I needed 12 tricks but there were only 10 available, I tried playing diamonds for 3-3 to get the 11th and couldn't see any viable way to get the 12th. The diamonds weren't 3-3 and I got down 2, but the field made 6NT. I lost 15 IMPs.
Board 8
I wanted to drive the ♦A out first, then use the ♠A as the entry to run it. As you can see, I played ♦ two times but the A didn't come out, so I started to try other suits to gain entries, but I failed to do so, and the defenders didn't play to the dummy. The A only came out when I exhausted all the entries.
Other tables all got overtricks and I lost 10.8 IMPs.
Can anyone explain to me what I did wrong?