CARE REQUIRED (OR TIME TO CONSIDER PLAN B) by David Stern - Australia

This seemingly innocuous board was reported to me by countryman Bobby Evans:

Game All. Dealer South.
S 6
H K4
D KT65
C AQJ964
S T8753 S J9
H AQJ H 986532
D A874 D Q
C 3 C K872
S AKQ42
H T7
D J932
C T5

West played in the par spot of three hearts on the lead of the SQ. The play proceeded two rounds of spades by South followed by a trump switch -- the best chance for the defense to prevail. Declarer did well winning the HA and continuing with the HQ, denying North an easy exit and leaving this position:

S --
H --
D KT65
C AQJ94
S T87 S --
H J H 9865
D A874 D Q
C 3 C K872
S A42
H --
D J932
C T5

It appears that North's safest action is to play CA and CQ, but if you would like to be able to report the following double squeeze better go for plan B:

S --
H --
D KT
C Q
S -- S --
H -- H --
D A8 D Q
C -- C 2

S K
H --
D J
C –

With South having to hold on to the SK ahead of dummy's spade discard, North finds himself squeezed between his doubleton diamond and high club. Plan B requires the switch to the DK which does not give away a trick and breaks up the squeeze.