BBO Discussion Forums: BBO makeable slams - #02 - BBO Discussion Forums

Jump to content

  • 2 Pages +
  • 1
  • 2
  • You cannot start a new topic
  • You cannot reply to this topic

BBO makeable slams - #02 Combining chances

#1 User is offline   inquiry 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Admin
  • Posts: 14,566
  • Joined: 2003-February-13
  • Gender:Male
  • Location:Amelia Island, FL
  • Interests:Bridge, what else?

Posted 2004-September-17, 10:14

Beginner/Intermediate hand to answer -- only novice, beginners, and intermediates should post replies before before september 19th Thank you for giving them a chance to discover the right play among themselves.

I have started a series of threads on slams that can make, but went down in bridgebase online games. Most will be in the interesting thread section, but some, like this one, that illustrate basic play prinicples will be posted here in the beginner/intermediate forum. This hand from may 8, 2004, had mixed results in slam, some made, some down. See how you do.

Scoring: IMP

1 - 2
2 - 3
4 - 4 *
5! - 6NT
Pass

3 = Reverse, stong hand
4 = kickback form of RKCB
5 = two keycards, no club queen


Opening lead 8.
--Ben--

#2 User is offline   twcho 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 327
  • Joined: 2003-September-04
  • Gender:Male
  • Location:Hong Kong

Posted 2004-September-17, 19:55

Ben, do u really mean this hand for beginner and intermediate? I consider this even too difficult for me and I regard myself being advanced player. :-((
0

#3 User is offline   blover 

  • PipPip
  • Group: Members
  • Posts: 12
  • Joined: 2004-September-11
  • Gender:Male

Posted 2004-September-17, 20:11

I hope i'm qualifed as intermediate player, so i will answer this one:
Win A, then finesse J, if i can win 5 tricks i need only 3 tricks in , otherwise i will try to get all 4 tricks
0

#4 User is offline   paulhar 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 468
  • Joined: 2004-June-18
  • Location:Fort Myers, FL
  • Interests:Challenge square dancing (besides the obvious)

Posted 2004-September-17, 20:44

twcho, on Sep 17 2004, 08:55 PM, said:

Ben, do u really mean this hand for beginner and intermediate? I consider this even too difficult for me and I regard myself being advanced player. :-((

I agree :rolleyes: I have a line but I have no clue whether it's best.
I tend to lead fourth best - as opposed to the best suit, the second best suit, or the third best suit for our side
0

#5 User is offline   badderzboy 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 450
  • Joined: 2003-June-08

  Posted 2004-September-18, 02:41

♠ J
♥ AKJT9
♦ T874
♣ K64

♠ AK6
♥ 5
♦ AKJ5
♣ AJ953

I'm a BILlie so I'll have a go...

My top tricks are AK, AK, AK,AK so I need to create 4 extra tricks.

West has lead the 8 so I'd be sure that East has the Q :unsure: as the 8 can't be 4th highest just passive and probably top of nothing.

We can afford to lose 1 trick in the minors :rolleyes: and make four extra tricks and we can do this if only 1 finesse loses and the clubs break better than 4-1 with the Singleton being Q or 10 as we cash the King clubs first.

We can be pretty certain one finesse will lose from the passive lead.

We are short of entries to the north hand so we need to take the Diamond finesse
first by playing the 4 after winning with A to the Jack.

If the finesse wins then cash a top diamond and if both follow cash the other preserving 10 [R-DI] as an entry.

We can now play the 9 Clubs from south and cover West's card or run 9 if he doesn't. We can then make the remaining clubs after cashing KC on next round I hope?

If the finesse loses then we need to play Clubs for 5 tricks. Cash K Clubs and finesse to J and then A.

Anywhere near :huh:
0

#6 User is offline   EricK 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,303
  • Joined: 2003-February-14
  • Location:England

Posted 2004-September-18, 02:56

paulhar, on Sep 18 2004, 02:44 AM, said:

twcho, on Sep 17 2004, 08:55 PM, said:

Ben, do u really mean this hand for beginner and intermediate? I consider this even too difficult for me and I regard myself being advanced player. :-((

I agree :rolleyes: I have a line but I have no clue whether it's best.

I disagree.

I think this is an excellent problem for Intermediates. It involves a technique which is easy to understand, yet widely applicable.

A problem which is suitable for this forum is not one which the most of the intended audience can solve, but one which the audience can learn from.

Eric
0

#7 User is offline   Flame 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,085
  • Joined: 2004-March-26
  • Location:Israel

Posted 2004-September-18, 08:16

If i understand corectly,the hands Ben is posing are hands he went down, meaning its a hand even an expert can go down playing. This one im pretty sure i know the right line, but im not sure i would play it right at the table.
0

#8 User is offline   inquiry 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Admin
  • Posts: 14,566
  • Joined: 2003-February-13
  • Gender:Male
  • Location:Amelia Island, FL
  • Interests:Bridge, what else?

