Last night I was playing in an ACBL Speedball IMP pairs game. We were unable to complete Board 12 on time. I thought it was clear that the opponents' 3NT contract would fail by one trick. We were in the process of playing to trick 5 when the round ended.
I was very surprised to see that the director awarded the opponents 3NT making. I tried to contact the director to say that the result was wrong, but I received no response and the score was not changed.
I would appreciate it if you could look at the hand diagram and let me know if you agree or disagree that the result should have been 3NT -1. You can follow the play to the first four tricks by hitting "Next" in the hand diagram.
Note: (1) North's 3♣ bid was made under the mistaken idea that his partner's 2NT bid was "unusual."
(2) EW were playing UDCA.
(3) The lead to trick 5 was the ♣7.