[Wackojack]

---

3♣ Stayman
3♥ 4 cards
3♠ 4 card ♥ raise
4NT ♥ 0314
5♦ 1 or 4

Partner leads the K♠ you encourage (sic!) with the 7 and partner switches to the 7♣. Declarer's losing spade gets parked on dummies 4th diamond.

[Fluffy]

depends on dummy, but I would normally overtake

[EricK]

Fluffy, on 2014-February-24, 12:28, said:

depends on dummy, but I would normally overtake

3rd hand high; cover an honour with an honour. All the bridge rules tell you to overtake here

[gszes]

if p is trying to find a killing lead there is little to no benefit to leading
the K (empty) when his RHO (the 2N opener) rates to have the power. A low lead
from the K under those circumstances might get a misguess from declarer. When
p leads the K under these conditions it is pretty much 100% they have the Q so
rather than trying to be cute use brute force and overtake and return unless
you have a strong reason to avoid doing that (no such circumstance is present
here). Normal opening lead and the lack of overtake was the weak play:))))))))

[Wackojack]

---

Sorry the whole point of the post was lost when I didnt show the east hand which I meant to do. I was the idiot South partnering a robot against a robot west declarer.

Yes just overtake. But partner robot might be a genius finding the killing lead from Kx. Robot west apparently has nothing to gain and everything to lose by ducking, seeing the J♠ in dummy. So Robot North should twig that Robot West cannot have the ace unless he is playing a doubly deep game. So to allow for the possibility that Robot partner was a genius I did not overtake.

However, as was said by gszes from Kx the lead of the x might be more likely to succeed.

[Zelandakh]

You said the 7 was encouraging - is that actually true for robots?

[mcphee]

Please explain why S needs to overtake? If declarer held the A facing dummies J they win.

[Fluffy]

declarer had open 2NT, so he cannot have spade singleton, so it is your fault if it is IMPs, at MPs there could be some appeal for 2 down and I would need to think more.

There is a zero chance of a Kx lead against a slam in dummy's suit.

If declarer could have spade singleton it would be different since ♠A could squeeze partner or even endplay him if declarer is void (see hand 22 of the NEC Cup challengue on my website for a sad story about overtaking)