[Tola18]

We played WJ2005.

N 1C W pass S 1H E pass, N 1NT (12-14NT) W D (unclear yet if TO or business) S 2C.

In undisturbed auction is this 2C the Magister/Pro, ie a sort of NMF. But is it still Magister here after the D??
I think it should be natural nonforcing, as S with a strong hand can always RD.

What do you say?

A) you conneiseurs of WJ2005

B ) you Standard American NMF-players

[Gerben42]

As author of the WJ2005 FD file I must be category B.

2♣ here is natural and to play.

[the hog]

Natural here, but don't play Magister. Play Transfer checkback Idzdebski style.

[Tola18]

OK guys. Thanks a lot for your response!

[TimG]

The_Hog, on Feb 16 2007, 11:17 PM, said:

Natural here, but don't play Magister. Play Transfer checkback Idzdebski style.

I did a quick search (here and google), but came up empty. Can you describe the Idzdebski style transfer checkback?

[Tola18]

I will check some me too, but the name is apparently miss-spelled - it must be Izdebski. Wladyslaw Izdebski.

a wellknown polish theoretician and author (probably also a practician! )


It seems to be some sort of XYZ-convention. I myself dont care to sort out the variations. None of my steady partners do play this.

http://www.ktb.konin.lm.pl/wj13.htm - Izdebski is reasoning in Polish.


http://www.geocities...0/sys/WJXXI.txt Izdebski´s variation of WJ in English. Our double checkback / XYZ should be here somewhere.

[the hog]

We play transfer checkback.

2♣ is a puppet to 2♦, which may be made with
a weak hand wishing to sign off in ♦
an invitational hand with a 5 card Major
an invitational hand with a 4 card Major and a 5+m
a GF balanced hand

Other bids apart from 2♣ are transfers.


These occur in the following sequences:

1♣ 1M
1N

1♣ 1♥
1♠

1♦ 1M
1NT

1♦ 1♥
1♠


Note that when opener rebids 1N his hand is limited to 12-15 points. Responder is in charge of the auction. Opener MUST rebid 2♦ after 2♣.

When opener rebids 1♠, (eg 1♣ 1♥ 1♠), he will usually have 12-15 points, however he MAY have more eg 16-17 with 5+C and 4♠, or a balanced 17-23 possibly including a 5 card S suit. In these cases he cannot rebid 2♦ after the 2♣ puppet as there is too great a danger that responder will pass. He must make some other bid – see below.


Sequences

1♣ 1♠
1NT 2♣
2♦ P Weak with 4♠ and long D
2♥ Invit with 5♠/4♥
2♠ Invit with 5♠
2N Slam ambitions, flat 4333 or 4432 with any other 4 card suit
3♣ GF natural fragment 5143 shape exactly

1♣ 1♠
1NT 2♣
2♦ 2N
3♣ Relay asking for other 4 card suit
Now 3♦ = ♦, 3♥ = ♥, 3♠ = ♣
Now
Raises of the minor to the 4 level are minorwood
3N is a sign off, 4N is quantitative
4♣ is RKCB in ♥ NB Opener CANNOT HAVE 4♠


1♣ 1♠
1NT 2♦ Transfer to ♥. Weak or GF
2♥ Transfer to ♠, weak or I suited GF
2♠ Invit to 3N OR sign off in ♣, (as over 1N opening). Or GF with
5M & 5♣ – see below
2N GF transfer to ♣
3♣/♦/♥ Natural invitational, 5/5

3
1♣ 1♠
1NT 2♦ Transfer to H. Weak or GF
2♥ Opener accepts t/f, therefore must have 4♥
Now 3♥ = GF, inviting cues, others are natural fragments
2♠ Opener has <4 ♥, but at least 2♠
Now 2N = GF NT oriented hand
3♣/♦ are GF natural fragments
3♥ = 5/5 GF
3♠ = 6 very good ♠ GF


1♣ 1♠
1NT 2♠ Inv in NT, or weak with ♣, or GF with 5M & 5♣
2N Min
3♣ Max

1♣ 1♠
1NT 2♠
2N 3♣ Weak with ♣
3♦/♥ GF with 5M and singleton in this suit
3♠ 6M and 5♣





General Rules In All Sequences:

• 2♠ is equivalent to 2♠ over 1NT opening – invitational to 3N or sign off in ♣
• To transfer and then bid again is a game force, with the exception of invitational hands which go via 2♣
• 2♦/♥/NT are transfers and could be weak OR GF. GF shows the fragment on the next round
• level new suit is natural invitational 5/5
• 2♣ is either a puppet to 2♦, (weak or GF, both natural), or any unbalanced invitational hand

This is effectively what I published in Australian Bridge. It is Izdebski btw.

[TimG]

Thanks, this is something like what I was envisioning, much easier that it is already laid out.

Tim

[brianshark]

I play wj05 with a few people. And I have no idea what the meaning of 2♣ would be after the double in any of them. I guess this sequence hasn't come up. Nobody round these parts pass 1♣ but then dbl 1NT.

[TimG]

The_Hog, on Dec 28 2008, 09:29 PM, said:

Sequences

1♣  1♠
1NT  2♣
2♦  P  Weak with 4♠ and long D
  2♥  Invit with 5♠/4♥
  2♠  Invit with 5♠
  2N  Slam ambitions, flat 4333 or 4432 with any other 4 card suit
  3♣  GF natural fragment 5143 shape exactly

How do you show GF 4153? Or, do you respond 2♦ instead of 1♠ with this hand?

What about 4x5x invitational? 5x5x GF?

Do you have agreements about the follow-ups to 1♣-1♠; 1N-2♥; 2♠?