Untitle IV

If East/West declare notrump, the defense starts with a heart. If East ducks the heart, North/South set up four clubs, and have a heart, a spade, a diamond and four clubs. So East must win.

Attacking diamonds is useless, because East has no entry - South just wins the first diamond and sets up clubs.

So East must attack spades. North wins the first spade, takes a high heart, then attacks clubs. West can win and take four spades, but those are his last tricks. North/South get a spade, a heart, a diamond and four clubs.

If North/South declare notrump, the defense is much the same, with the suits reversed - East/West attack diamonds, and South must win, or East/West shift to spades, setting up four spade tricks, plus a trick in each suit.

If South attacks clubs, West wins the second, then shifts to the ♠ K. If North ducks, West leads a heart to East's ace and East takes four diamonds for a total of seven tricks. So North must win the spade, but now is stuck with no entry to the good clubs, and the heart suit un-established.

So, after winning the first trick, South could lead only one club, then shift to hearts. East wins, cashes one diamond (West pitching a club) and exits a spade: If North ducks or wins, it doesn't matter, he has only two heart tricks along with his earlier diamond ace and club.

If North/South declare spades, East/West start with spades until North wins. The best North can do is win the second spade.