Missing 3 Aces and having no voids in either hand, 12 tricks scores us 100%.  This was just such bad luck for our opponents.  Lead of a ♦ and they take trick one with the A but this is Dummy's singleton - unsure what to play next as she doesn't want to lead A or away from an A and doesn't find the correct ♣ switch so plays a trump.  I win in dummy and play a small ♥ to my singleton K, this wins and now I draw trumps, ending in Dummy and play Q♥ (only the A left and the others are now the same value).  A comes up and I ruff.  Back to Dummy with a trump and play the last 4 ♥s to discard all my ♣ - 12 tricks made.  Not playing the A♥ ended up costing 2 tricks this time.