An agricultural auction landed me in 6NT. With the spades breaking, the only testing lead is a heart (else I can establish four spade tricks by losing a spade trick). I misguessed at trick one, or there would be no story. When the Queen was covered by the King, I rectified the count for a possible squeeze by ducking
When E continued hearts, I won, and worked on a double squeeze with the following threat cards H7, CJ, and the third round spade. I had to watch the discards for H8,T,J, CQ and there were guard squeeze possibilities. Indeed, after I cashed C AK, pitching spades, and ran a few diamonds, the first key end position was this, with East having to choose from three evils. If he blanks his SQ, I play a spade to King and pick up the J on a finesse. He cannot let go a Club or dummy's J promotes into a twelfth trick. He chose to be squeezed out of HIS heart guard. On the same trick, I let go the now useless CJ, and his partner was simple squeezed in hearts and spades
Notice that at trick two, East can break up the doubly guarded suit entry by shifting to a low spade, not a easy shift to find.
I shared this deal with my bridge partner, who looked me up and down, and said, the play was not bad, but next time do bid TWO CLUBS and you may get to the laydown SEVEN DIAMONDS. What are partners for?