BBO 4/3

lol I am so bad

Opponents have the auction 2H 3NT

Partner leads the D2

-----------A65
-----------JTxxxx
-----------J76
-----------K
------------------------KJx
------------------------Qxx
------------------------KTx
------------------------Axxx

D2, small from dummy, I stick in the T, declarer wins the Q.
Now plays the HA and a club to dummy.
I win the CA and return... the SK!

Even if declarer has the SQ, my lead of the SK kills the entry to dummy's heart suit. Of course, this actually leads to an overtrick...

A65
JTxxxx
J76
K

QTx
AKx
Qxx
QJTx

Declarer can now take 3 clubs, 1 diamond, 2 hearts, and 2 spades is 8. A winning spade or heart finesse will be 9. If I had just cashed out the diamonds, declarer can only ever come to 8 tricks (because the heart suit remains blocked.) In my feeble defense, I didn't know if we led 2nd or 4th from four bad holding (even though I probably did know.)

Declarer went wrong and we got it back anyway.