its beyond me good problem ))) cant wait to see answer
Spoiler
Gib (enabled) reveals the solution:
Any deviation from the winning line is fatal.
After East wins ♠A and returns a ♣:
Win ♣A.
Overtake ♦Q.
Lead ♥J covered by ♥Q and ♥A.
Overtake ♦J.
ruff a ♦.
Exit with a small ♥ won by RHO.
Win the ♣ return in dummy.
Lead a good ♦. Unless RHO ruffs low, discard your losing ♠.
Lead another good ♦ and ruff it.
Cross to dummy in ♣s.
Coup RHO's trumps.
Double-dummy declarer problem.
Against South's 4♥,
West leads ♠K to East's ♠A.
East returns a small ♣