Posted 2004-September-18, 08:48

Flame, on Sep 18 2004, 10:16 AM, said:

If i understand corectly,the hands Ben is posing are hands he went down, meaning its a hand even an expert can go down playing. This one im pretty sure i know the right line, but im not sure i would play it right at the table.

These are hands that I found on BBO, the vast majority of them I did not play. I actually kibitz more than I play, and I look at hands after they were played where I didn't kibitz more than I kibitz.

And I think Eric is exactly right with his comments. Many people went down on this one, and yet, it really is quite simple to come up with a "best" line, at least imho. But who knows? I guess all plays can be hard until you see the trick.

This one will be too hard for beginners, but I think (thought?) intermediates would have a shot at it, especially with the subtitle hint.

Ben
--Ben--

#9 User is offline   Flame 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,085
  • Joined: 2004-March-26
  • Location:Israel

Posted 2004-September-18, 13:53

Its not a classical combining chances problem, it has entry problems. I wonder if those who think they solved it including Ben, have the same line. I would guess they dont.
Also its intresting to see if the play would change after a spade lead (with Q on RHO)
0

#10 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 2004-September-19, 06:07

I am not really sure, but I don´t believe 8 at all so my line is:

J, if it loses try later AK if Q appears bare or doubleton amke 2, 4, 4, 2. If it doesn´t try 3-2 with Q onside.

If J wins try to the J, and combine the chancees in red suits then.
0

#11 User is offline   luke warm 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,951
  • Joined: 2003-September-07
  • Gender:Male
  • Interests:Bridge, poker, politics

Posted 2004-September-19, 10:16

first of all, i agree that this might not be a beginner's problem (maybe even an intermediate's)...

i can't find any squeeze, cause of entries, though a spade diamond on rho and spade club on lho looks like it's almost there... hell i don't know, i guess i'd play the A,K, the A,K, then (if no good news) finesse the club

i'll get some more coffee and look again
"Paul Krugman is a stupid person's idea of what a smart person sounds like." Newt Gingrich (paraphrased)
0

#12 User is offline   EricK 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,303
  • Joined: 2003-February-14
  • Location:England

Posted 2004-September-19, 10:25

luke warm, on Sep 19 2004, 04:16 PM, said:

first of all, i agree that this might not be a beginner's problem (maybe even an intermediate's)...

i can't find any squeeze, cause of entries, though a spade diamond on rho and spade club on lho looks like it's almost there... hell i don't know, i guess i'd play the A,K, the A,K, then (if no good news) finesse the club

i'll get some more coffee and look again

With that line, if there is no good news, you are already a trick short even if the behave (2, 2, 2, 5).

Counting your tricks is a habit which everyone should have!

Eric
0

#13 User is offline   inquiry 

  • PipPipPipPipPipPipPipPipPipPip
  • Group: Admin
  • Posts: 14,566
  • Joined: 2003-February-13
  • Gender:Male
  • Location:Amelia Island, FL
  • Interests:Bridge, what else?

Posted 2004-September-19, 11:31

Flame's general line is correct. Here is the logix.

1) Hearts is a source of a lot of tricks. Play to set them up. Either hook the jack now (at trick one), or win the ACE and continue them. I like the hook ok. This will give you four sure tricks. West wins and returns a spade. You have to win the ACE.

2) With playing hearts you have 4H + 2C +2D +2S, that is 10 tricks, so you need two more.

3) You will need to finessee one of the minor queens (but not both). So the theory here is cash the AK in one of them before (eventually) trying the other. Generally you would cash the diamond ACE (singleton Queen in either hand will give you 12 tricks). Then, if nothing intersting happened. You have to decide whether to cash a second diamond or to cash the club ace. After cashing the second minor suit winner if your hand, you cross the to the club king. This way, you make if either opponent has a doubleton in the minor suit you cashed, and if not, after running the hearts, you will finessee the queen in the second suit.

Ben
--Ben--

#14 User is offline   mpefritz 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 113
  • Joined: 2003-September-24

Posted 2004-September-19, 11:45

Ben, if someone wins the AK, then leds the J, won by EAST/WEST who then returns another heart, you MUST make up your mind too early on which minor suit to play for 4 tricks! (pitch a spade and club on the 2nd and 3rd heart). therefore MUST hook at trick 1. see below.

My thoughts:

Play the J.
If it loses, win any return in hand , including a club return! (or
heart on board). Cash one top diamond (do NOT tell me 9 shows
up..I don't want to hear about it...so I close my eyes and ask if Q
showed up), 2 top spades, CLUB A, CLUB K.
If the neither minor suit queen has shown up, cash remaining hearts,
saving diamonds (unless someone pitches highest black card).
Now hook in diamonds, leading the T if the 9 had already shown up.
I don't think I would object to playing AK of diamonds first, but on club return, I think you lose than luxury.

If J WINS, lead T, pitching a spade. If T loses and a
heart is returned, pitch a club. otherwise play as above.

