[The_Badger]

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Rubber bridge from a few nights ago. Plan the play. West's 2NT is unusual (minors).

West leads ♣K, East contributing the ♣3 (standard) If you decide to duck, West switches to ♠10

N.B. After I withdrew the solution after wank's analysis, I noticed something that changes the dynamics of the hand. On the first trump lead from either hand, East plays the ♥5.

[wank]

i should let someone else have a go

[The_Badger]

i should let someone else have a go

That's good of you. I have withdrawn the solution.

[nige1]

The_Badger, on 2017-September-23, 03:50, said:

Rubber bridge from a few nights ago. Plan the play. West's 2NT is unusual (minors).

West leads ♣K, East contributing the ♣3 (standard) If you decide to duck, West switches to ♠10

N.B. After I withdrew the solution after wank's analysis, I noticed something that changes the dynamics of the hand. On the first trump lead from either hand, East plays the ♥5.

Spoiler

Possible line:
Try to elope with your small trumps.
For example...
Duck ♣K.
Win ♠ switch with ♠K.
Cash ♥AK, ♣A
Cross to ♠A and ruff a ♠
Cross to ♦A and ruff a ♠
Ruff a ♣ and ruff a ♠
Concede the last 2 tricks.

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[LBengtsson]

nige1, on 2017-September-23, 14:45, said:

Spoiler

Possible line:
Try to elope with your small trumps.
For example...
Duck ♣K.
Win ♠ switch with ♠K.
Cash ♥AK, ♣A
Cross to ♠A and ruff a ♠
Cross to ♦A and ruff a ♠
Ruff a ♣ and ruff a ♠
Concede the last 2 tricks.

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if east have QJT95 ♥ youre down

[johnu]

LBengtsson, on 2017-September-23, 15:07, said:

if east have QJT95 ♥ youre down

Do you have a line of play to make if that's the layout?

[LBengtsson]

yes. if trumps 5-0 east play ♥ 5 finesse ♥ 7. but is east west trump 5-0 4-1 i dont know false card ♥ 5 if 5-0 decclarer think 4-1. am i wrong

[Cyberyeti]

nige1, on 2017-September-23, 14:45, said:

Spoiler

Possible line:
Try to elope with your small trumps.
For example...
Duck ♣K.
Win ♠ switch with ♠K.
Cash ♥AK, ♣A
Cross to ♠A and ruff a ♠
Cross to ♦A and ruff a ♠
Ruff a ♣ and ruff a ♠
Concede the last 2 tricks.

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You really think E doubles on a pile like that ?

I do know the first heart I lead will be the 8 from dummy just to try to catch E covering from J109x or QJ10x

[nige1]

LBengtsson, on 2017-September-23, 15:07, said:

if east has QJT95 ♥ you're down

Cyberyeti, on 2017-September-24, 03:24, said:

You really think E doubles on a pile like that ? I do know the first heart I lead will be the 8 from dummy just to try to catch E covering from J109x or QJ10x

If RHO has 4♥s, then declarer is likely to succeed, whether or not RHO plays an honour.
If RHO has ♥ Q J T 9 5 and covers the ♥8 from dummy then the defence should prevail.
Hence, if you're confident that RHO has 5♥s for his double, then your best chance is to lead a small ♥ from dummy, in the hope that RHO plays a careless ♥5.
IMO LHO's vulnerable 2N overcall is braver than RHO's double with good major holdings.

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Similarly here.

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[johnu]

LBengtsson, on 2017-September-23, 22:32, said:

yes. if trumps 5-0 east play ♥ 5 finesse ♥ 7. but is east west trump 5-0 4-1 i dont know false card ♥ 5 if 5-0 decclarer think 4-1. am i wrong

I may be wrong, but even GIB would play a high heart from QJ1095 on a low heart from dummy.

[dokoko]

johnu, on 2017-September-24, 14:36, said:

I may be wrong, but even GIB would play a high heart from QJ1095 on a low heart from dummy.

GIB cannot make deceptive plays on purpose. As playing low cannot gain in double dummy play, GIB won't do it.

[ncohen]

nige1, on 2017-September-23, 14:45, said:

Spoiler

Possible line:
Try to elope with your small trumps.
For example...
Duck ♣K.
Win ♠ switch with ♠K.
Cash ♥AK, ♣A
Cross to ♠A and ruff a ♠
Cross to ♦A and ruff a ♠
Ruff a ♣ and ruff a ♠
Concede the last 2 tricks.

---

I see a double dummy declarer line for down 1:

duck first club, win spade, ruff club, duck heart. Now, W is endplayed. a diamond goes to the Q. a club is ruffed in dummy, with a diamond discard. It doesn't matter if E overruffs -- that costs the defense a trump trick.
But, you're going to lose 2 trumps, a diamond, and a club.

You can make with horrible defense:
W returns a club, ruffed in dummy and E discards a spade. Now, cash 2nd S, ruff S, D to A, ruff 2nd spade. Cash two high trumps. E is left with two high trumps when declarer has a diamond and small trump left. Otherwise, if W returns a diamond or E overruffs or discards a diamond on W's club, it's down 1.

[Cyberyeti]

ncohen, on 2017-September-25, 18:44, said:

I see a double dummy declarer line for down 1:

duck first club, win spade, ruff club, duck heart. Now, W is endplayed. a diamond goes to the Q. a club is ruffed in dummy, with a diamond discard. It doesn't matter if E overruffs -- that costs the defense a trump trick.
But, you're going to lose 2 trumps, a diamond, and a club.

You can make with horrible defense:
W returns a club, ruffed in dummy and E discards a spade. Now, cash 2nd S, ruff S, D to A, ruff 2nd spade. Cash two high trumps. E is left with two high trumps when declarer has a diamond and small trump left. Otherwise, if W returns a diamond or E overruffs or discards a diamond on W's club, it's down 1.

But why would you do this as the contract is cold on this layout.

Win the spade
trump to A
Spade to K
spade ruff
A clubs
club ruff
spade ruff
diamond to ace
spade ruff with a top heart to come

[johnu]

dokoko, on 2017-September-25, 14:22, said:

GIB cannot make deceptive plays on purpose. As playing low cannot gain in double dummy play, GIB won't do it.

GIB makes plenty of plays that can't be right when analyzed double dummy, in addition to making plenty of plays that can never be right unless tossing random cards is the standard of play.