[Search for users] [Overall Top Noters] [List of all Conferences] [Download this site]

Conference turris::bridge

Title:The Game of Bridge
Moderator:COLLIS::JACKSON
Created:Thu Oct 30 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:1969
Total number of notes:14668

1965.0. "Two slam play problems from Collis (Revised)" by DAVIDB::DMILLER (This bug fix broke what???????) Fri May 16 1997 16:50

The original posted had a wrong hand 1, here's the revised vs from Collis:


Two very interesting slam play problems from last night's Andover Team 
of 4 Club Championships:
Declarer is at the bottom of each diagram.

The bidding:

  E        W
  1N*     4C
  4S      5C
  5S      6N

 *with great dislike

(Not scientific, but we were playing very few conventions and were a 
2nd time partnership.)  The S2 (standard leads, if that helps) is led 
to the S5, SQ and SK (or SA if you prefer).  Plan the play.  Defenders 
are good Flight B players.  If you really must know, the CK is on your 
left (but decide on a line without the benefit of that information.) 
 LHO shows out on the second round of diamonds pitching a heart.


             WEST
             65
             Tx
             AKQJx
             AQxx

             EAST
             AKTx
             AK98
             432
             Jx

Next problem:

The bidding:

  S    W    N    E
  2H   X    P     3H
  P     3S  P    4D
  P     4H  P    6S
  AP

The H6 is led to the H2, H5 and HQ.  Plan the plan in this delightful 
little slam.

        EAST
        AKQ10x
        J42
        Axxx
        x

        WEST
        986x
        AQ
        xx
        AJxxx

Solutions in a few days.
T.RTitleUserPersonal
Name
DateLines
1965.1My shot...CADSYS::GROSSThe bug stops hereFri May 16 1997 16:5918
Hand 1. I'll try the club finesse right away. If it wins I try
two finesses in hearts for the 12th trick. If it loses I try the
major-suit squeeze for the 12th trick. The lead of the low spade
suggests that the spade J is off side, in which case I'm going
down :-(.

Hand 2. There are 5 spade tricks and 4 obvious side suit tricks.
You can play for 3 ruffs in declarer's hand or you can play to
set up the 5th club. I am not particularly happy about our chances
of getting overruffed on the cross-ruff line, so I'd probably
play for a 2-2 split in trumps. AC, C ruff, AS. If the JS is
singleton I can safely cross-ruff for 12 tricks. Else KS (oops
if trumps don't split), AH, C ruff, H ruff, C ruff, AD, lose a
diamond, the last spade and the last club take the last 2 tricks.

Dave


1965.2Still like my original ideasDAVIDB::DMILLERThis bug fix broke what???????Fri May 16 1997 17:2127
	What a different the rounded suit holding makes in dummy.  With
	only HTx, I can't wait until the 3rd round to decided how to play
	the suit.  The 4th club in dummy makes it tempting to lead low
	towards CJ, giving me 3 club tricks if RHO pops with CK.

	However, a simple throw in approach a la my original replay
	will still work best:

	Win SA, take *two* diamonds, nothing LHO's discard.  (You'd take
	three rounds if they split 3-2).  Now run HT if not covered.  You
	are left with three tenances in the other suits, and LHO has to
	give you your 12th trick as long as he holds the CK.

	--------

	On hand two, I still go with my cross-ruff plan:

	Win HQ, HA, CA, C-ruff, D-A, HJ pitching a diamond no matter what
	RHO does.  I'm poised for the cross-ruff with:

			AKQT-xxx-

			986x--xxx

	in the two hands.  If LHO also pitches a diamond, dummy's 4th diamond
	may turn into a trick, in which case 2-2 spades will bring home the
	slam as well.  If LHO pitches a club, my 4th club may set up.
1965.3too much bidding.GAAS::BRAUCHERAnd nothing else mattersMon May 19 1997 10:0818
  On hand 1, I think SJ is off, greatly reducing squeeze chances.  For
 example, it doesn't work to go SA, DA, club to CJ-CK, because the double
 squeeze fails, as my hand is squeezed before LHO.  Therefore, I would
 win SA, and play small club to CQ, and then start running diamonds,
 pitching the fourth spade on the fourth diamond.  If LHO does not weaken
 his hearts, I become poised for an endplay in the majors.  It is going
 to come down to reading the opponents.

