BBO Discussion Forums: Bid these (matchpoint pairs) - BBO Discussion Forums

Jump to content

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

Bid these (matchpoint pairs)

#1 User is online   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,168
  • Joined: 2009-July-13
  • Location:England

Posted 2023-November-20, 02:58

Silent opps, dealer W



Not 100% clear where you want to be or how you get there
0

#2 User is offline   AL78 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,023
  • Joined: 2019-October-13
  • Gender:Male
  • Location:SE England
  • Interests:Bridge, hiking, cycling, gardening, weight training

Posted 2023-November-20, 05:00

Looking at both hands 6 looks a fairly decent contract at MPs but I don't see an easy way to get there with the systems I am familiar with.



I'm stuck now. I think once the double fit is established North is good enough to initiate slam investigation but I don't know how either player can find out enough to deduce the slam requires either the spade king or the diamond queen to be picked up plus the avoidance of a harsh layout so probably at least 60%.
0

#3 User is online   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,168
  • Joined: 2009-July-13
  • Location:England

Posted 2023-November-20, 05:06

View PostAL78, on 2023-November-20, 05:00, said:

Looking at both hands 6 looks a fairly decent contract at MPs but I don't see an easy way to get there with the systems I am familiar with.



I'm stuck now. I think once the double fit is established North is good enough to initiate slam investigation but I don't know how either player can find out enough to deduce the slam requires either the spade king or the diamond queen to be picked up plus the avoidance of a harsh layout so probably at least 60%.


6 is better (can cope with Kxxx onside) but of course scores less but you're in a room where bidding and making any slam will score well.

Bonus question: there were 5 scores on the traveller, can you guess what they were ?
0

#4 User is offline   AL78 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,023
  • Joined: 2019-October-13
  • Gender:Male
  • Location:SE England
  • Interests:Bridge, hiking, cycling, gardening, weight training

Posted 2023-November-20, 06:44

View PostCyberyeti, on 2023-November-20, 05:06, said:

6 is better (can cope with Kxxx onside) but of course scores less but you're in a room where bidding and making any slam will score well.

Bonus question: there were 5 scores on the traveller, can you guess what they were ?


At IMPs I'd want to be in 6 but at MPs it is less obvious, the strategy being to bid to inferior contracts that score well if they are better than 50/50.

My guess at the five scores:

3NT+3 690
4S+2 680
6-1 -100
5+1 620
3+2 200
0

#5 User is offline   shyams 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,657
  • Joined: 2009-August-02
  • Gender:Male
  • Location:London, UK

Posted 2023-November-20, 07:05

My guess is that at least one table would have played in a diamond partscore --- maybe 3 +2 or +3
0

#6 User is offline   pescetom 

  • PipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 7,866
  • Joined: 2014-February-18
  • Gender:Male
  • Location:Italy

Posted 2023-November-20, 07:18

View Postshyams, on 2023-November-20, 07:05, said:

My guess is that at least one table would have played in a diamond partscore --- maybe 3 +2 or +3


Several of ours might do that.
0

#7 User is offline   pescetom 

  • PipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 7,866
  • Joined: 2014-February-18
  • Gender:Male
  • Location:Italy

Posted 2023-November-20, 07:40

View PostCyberyeti, on 2023-November-20, 02:58, said:

Not 100% clear where you want to be or how you get there

I think we end up in 6 at MP, although 6NT or even 6 might turn out better.
___ p
1 - 1
2NT - 3*
3 - 4
4 - 4
5** - 5
5 - 6
p

* GF
**also implies odd keycards
0

#8 User is offline   P_Marlowe 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 10,239
  • Joined: 2005-March-18
  • Gender:Male

Posted 2023-November-20, 08:21

Hi,

we play a 5 card major system, weak NT, with a wide ranging 1 NT rebid.

Pass (1) - 1D
1S - 1NT (2)
3D (3) - 4S / 6D (4)


(1) We dont play weak 2- suited openings, and this is not a 1 level opening for us
(2) 15-19
(3) 5/5, gf
(4) ...

You could argue, that given the Aces / Controls, due to right sidening you could and
should blast 6D, I am not doing it, but you can convince me, that it is right.
And if you blast slam, which will be a 28/30 slam, it does not matter which suit, as
long as it makes, and diamonds will be played from the correct side, the lead, wont
be a problem, it may even be helpful.

