BBO Discussion Forums: a 3NT defence - BBO Discussion Forums

Jump to content

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

a 3NT defence

#1 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2016-November-06, 08:38

This week's problem I though was not very difficult, but so far only 5% of the players have managed to defeat the contract, so maybe it isn't that easy :)

You can try it here: http://www.bridgegod....php?probid=624
0

#2 User is offline   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,208
  • Joined: 2009-July-13
  • Location:England

Posted 2016-November-06, 09:05

I don't think declarer plays this very well, you can't beat it if he plays it correctly, the actual diamond holding is more likely than 4-0 onside and you're an entry short to pick that up anyway, surely you should play for 2-2 and play the A first solving all issues on the lie of the cards.
0

#3 User is offline   alok c 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 283
  • Joined: 2015-February-25

Posted 2016-November-06, 10:11

View PostCyberyeti, on 2016-November-06, 09:05, said:

I don't think declarer plays this very well, you can't beat it if he plays it correctly, the actual diamond holding is more likely than 4-0 onside and you're an entry short to pick that up anyway, surely you should play for 2-2 and play the A first solving all issues on the lie of the cards.

That way the contract will always be defeated as you can't get 2nd entry to East till 4th is played to cash but you will lose 5th trick.Best way was West to play at trick 2 & take return by A & play another (as the cards lie but unseen there is a chance of losing a trick to 3 carder Q with South).
0

#4 User is offline   rhm 

  • PipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 3,092
  • Joined: 2005-June-27

Posted 2016-November-06, 10:20

View PostCyberyeti, on 2016-November-06, 09:05, said:

I don't think declarer plays this very well, you can't beat it if he plays it correctly, the actual diamond holding is more likely than 4-0 onside and you're an entry short to pick that up anyway, surely you should play for 2-2 and play the A first solving all issues on the lie of the cards.

Maybe the real issue is playing diamonds before clubs?

Rainer Herrmann
0

#5 User is offline   Cyberyeti 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 14,208
  • Joined: 2009-July-13
  • Location:England

Posted 2016-November-06, 10:39

View Postalok c, on 2016-November-06, 10:11, said:

That way the contract will always be defeated as you can't get 2nd entry to East till 4th is played to cash but you will lose 5th trick.Best way was West to play at trick 2 & take return by A & play another (as the cards lie but unseen there is a chance of losing a trick to 3 carder Q with South).


I was intending to cash the A, then when the Q drops switch to clubs, you can equally cash AK and if they're 2-2 then switch to clubs, you need 5 diamond tricks, small to the K is horrible as I think it loses to all non 2-2 breaks.
0

#6 User is offline   Kaitlyn S 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,092
  • Joined: 2016-July-31
  • Gender:Female

Posted 2016-November-06, 11:35

View PostFluffy, on 2016-November-06, 08:38, said:

This week's problem I though was not very difficult, but so far only 5% of the players have managed to defeat the contract, so maybe it isn't that easy :)

You can try it here: http://www.bridgegod....php?probid=624
I was one of the 95%. When the C10 was lead, I thought declarer might have:
xx, AKx(x), Kxxx, KJT(x)
and was trying to steal the ninth trick.

Is there something wrong with my reasoning?
0

#7 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2016-November-07, 12:40

I don't see anything wrong.
0

#8 User is offline   jexa_ 

  • PipPip
  • Group: Members
  • Posts: 33
  • Joined: 2016-September-10

Posted 2016-November-09, 07:32

Is it only me that i would lead something else ?
0

#9 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2016-November-09, 15:07

I think other leads are unatractive because the bidding is invitational. If they had a stronger auction there would be a strong case for a club lead. On this hand a club lead gives declarer the 9th trick before he loses comunication with the diamond, so I didn't allow it for lack of interest.
0

#10 User is offline   Kaitlyn S 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,092
  • Joined: 2016-July-31
  • Gender:Female

Posted 2016-November-09, 15:57

View PostFluffy, on 2016-November-09, 15:07, said:

I just noticed this. Hopefully you won't mind if I have questions about other hands :D
0

#11 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2016-November-10, 01:25

I love to talk about my website :)
0

#12 User is offline   WesleyC 

  • PipPipPipPipPip
  • Group: Full Members
  • Posts: 878
  • Joined: 2009-June-28
  • Gender:Male
  • Location:Australia

Posted 2016-November-23, 10:11

I'm probably being overly critical here, but I struggled on this problem.

Fundamental to any defensive problem is a clear explanation of partner's first signal. On the hand I also couldn't see a explanation of the 3D bid.

Assuming natural signals, partner discouraged strongly at T1 despite almost certainly holding 4 hearts. When declarer opened clubs, partner is absolutely marked with strong spades. Playing declarer for something like [xx AKxx Kxxx KJT] where they need to sneak one trick, feels a lot more likely than the actual layout, where declarer (for no reason) severs communications at trick 2 by playing a small diamond up on an otherwise untouchable hand...
0

#13 User is offline   Kaitlyn S 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 1,092
  • Joined: 2016-July-31
  • Gender:Female

Posted 2016-November-23, 14:10

Just curious - am I supposed to be playing these hands at IMPs or matchpoints? Your discussion said I was trying to beat -140, so I am assuming matchpoints. I went and tried a random deal from a practice set. Am I assuming matchpoints for all the problems?
0

#14 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2016-November-27, 02:46

Hands are scored in match points in the practice section against other players on same situation, but most of them have a clear total points goal. When overtricks matter it is usually stated that it is MPs scoring.

When I said here that the field was in -140, actually only people who came from BBF had that info. Goal was to do best a possible. I see it is confusing and I will refain from doing it in the future.
0

#15 User is offline   Fluffy 

  • World International Master without a clue
  • PipPipPipPipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 17,404
  • Joined: 2003-November-13
  • Gender:Male
  • Location:madrid

Posted 2016-November-27, 02:48

View PostWesleyC, on 2016-November-23, 10:11, said:

I'm probably being overly critical here, but I struggled on this problem.

Fundamental to any defensive problem is a clear explanation of partner's first signal. On the hand I also couldn't see a explanation of the 3D bid.

Assuming natural signals, partner discouraged strongly at T1 despite almost certainly holding 4 hearts. When declarer opened clubs, partner is absolutely marked with strong spades. Playing declarer for something like [xx AKxx Kxxx KJT] where they need to sneak one trick, feels a lot more likely than the actual layout, where declarer (for no reason) severs communications at trick 2 by playing a small diamond up on an otherwise untouchable hand...



The 1NT and 3 diamond bid are alerted, if you click on them on the bidding diagram, they will tell you the 1NT rebid range and teh 3 range.

After the bidding is over the box in the lower left corner will read "UDCA"
0

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

2 User(s) are reading this topic
0 members, 2 guests, 0 anonymous users