  The second hand is a hideous overbid.  Without this lead, I'd be near
 hopeless.  There are now two lines - trump D in hand, praying SJ does
 not score, or draw trumps and go for clubs.  The latter works in spades
 are 2-2 and clubs 4-3, or less likely, spades 3-1 with C-KQx somewhere.
 (ie, LHO with Jx Kxxxxx Kx Kxx).  HQ,CA, C ruff, SAK, HA, C ruff, H ruff,
 C ruff, DA, D, last two cards are a trump and the long club.  I'm inclined
 to try the latter, but not sure of the odds.

  bb
1965.4My guessSUBSYS::SENGUPTAShekhar Sengupta DTN 237-6785Mon May 19 1997 18:3256
Hand 1:
             WEST
             65
             Tx
             AKQJx
             AQxx

             EAST
             AKTx
             AK98
             432
             Jx
                 
When LHO discards a D, declarer should conclude that LHO started with
Jxxx-Jxxx-x-Kxxx or, at worst, Jxxx-Jxx-x-Kxxxx assuming that the
declaring side was strong in the minors. Dave's suggestion in .2
of running the HT at trick 4 is simple and sound, because we're
assigning CK to the hand longer in C.

However, if declarer wants to test his theory of LHO having CK
before giving up the lead, now LHO has to have 4-4-1-4 and needs to
pitch 1S, 1H and 1C when the play goes: SA-DA-DK-HA-CQ-DQ-DJ. 


		Dummy	
		5	
		-	
		x	
		Axx	
	LHO		RHO
	Jx		xx
	Jx		Qx
	-		-
	Kx		x
		Dec.
		AT
		K98
		-
		J

Now HA-H9 should set up the 4th heart in declarer's hand. By the way,
who had the CT and C9?

Hand 2:

If Spades are 3-1 with LHO having 3, I can't set up either hand unless
Club KQx is in one hand. Alternatively, S are 2-2 or if the SJ singleton,
life will be simpler.
    
To start, I'll win HQ and duck a D and see if the opponents give me any
help. Win any return, DA, SA, D ruff and now see what I can discover
about the distribution.

Whatever happens, I don't like my chances.
    
    Shekhar
1965.5early vs. late endplay...GAAS::BRAUCHERAnd nothing else mattersTue May 20 1997 11:1624
   I'm sorry you told us LHO has a single D plus CK, since that guarantees
 the contract - SA,DA, run H10.  If covered, win clear the hearts, take
 club finesse.  If not covered, LHO is endplayed for twelfth trick.  But
 what if LHO had a D or 3?  If LHO started with Jxxx QJxx xxx Kx, you are down
 that way, when the late endplay works after an immediate club finesse.

  Note that you cannot take DAKQ, then run H10, since LHO might have
 Jxxxx QJxxx x Kx, pitch fifth card in each major, then exit club KING,
 blocking the twelfth trick in clubs.  The "early" endplay requires
 that you keep a diamond entry to the third club trick.  But here again,
 after an immediate club finesse you can get home on a "late" endplay.

  The trouble with my playing for the "late" endplay is that I have to read
 LHO's cards.  The "early" endplay line doesn't depend on that, but it
 fails if LHO has a diamond exit.  For example, suppose LHO had a hand
 like Jxxx QJxx xx Kxx.  If you cash two diamonds, run H10, LHO is endplayed.
 If you take a club finesse and run 4 diamonds pitching a spade, LHO is
 squeezed out of his third club.  Now the fifth diamond, pitch a heart, CA,
 tuck him in with the third heart.  But how do I know to play that way ?

  bb

  
1965.6LHO can't have 5-5 in majorsSUBSYS::SENGUPTAShekhar Sengupta DTN 237-6785Tue May 20 1997 14:3612
    Re: .5
    
    > Note that you cannot take DAKQ, then run H10, since LHO might have
    > Jxxxx QJxxx x Kx, pitch fifth card in each major, then exit club KING,
     
    BB: The opening lead was given as S2 and standard leads were announced.
    