With kind regards
Marlowe
With kind regards
Uwe Gebhardt (P_Marlowe)
0

#9 User is offline   mycroft 

  • Secretary Bird
  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 7,417
  • Joined: 2003-July-12
  • Gender:Male
  • Location:Calgary, D18; Chapala, D16

Posted 2023-November-20, 09:12

Your "West deals, so N is in second seat" brought out my EHAA demon:

2-4 (Strong Jump Shift)
5-5
6 (? I have a Good weak 2 for slam, with two fits) - 6 (? matchpoint greed)

So, there are reasons nobody plays EHAA competitively any more; but it's amusing...
When I go to sea, don't fear for me, Fear For The Storm -- Birdie and the Swansong (tSCoSI)
0

#10 User is online   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,168
  • Joined: 2009-July-13
  • Location:England

Posted 2023-November-20, 09:47

View Postshyams, on 2023-November-20, 07:05, said:

My guess is that at least one table would have played in a diamond partscore --- maybe 3 +2 or +3


Correct, one did.
0

#11 User is online   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,168
  • Joined: 2009-July-13
  • Location:England

Posted 2023-November-20, 10:00

View PostP_Marlowe, on 2023-November-20, 08:21, said:

Hi,

we play a 5 card major system, weak NT, with a wide ranging 1 NT rebid.

Pass (1) - 1D
1S - 1NT (2)
3D (3) - 4S / 6D (4)


(1) We dont play weak 2- suited openings, and this is not a 1 level opening for us
(2) 15-19
(3) 5/5, gf
(4) ...




Interestingly we play 4M but otherwise similar NT rebid and open 1m with 4M4m32. Partner fell off the planet a couple of times.

We started:
P (I'd have opened 1 and we would have cruised to 6 after 1-2-2-2-3-)-1
1 (partner forgot to bid 2 fit by a passed hand)-1N (15-bad 19)
2 (asking, 3 would be NF v 15-16 for us)- 3 (17-bad 19 44 not denying 3)

now partner should systemically bid 3 but just bid 3N ending the auction.
0

#12 User is online   mw64ahw 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,185
  • Joined: 2021-February-13
  • Gender:Not Telling
  • Interests:Bidding & play optimisation via simulation.

Posted 2023-November-20, 12:06

View Postmycroft, on 2023-November-20, 09:12, said:

Your "West deals, so N is in second seat" brought out my EHAA demon:

2-4 (Strong Jump Shift)
5-5
6 (? I have a Good weak 2 for slam, with two fits) - 6 (? matchpoint greed)

So, there are reasons nobody plays EHAA competitively any more; but it's amusing...

I'm a bit surprised that so many North's are passing, but why bid the weaker suit here?

What happens after
2-2NT
3-any way to find out the minor suit length?
0

#13 User is offline   Gilithin 

  • PipPipPipPipPip
  • Group: Full Members
  • Posts: 975
  • Joined: 2014-November-13
  • Gender:Male

Posted 2023-November-20, 16:57

I guess the auction starts 2 (Muiderberg) - 2NT (relay) -- 3 (good hand with diamonds). What comes after that is down to methods - 6KCB could be a nice option if available.
0

#14 User is offline   nullve 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,293
  • Joined: 2014-April-08
  • Gender:Male
  • Location:Norway
  • Interests:partscores

Posted 2023-November-20, 17:35

View PostCyberyeti, on 2023-November-20, 02:58, said:

Silent opps, dealer W



Not 100% clear where you want to be or how you get there

nullve(N)-nullve(S):

1(1)-2(2)
2(3)-2(4)
3(5)-3(6)
3(7)-4(8)
4(9)-4N(10)
5(11)-6(12)
P

(1) "10-21, 5+ S, unBAL"
(2) "NAT (GF), not-too-unBAL (GF) or FIT (INV+)"
(3) "10-12", any OR "19-21", some hand types
(4) GF relay, slam interest even opposite "10-12"
(5) 9-11, 5S5m
(6) relay
(7) 5 D
(8) slam try in S
(9) 5S5D(21)
(10) parity key card ask
(11) odd # of key cards, trump Q, K
(12) contract
0

#15 User is offline   mycroft 

  • Secretary Bird
  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 7,417
  • Joined: 2003-July-12
  • Gender:Male
  • Location:Calgary, D18; Chapala, D16

Posted 2023-November-20, 18:44

View Postmw64ahw, on 2023-November-20, 12:06, said:

I'm a bit surprised that so many North's are passing, but why bid the weaker suit here?

