I received the 6 of Spade lead, which I ducked in dummy, RHO playing the 8 and I won the Ace. I led a Diamond to the ten, and RHO won, played a spade to LHO's King and the Jack of Spades back, won in dummy pitching a small heart from my hand, I now ran all my diamonds, and the position with 1 diamond to go from my hand, was:
When I play my last diamond from my hand, LHO can pitch whatever he wants, but RHO is stuck. He can be squeezed, or he can create a squeeze on his partner. If he pitches a club, my 9C sets up. If he pitches a heart, it at first doesn't seem so bad, after all, he still has the club guard. But when I now cash all my clubs, LHO can bare himself down to the Ten of Spades and the KQ of Hearts, but on my last high club, LHO is squeezed also. If he pitches his spade, my 9 is good in dummy, if he pitches a heart, because his partner was squeezed into letting go of a heart, dummy's 9 of Hearts is now good. Squeezes are so much fun!