1. If you elected to declare because you counted your available tricks and expect to take six trumps in hand, the two high hearts plus two heart ruffs in dummy, do not continue reading until you have coped with the defense where East overtakes the ËA, then continues the suit.
2. Okay, now you have noticed that you can’t ruff the third diamond in dummy, since East will overruff and return a trump to leave you a trick short. But you’ve worked out that you can discard a club at Trick 3, and East will be pinched in a funny way; if he throws a club, you still get your heart ruffs. And if he throws a heart, you need only one heart ruff to set up a winning heart spot in your hand for the 10th trick. But do not read further until you decide what to do as declarer if East pitches a heart, and West leads a fourth round of diamonds!
3. Yeah, that’s not so good; you can now ruff in dummy, and if East overruffs you can also overruff in your hand - but what do you do when instead East pitches a second heart, thereby preventing you from any heart ruffs in dummy? Don't go further until you counter this defense, or until you decide to switch your backing to the defenders.
4. OK; if you turn coat and are now backing the defense, do not read further until you have considered all the possibilities when declarer puts pressure on West.
5. When you as declarer have ruffed the fourth round of diamonds in dummy and pitched a heart from hand when East discards a heart, you simply draw trump ... and keep on playing trump until you have just two left. The five-card end position is this:
Ì
AK
Ê
KJ9
Ì Q106
Ê A10
Í 54
Ì 985
When you play your fifth trump, West has no answer: he can pitch a heart and watch you cash dummy’s hearts and ruff yourself back to hand to win Trick 13 with the last heart. Or he can pitch the Ê10 and watch you lead a heart to dummy, ruff away his ÊA and then lead a heart back to dummy to enjoy the ÊK! Either way, his hand is toast, and a rare ruffing squeeze has won the day!.