First look at it:
First jumbled thoughts:
WE have 2S, 4C ,3D,1H. I am inclined to place East with the Q H or a Singleton A.
If East has Qxx(x) easy make on a club H squeeze.
Now, problem is to tackle East with Qx H, not the club Heart squeeze ( take all D end in dummy) does not really work.
This one has an easy solution, play a club to dummy(find the break) play a small H, if East follows Q, you're home. If East follows small, finessse 10 and home again.(On a squeeze if neccessary)
Now, let's see if we can cope with East having a singleton Ace Heart. He'll show out at trick 5. Take the K and we can place East with a (2-1-4-6 hand with fair confidence, looking at the S play to first 2 tricks). Now, no matter what I try I cannot get home. Looking back, nothing i do at trick 4 will help. so we cannot make if East is 2-1-4-6.
If East has singleton Ace H , i think there is no way to make your contract.
So, after some sorting out:
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Final play:
Win Spade Ace, play club to Ace. ( West shows out)
Small H from dummy.
If East follows small, play the 10. claiming on a squeeze.
If East follows Q, you have 12 tricks.
It East shows out, give up.
T1. ♠6 Q 9 5
T2. ♥4 A 3 2
T3. ♠4 A 3 Q