If T wins and someone started with 5 (my least favorite choice of
happenings), now I am not sure whether a club hook or diamond hook is
best now. Here I think hooking in clubs makes sense as the club K is
another entry to hook in diamonds. It also gives me a chance to make 4 club tricks even if first round hook loses.

fritz

(this is how I see it.)
0

#15 User is offline   Flame 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,085
  • Joined: 2004-March-26
  • Location:Israel

Posted 2004-September-19, 12:05

inquiry, on Sep 19 2004, 12:31 PM, said:

Flame's general line is correct. Here is the logix.

It was my line but i didnt post it, fluffy did. :)
btw blover's line is not too bad either, but one need to see that getting 3 diamond tricks isnt ovious, because of the entry problem.
0

#16 User is offline   luke warm 

  • PipPipPipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 6,951
  • Joined: 2003-September-07
  • Gender:Male
  • Interests:Bridge, poker, politics

Posted 2004-September-19, 14:59

EricK, on Sep 19 2004, 06:25 PM, said:

luke warm, on Sep 19 2004, 04:16 PM, said:

first of all, i agree that this might not be a beginner's problem (maybe even an intermediate's)...

i can't find any squeeze, cause of entries, though a spade diamond on rho and spade club on lho looks like it's almost there... hell i don't know, i guess i'd play the A,K, the A,K, then (if no good news) finesse the club

i'll get some more coffee and look again

With that line, if there is no good news, you are already a trick short even if the behave (2, 2, 2, 5).

Counting your tricks is a habit which everyone should have!

Eric

and drinking coffee.. and waking up... and not posting till at least one of those things has been done... thx, you're right
"Paul Krugman is a stupid person's idea of what a smart person sounds like." Newt Gingrich (paraphrased)
0

#17 User is offline   badderzboy 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 450
  • Joined: 2003-June-08

Posted 2004-September-20, 00:24

I sort of see the logic but aren't you pinning hopes by playing the J that the opps are lying i.e. 8 is a passive lead. You still need the Q to be in at worst a trebleton so it drops under AK which is pretty poor odds (it must be less than 50%). given there are 7 outstanding.

Whereas the finesse of Q and/or Q is slightly less than a 75% shot combined (needs East not to have Qxxx)?

Playing for the drop of a Q is also less than 50% in each case with Clubs more likely to drop the Queen than Diamonds?

I'm obviously going wrong somewhere in the analysis as the 'xperts all do something different - can you correct me please :rolleyes:

Steve
0

#18 User is offline   EricK 

  • PipPipPipPipPipPip
  • Group: Advanced Members
  • Posts: 2,303
  • Joined: 2003-February-14
  • Location:England

Posted 2004-September-20, 00:36

badderzboy, on Sep 20 2004, 06:24 AM, said:

I sort of see the logic but aren't you pinning hopes by playing the J that the opps are lying i.e. 8 is a passive lead. You still need the Q to be in at worst a trebleton so it drops under AK which is pretty poor odds (it must be less than 50%). given there are 7 outstanding.

Whereas the finesse of Q and/or Q is slightly less than a 75% shot combined (needs East not to have Qxxx)?

Playing for the drop of a Q is also less than 50% in each case with Clubs more likely to drop the Queen than Diamonds?

I'm obviously going wrong somewhere in the analysis as the 'xperts all do something different - can you correct me please :rolleyes:

Steve

What tricks are we trying to make?

On top, we have AK in every suit. That is 8, so we need 4 more. If we can find the Q in either minor suit, we will get 2 more tricks, and the long hearts are another 2 tricks.

We can't make the long without giving up the lead once (unless we are lucky and drop the Q). So we have to do that first, before we have set up any more tricks for the opps.

Once we have driven out the Q, we turn our attention to the minor suits. We could take a guess as to which finesse to take, and if we are right (50% of the time) that would give us the contract. But if we are wrong, we are down straight away.

By first playing the AK in the other minor suit, we significantly add to this percentage, because if we drop the Q, we make our contract, and if we don't we can still try the finesse.

Is that clearer?

Eric
0

#19 User is offline   badderzboy 

  • PipPipPipPip
  • Group: Full Members
  • Posts: 450
  • Joined: 2003-June-08

Posted 2004-September-20, 06:34

Could sometime show us the combined odds of each line including why playing both finesses in the minors (and minor with successful finesse not 4-1) is poorer than playing out the Hearts followed by AK 1 minor and finesse in the other?

I know there is 27% chance of honour being doubleton when 5 cards out and 5.66% chance it is singleton so 32.66% chance of dropping Q in either suit?


This is somewhat intriguing to me as a newish player with a statistics background?

Steve
0

#20 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 2004-September-20, 06:58

This hand has an interesting flaw, I don´t see any kind of line that will end up with 11 top tricks and 1 loser, therefore there is no possible standard squeeze at all.
0

  • 2 Pages +
  • 1
  • 2
  • 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