So here's the whole hand as presented by Rodwell:
The lesson was that West should have dropped the Jack of clubs under the King.
However, I think that the declarer played the hand wrong. There is little hope of picking up the clubs for just one loser, and I don't think there's much hope of an endplay, but it's likely that West has a club honor (T,J or A), with at most two clubs. I think the play should be as follows:
I should say that I just now realized why my line isn't good (count your losers
). The reason I thought this was better was that it would never give West the chance to unblock. It's clear to me now that you need to hope that West has a doubleton T or J (or both!) and doesn't find the unblock. Anyways, hope you found this as interesting as I did.
Intriguing. Grasping at straws: On the auction, It seems likely that RHO has the minor suit aces. Maybe the defensive error was RHO squandering ♠9 from ♠94.. You could play RHO for at least six diamonds. Win ♠A, ♥ KQ, and lead a ♦ to ♦Q. Presumably, RHO wins ♦A and leads a ♠. but LHO has to win and lead a ♣ allowing declarer to make if If LHO has at least one of ♣JT.
Suppose, however, that opponents can cash ♦A, a ♠ and exit safely in ♦. Then cash ♦s, If LHO follows, you can lead a ♣ to ♣K and another ♣ towards dummy. If LHO has ♣JT doubleton (or even ♣Jx if he failed to unblock on the first round) then you succeed. I look forward to the real solution.