[Fluffy]

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You don't bid the hand very straightforward, but you land in 6♥

♠5 is led and RHO will play 10 or 6 depending on your pick from dummy.

If it matters you can assume opponents are unable to duck ♦K

[Valardent]

♠Q, ♦Q.

1) looses to ♦K, 47.5% finding ♥Q

2) it holds, 2 lines :

a) finesse ♥Q through west(having played ♣+♠ if confident ♠ are 3-3 (additional chance of endplay with ♥Qx in East

b ) AK♥ then all black cards

3) it is covered, similar as 2)

So what is best, a) or b )?

a) would win over b ) about 14% if ♥ are 4-1 while b ) would win over a) about 13.5% (Qx)

Bcs b ) is safer for an endplay, I would choose b )

[Fluffy]

♦Q will hold

[gnasher]

Too hard.

[dake50]

Why didn't y'all get to 6NT? Just to avoid this brainbuster.
There I can play some discovery that will tell me something.

Agree Valardent line b.

[nige1]

Valardent, on 2010-November-30, 06:59, said:

♠Q, ♦Q.
1) looses to ♦K, 47.5% finding ♥Q
2) it holds, 2 lines :
a) finesse ♥Q through west(having played ♣+♠ if confident ♠ are 3-3 (additional chance of endplay with ♥Qx in East
b ) AK♥ then all black cards
3) it is covered, similar as 2)
So what is best, a) or b )?
a) would win over b ) about 14% if ♥ are 4-1 while b ) would win over a) about 13.5% (Qx)
Bcs b ) is safer for an endplay, I would choose b )

IMO Valardent and Dake50 are right. ♠Q, ♦Q.
If ♦Q loses to lHO's ♦K then you must guess which way to finesse hearts.
If ♦Q is covered or wins, then the two main lines are

• Finesse hearts. If you lose a ♥ trick then you will have to play off winners to guess whether LHO is more likely to hold ♦Tx or RHO ♦Kx
• Cash ♥AK winning against a singleton or doubleton ♥Q. Assume ♥Q doesn't drop but ♥ are 3-2. Cash plain suit winners and lead a ♥. If RHO has ♥Q and ♦K, you are home. If LHO has ♥Q and ♦T, you succeed, too.

IMO, both lines are about 65% but the second line is slightly better and more fun.

[Fluffy]

RHO had ♥Qxx ♦K10x