do no good. This is still a work in progress... we are looking for ideas on how to improve the auctions.
Ben
West East
2N - 3C
3S - 5S <<--- ♥Q and ♠K working, partner has four losers at most, invite
6S - Pass
6♠ by WEST is cold, by east is donw on club lead. 6♥ will not make. Most who made it to 6♠ played from wrong side, and most who made it to slam played in hearts going down.