NBB - Dutch Bridge Federation

Final Dutch NC Imps Teams

Onstein Castle BC Vorden - Modalfa BC Amsterdam

Amsterdam, RAI Exhibition and Convention Center

Session 4, Boards 09-16

December 10, 2000

Recommended bidding sequence:

1 = We open any other 5431-hand with 11 hcp, so why passing this one?
2 = Strong type of takeout double, 16⁺ hand.
3 = Walsh approach is canceled after interference.
4 = Renewing the takeout double, showing 18⁺ hand.
5 = North must bid a suit.
6 = Inviting to bid game, unless North has a complete yarborough.
7 = Unwise to double partscores for penalties, unless one has bright prospects of setting the contract by 2 or more tricks.

More discussion to follow.

Recommended bidding sequence:

1 = East must alert if EW have agreed on Walsh approach.
2 = Hand with 8-9 hcp, or the distributional equivalent.
3 = East has nothing to spare.

More discussion to follow.

Recommended bidding sequence:

1 = Checkback Stayman or New Minor Forcing, hoping to find South with 3-card ©-support.
2 = 3-card ©-suit.
3 = Agrees with © as trump suit, showing §-control, not necessarily singleton or void.
4 = Last Train (to Clarksville [Indiana?]), showing ª-, but denying §-control. The underlying idea is as follows:
      a. South could not continue the slamtry without a ª-control, the control North just denied;
      b. If South has ª- and ¨-control, he could just as well start asking with RKCB.
5 = If South can't bring a ¨-control, slam is off, as far as Noth is concerned.

More discussion to follow.

Recommended bidding sequence:

1 = 1NT shows 11-14 hcp when only LHO has bid, and 18-19 hcp, when both opponents have bid.

More discussion to follow.

Recommended bidding sequence:

1 = Garozzo splinters usually require 4-card support, but you can't always have what you want. One advantage of 2NT is, that it shuts West out of the bidding.
2 = 3© could work out well at matchpoints, but is far too risky at imps, when NS, at least, are heading for game.
3 = Asking for the short suit of South.
4 = Limit raise type of hand: singleton or void in hearts, but only 8-11 hcp.
5 = South's singleton suits North very well for game, but slam is looks out of reach.

North is unaware of the §-fit. Give South ¨K instead of ¨QJ, and 6§ becomes more than a Las Vegas gamble.

More discussion to follow.

Recommended bidding sequence:

1 = At imps, it is rarely wise to interfere with a 2NT opening.
2 = Puppet Stayman, asking for 4- or 5 card major.
3 = One or two 4-card majors.
4 = Sort of transfer: 4-card ª-suit, no 4-card ©-suit.
5 = No 4-card ª-suit.

South leads ¨J, third best. East has no valid clue to play him for ©Q8, unless South interferes or hesitates after 2NT.

Recommended bidding sequence:

1 = Only the stiff king keeps him from rebidding 3§.
2 = Fourth suit forcing.
3 = 6/4-shaped hand with 15-19 hcp.
4 = Showing 5/5 in the majors, for otherwise, there is no point in repeating 4th suit.
5 = ª-preference, more than likely based on a doubleton.

When one is missing one of the five aces and the queen of trumps, slam is usually against the odds. The 6¨ of Jansma and Verhees is a typical case of support for this theorem. Jansma should have bid 4¨ instead of 5¨, giving Verhees the room for investigating. Verhees should have gone for the 'sure' thing, and have passed 5¨.

Recommended bidding sequence:

1 = Unlike 2 over 1 of a major, 2§ over 1¨ just shows 10⁺ hcp, forcing for one round.
2 = If 3§ would force game, this slam would probably be missed.
3 = ©-control.
4 = ¨-control, denying ª-control.
5 = RKCB, 1403-variation, if applicable.
6 = 0 or 3 out of 5 aces.
7 = NS have crossed the point of no return, but before South started asking for aces, he already knew that his side had enough trumps to make up for the case North did not have §Q.

Slam must be played from South, so 6¨ is out of the question. The queen of diamonds is an important card, but we have a 5-4 fit in ¨, which subtiantially increases the chance it will come down, in case North does not have it.

Go to session 04, boards 17-20

Copyright © 1999 by Michel Franssen