Deep Finesse is now free

Maybe I'm a long way behind the curve with this one. But I have just noticed that if you visit the front page of the Deep Finesse website that their excellent double-dummy analysis software is now totally free. It's probably been free for years now, but the last time I looked it wasn't so I've been using other bits of software around for a while like Bridgify.

Safety play?

Here's a Tollemache (teams) declarer play problem. East is dealer and Passes. You quickly reach 4 after a 1NT opener (12-14), Stayman, 2 and 4. What's the best way to secure the contract on a Jack of Diamonds lead?

East Dealer

Both Vuln.

North (Declarer)

A Q 10 9

A 8 5 2

4 2

Q J 7

West

K 6 5 2

Q 9

K J 10 6

10 8 4

East

8

10 6 3

Q 9 8 5 3

A 9 5 2

South

J 7 4 3

K J 7 4

A 7

K 6 3