Lead: ♥J

I played a hand similar to the above in a BBO day-long just declare free tourney in which one declares supplied contracts. My claim at trick one scored 59.7% across 130 tables.

Update: I hope the link below will work. I also show the actual hand. I actually scored 60.53% with 34/160 scoring 12 tricks. Unfortunately, I can't (don't know how?) show the link to my personal results, which shows all plays for that board. As Kit below guessed, some ducked the lead while some won and immediately claimed 12(!) tricks and some won the lead, unblocked KQ tight to claim... 12 tricks. I guess that humans are at clear disadvantage at counting to 13.

https://webutil.bridgebase.com/v2/daylong_hands.php?tourney=ARDARD%3Ab5deef59.cab7.11e8.85b0.0cc47a39aeb4-1538975101-&username=fuzzyquack&board=INSTANCE-T3054956-R1-B7-I60