Your partner East opens with 3S but North doubles and South bids 4H passed out. Partner leads the SA, then SK and finally SQ. Dummy ruffs this third trick with the HJ. What is your plan seeing these cards:
NORTH
S J7
H AQJ
D KJ4
C A8752
EAST WEST (YOU)
S AKQ? S 96
H ? H KT3
D ? D T9862
C ? C T94
SOUTH
S 82?
H ?
D ?
C ?
If you over-ruff with the HK, what are you planning to do next? Where do you imagine the setting trick is going to come from?
Partner can not have the DA or even CK as that would give him an opening hand that would have opened 1S. Have to think again.
The real chance for a fourth trick is your HT - and that will only be promoted to a trick if you do not overruff the HJ. Simple in hindsight perhaps, but hard to discard a diamond without hesitation at the table!
This hand comes from pp 51-52 of Victor Mollo & Nico Gardener Card Play Technique - or the art of being lucky (Masterpoint Press, Revised Edition, 2013) - a Peninsula Bridge Club library book, currently loaned to yours truly.