    That's why declarer's shape is most likely to be 4x1 or at worst
    4-3-1-5. There is a slight chance that declarer held QJxx of H and
    still led S2 but I'm willing to bet against it.
    
    Shekhar
1965.7OGOPW1::any01.viis.shr.dec.com::CohenWed May 21 1997 20:3056
> 
>             WEST
>             65
>             Tx
>             AKQJx
>             AQxx
> 
>             EAST
>             AKTx
>             AK98
>             432
>             Jx
> 
Win spade and take 2 rounds of diamond. When diamonds turn out to be 1-4 play LHO for 
4-4-1-4 or 4-3-1-5. (If LHO has lead a spade from Jxx I have blown it, but I don't think 
that RHO could afford to false card with QJ of spades.) Play a club to the J. If it wins I 
will wind up taking two heart hooks. (Again I don't think that LHO would lead from Jxx(x) 
instead of HQ from QJx(x)). If it loses, as I expect that it will, I intend to squeeze LHO 
in the black suits by winning the club or heart return, cashing heart(s) and then running 
the diamonds.

If diamonds prove to be (2-3) wind up needing 2 of 3 hooks (2 in hearts, one in clubs) and 
will start by taking heart hook.



> Next problem:
> 
> The bidding:
> 
>  S    W    N    E
>  2H   X    P     3H
>  P     3S  P    4D
>  P     4H  P    6S
>  AP
> 
> The H6 is led to the H2, H5 and HQ.  Plan the plan in this delightful 
> little slam.
> 
>        EAST
>        AKQ10x
>        J42
>        Axxx
>        x
> 
>        WEST
>        986x
>        AQ
>        xx
>        AJxxx
> 
> Solutions in a few days.

Well West certainly is an aggressive bidder! Double followed by a 4H cue! I'd take the 
simple line of try to split trumps, or JS single or KQx of clubs by drawing two rounds.
Complete guess. Too tired to compute odds.
1965.8And the answers are:STAR::DMILLERTue May 27 1997 16:1985
I've been away for classes, and system was down.  Sorry for any incovenience.

Here's the follow-up from Collis...

Here was the layout on the 6N slam.  6D is cold but we didn't have 
the
means to get there.

              WEST
              65
              Txx
              AKQJx
              AQx
SOUTH               NORTH
Jxx2                  Q9x
QJxxx                 x
x                     xxxx
K9x                   T8xx
             EAST
             AKTx
             AK98
             432
             Jx

As several have pointed out, please South for the KC and endplaying 
him
in hearts works out quite well and may well be the best line.  I took
the line Bob Cohen just suggested of a small diamond to dummy and a
club back towards the CJ.  When this fails and LHO returns a club, 
only
a black suit squeeze looked like a reasonable possibility.  When this
failed, I went down.


Here's the layout on the 6S slam:

           EAST
           AKQ10x
           Jxx
           Axxx
           z
NORTH                SOUTH
Jx                   75
xx                   K10xxxx
Kxxx                 Qxx
KQxxx                xx
           WEST
           986x
           AQ
           xx
           AJxxx

Here's Leon's thoughts on how he should have played the slam:

Opening H lead went to my Q, and I immediately took AD and gave up a D 
so I
could control 2nd round of H with AH and not worry (yet) about being 
over
ruffed with JS.  However, the much better play is to take QH and cash 
AH
immediately, then lead a D to Dummy's AD and lead JH, pitching my 
other D!

Now another H lead doesn't hurt me because dummy is also out of H, so 
I can
easily ruff out dummy's 3 remaining Diamonds, using club ruffs for
transportation to dummy, and dummy's high Spades will take the last 3 
tricks.  If on the 3rd round of H (JH loses to KH), North also pitches 
a D,
positioning himself to overruff, then I only need 2 ruffs to set up 
the 13th
D in dummy, which can be cashed at trick 13 after pulling trump.

As a side benefit, the 3rd round of H forces North to pitch (unless he 
wants
to ruff his partner's winning KH) either a D or a C.  The D pitch 
allows me
to make as noted above, and a C pitch would also give me two winning 
ways to
play - either ruffing 3 Ds as noted above or playing on C which will 
now set
up also.

Collis