  • When partner bids 3 [1], I can bid 3 and play there if it's right.
  • When the opponents come in, I can bid diamonds and partner can correct.

I'm playing EHAA - I'm allowed to bid either suit, whichever one I think is safest and best. I think Spades this time (although 2-2; 2 might be a safer run).

Quote

What happens after
2-2NT
3-any way to find out the minor suit length?

Well, I'm responding 3NT to 2NT [2]. With the A and the K and the likely diamond fit, he's probably making it.

If I'm not playing EHAA, but can open bad 5-card suits, why would I ever respond 3? Either I have a control (two, in fact), or I have a singleton, or I definitely do not have a good suit. I don't know what your 2NT is asking about; those are the common options in the ACBL. Not sure how you find diamonds unless 2 is Muiderberg or Polish (in which case, the reason they open 2 is that it shows this hand - 2 definitely wouldn't show diamonds).

Spoiler

When I go to sea, don't fear for me, Fear For The Storm -- Birdie and the Swansong (tSCoSI)
0

#16 User is offline   AL78 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,023
  • Joined: 2019-October-13
  • Gender:Male
  • Location:SE England
  • Interests:Bridge, hiking, cycling, gardening, weight training

Posted 2023-November-21, 01:49

View Postmw64ahw, on 2023-November-20, 12:06, said:

I'm a bit surprised that so many North's are passing ...


I don't play weak any two suited openings and the North hand is not a 1 opener for me.
0

#17 User is offline   thepossum 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,544
  • Joined: 2018-July-04
  • Gender:Male
  • Location:Australia

Posted 2023-November-22, 01:53

Me and GiB first attempt

2NT-3H-3S-4D-4S-5H-6C-6S lol

Will see what happens if I open 1 spade as North :)

Me and QPlus

1S-2C-2D-3S-4S-4NT-5D-5H-5NT-6S

Both bidding 2/1 - had to redeal because East jumped in with a weak 2 hearts
0

#18 User is online   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,168
  • Joined: 2009-July-13
  • Location:England

Posted 2023-November-22, 04:08

The actual layout was spades 3-2, diamonds 2-2, K, Q10, K all offside.

4 would net you an undeserved very poor score as the traveller read 3+3 once and 3N+3(S) at every other table.
0

#19 User is offline   mikeh 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 13,001
  • Joined: 2005-June-15
  • Gender:Male
  • Location:Canada
  • Interests:Bridge, golf, wine (red), cooking, reading eclectically but insatiably, travelling, making bad posts.

Posted 2023-November-23, 12:21

Late to the thread but I like to think that, in both of my regular partnerships, we’d easily reach 6D.

We play a T-Walsh method, in which we open 1C on all. Balanced hands out of range for notrump, including hands such as 3=3=5=2.

So we’d likely bid:

P. 1C
1H. 1N. 1H shows spades, 1N shows a balanced 17-19 with 3-3 spades


2H. 2S
3C. 3D. 2H transfers, so shows 5+ spades and is mandatory, since responder can be very light…we rarely pass 1C with a 5 card major
3C shows diamonds, gf, at least 5=4 and, if 5=4, some doubt about notrump. 3D shows a liking for diamonds

3H. Ambiguous. Could be a cuebid in support of a diamond slam try or could be heart values, stiff club and doubt about 3N
3S. Shows spade support and thus, since we bid 3D last round, either 3=4 or 3=5 in spades/diamonds and since responder is unlikely to bid 3N, forward going


After this, I think responder likely bids 4C and the auction pretty much can’t end below 6D. In some plausible sequences, somebody bids 5N offering a choice of slams, but both players would/should opt for diamonds, catering to 4-1 spades. Even at mps, I think 6D is the best contract, especially given that responder is a passed hand and, in a matchpoint field, most pairs don’t have the tools needed to have an informed decision.
'one of the great markers of the advance of human kindness is the howls you will hear from the Men of God' Johann Hari
0

Page 1 of 1
  • You cannot start a new topic
  • You cannot reply to this topic

1 User(s) are reading this topic
0 members, 1 guests, 0 anonymous users