Posted 2013-August-20, 06:18
It can't be wrong to win the first trick with ♦A and cash ♣A. When the 5-0 club break is revealed play a diamond to dummy (you need a 3-2 break) and start playing out dummy's winners. East must ruff at some point: when he does, you overruff high and re-enter dummy in trumps. When you repeat this process, re-entering dummy draw's East's last trump. Now any remaining winners in dummy can be cashed. You're still one down, but presumably the objective is not to go more down.
If West follows to the first club, continue with a low club to dummy. If West shows out, a similar line to the above will now make the contract.
If West follows to two rounds of clubs, discard ♦10 on ♠K, ruff a diamond high, re-enter dummy in trumps and discard 4 heart losers on the diamonds.
I'm prepared to give up the overtrick if both minor suits break 3-2.