This is aHand:

You reach 4♥ after opening 1♥ and deciding to advance to game over partner's invitation. This is a marginal call with a 13-point hand, a 2∙6∙2∙3 pattern and some wasted values (those Jacks look really worthless to us).

A count of losers shows that we have too many (one Spade, two Diamonds and a Club). A count of winners brings little cheer as we don't have enough (one Spade, six Hearts and two Clubs). Nine winners, four losers. At least the arithmetic balances.

So what should we do? Cash nine tricks and give up? No, of course not and you should focus here on Clubs. Why? Because this is another classic frozen suit. We have two tricks in it by right but see what happens if either opponent were to lead the suit. His partner would have to play his honor and that would create a finesse position, allowing us to take three tricks.

So, to make 4♥ we have to eliminate the other suits and force an opponent on lead. We are aided in this process by West who starts off with three rounds of Diamonds. You can't blame him for this defense but a Spade switch at trick two would have been a killer. Can you see why?

Anyway, we ruff the third Diamond, draw trumps ending on table and ruff the last Diamond. Ruffing in the long hand gains us no tricks per se but it does eliminate the suit from dummy as well as the closed hand. Now we play off the ♠A and another Spade and Throw the Bums on Lead.

What can the defense do (except weep)? A further Spade lead would be a ruff-and-sluff, allowing you to sluff a Club while ruffing in the other hand. As it is, East chooses to win the Spade and lead a Club. Well, you just need split honors now. You play low from hand, West inserts the ♣J so you win the ♣K on table. Now you can play a Club and finesse the ♣9. When that wins you are home and dry. Opening up Clubs is fatal for East and West but your play gives them little choice.