<< Not So Impure ♣♦ Par Zero Deals ♥♠ Two en passant Coups >>

# A Subtle Promotion

 ♠ A K ♥ A 8 7 4 2 ♦ 10 8 4 ♣ 10 7 2
 ♠ Q 7 6 ♥ 9 6 5 ♦ 6 3 ♣ A Q J 8 5

 ♠ 8 3 2 ♥ Q 10 3 ♦ A K Q 7 2 ♣ 9 6
 ♠ J 10 9 5 4 ♥ K J ♦ J 9 5 ♣ K 4 3

### Notrump

In notrump, each side can run at least seven top tricks. East/West can take 10 tricks by leading a diamond to the ace, club finesse, run four diamonds, then finesse clubs again and run clubs. North/South get seven tricks by leading a spade to the king, heart finesse, heart king, another spade, and then running three good hearts.

Against a spade contract, East/West must get a spade, so they simply take their six top tricks in the minors.

### Hearts

Against a heart contract, East/West start the same way - diamond, club finesse, two diamonds, club finesse, club ace, then a fourth club. East ruffs high with the queen (or 10) and this promotes West's 9.

### Diamonds

If East/West declare in diamonds, the defense takes two top spades, finesses in hearts, cashes the K, ruffs a spade, cashes the A, and finishes up with a fourth round of hearts, promoting South's J.

### Clubs

The trickiest case is when East/West declare clubs.
North/South take their two spades, three hearts, and a spade ruff as before. On the third round of hearts, South pitches a diamond, and, when North leads a fourth round of hearts, South pitches a diamond again at this position:
 ♠ — ♥ 8 7 ♦ 10 8 4 ♣ 10 7
 ♠ — ♥ — ♦ 6 3 ♣ A Q J 8 5

 ♠ — ♥ — ♦ A K Q 7 2 ♣ 9 6
 ♠ J 10 ♥ — ♦ J 9 ♣ K 4 2
What should East/West do? If they ruff in East, they can only finesse once in trumps. But if East pitches a diamond and ruff with the West hand, they only have one entry to dummy, since South can ruff a second diamond entry, so again they can only finesse in clubs once.
 << Not So Impure Thomas Andrews (bridge@thomasoandrews.com), © 1999-2014. Two en passant Coups >>
Article formatted with BridgeML.