[masse24]

Scoring: IMP

North Dealer.
Bidding proceeded:
2♣ (P) 2♦ (P)
2NT (P) ??

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Suggestions on how to navigate at least somewhat scientifically to the ♦ slam?

[junyi_zhu]

masse24, on Sep 16 2010, 10:56 PM, said:

Scoring: IMP

North Dealer.
Bidding proceeded:
2♣ (P) 2♦ (P)
2NT (P) ??

---

Suggestions on how to navigate at least somewhat scientifically to the ♦ slam?

It is difficult. If you don't have suit quality requirement for 3D over 2C, it's OK to bid 3D. Now you can bid 4C as a transfer to D, then cuebid S. Now your pass the ball to partner, if he likes his hand, he'd bid 6D. Don't expect a lot of science after 2NT.

[ONEferBRID]

EDIT: After posting and THEN thinking it over, there is too much risk to put Opener in slam when missing 2 key cards ( overall ) .
Not only could they be the dAK, you could also be missing the 2 red Aces.
Responder has to sign-off in either 4NT or 5D.

^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^

My method would have to assume Opener has at least one top Diam honor:

May ACBL Bulletin treatment with "right-siding" modification by Fred Hamilton and my modification of TURBO-type "showing" of key cards by opener:

After:
2NT( 22-24) - 3S! ( relay to 3NT! since direct 3NT = 4/4 in Majors )
3NT! - 4C! ( slammish, long Diam )
4D! ( 1st step = 0 or 3 key card showing ) - 6D ( off 2 key cards but hopefully partner has dA or dK )

- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -
If Responder had a stiff Sp, then Responder would sign-off in either 4NT or 5D;
probably 5D.

[hanp]

What are your methods?

Lacking any methods I would bid 6C with the south hand. Opposite 22-24 I think we often want to be in slam.

[ONEferBRID]

hanp, on Sep 17 2010, 04:01 AM, said:

What are your methods?

Lacking any methods I would bid 6C with the south hand. Opposite 22-24 I think we often want to be in slam.

I think that is now known as the "Piltch ( Slam Bid )" when you hold a 6/4 .

[hanp]

Seems normal, give partner ♥Axx and ♣AQJx for example.

[Fluffy]

you've got to start with 3♦ on this hand, the bidding is too messy otherwise.

On the other hand after 2♣-2♦-2NT, partner has ♠KQx and you still make diamond slam, so just bidding it is probably a good idea.

[hanp]

I wouldn't bid 3D.

[P_Marlowe]

Hi,

most peoble use 3S over 2NT as a bid to help in the investigation of minor
suit slams.

This would be your best bet.

We use it, to show a for single suited minor hand, other play it
as Minor Suit Stayman.

With kind regards
Marlowe

[ONEferBRID]

Fluffy, on Sep 17 2010, 05:10 AM, said:

you've got to start with 3♦ on this hand, the bidding is too messy otherwise.

On the other hand after 2♣-2♦-2NT, partner has ♠KQx and you still make diamond slam, so just bidding it is probably a good idea.

1) 3D! is a transfer to Hts

2) When 2 key cards are missing, the chances are only about 4-in-9 that you have a good chance of making 6D with Responder having an outside void.

--Missing the ♦A K, your chances are slim to none

--Missing the ♦A and either "rounded suit" A...essentially no chance

--Missing the ♦K and either rounded suit A... fair-to-poor ( you must drop or successfully hook for the ♦K and only lose one trick in that missing Ace suit ).

--Missing a trump honor and ♠A... good chances

-- Missing ♠A and a rounded suit Ace... good chances ( this hand is one of those cases ).