[Trumpace]

You reach 6D.

LHO leads a heart.

You see:

Scoring: Rubber

lead ♥.

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Plan the play.

[frouu]

I think yes, my hidden solution below

Spoiler

win the ♥ lead with ace, play ♦AK, if ♦ are 3-2 no problem, we can pull the remaining trump, and ruff the 4th ♠ in the hand, we only lose a ♣ in the dummy.

if we learn that west started with 4♦, play a ♠ to K, and lead a ♠ towards dummy,
-----if west ruffs, win the return, pull the remaining trump and discard two ♣ to ♠AQ, and ruff a ♣, dummy is good.
-----if west doesn't ruff, ruff a ♠ with ♦J, pull remaining trumps, the dummy has only one loser, a ♣

if we learn that east started with 4♦, lead a ♥ to K,
-----if east ruffs, win return, pull the remaining trump, we can discard a ♣ to ♥ K and ruff the 4th ♠, dummy is good.
-----if east doesn't ruff, ruff the small ♥ with ♥Q in dummy, pull remaining trumps, and discard a club, to third ♠, the hand has only one loser, a club.

[Trumpace]

Yes that is pretty much the correct line, though

Spoiler

because you drew just 2 rounds of trumps, we might have to make another safety play (which we cannot avoid and is automatic) to draw the last trump. For some reason I prefer to draw 3 rounds of trumps.

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