### Double Dummy Problem

```A Double Dummy Problem from the Bridge Forum
October 10, 1991

Contract: 6 Hearts

AK543
65
AJT
K54
9               JT876
7               432
K98765          Q4
QT876           A32
Q2
AKQJT98
32
J9

The solution is to run 5 heart tricks, pitching 2 diamonds and a club
from dummy, play 3 spades, pitching a club from your hand, and ruff a

3
-
A
K5
-               J
-               -
K9              Q
QT              A3
-
8
32
J

East must keep a spade and at least two clubs (it doesn't matter if he
keeps 3 clubs instead of 2 and the queen of diamonds).  If east only
keeps one club, we can throw him in with the ace of clubs and set up
dummy's king for our twelfth trick, ruffing the spade return if need be.
West must keep 2 clubs else we'll set up dummy's 5 of clubs by playing
to the King (dummy's 5 beats east's 3).  West must also keep 2 diamonds
else we'll play the ace of diamonds, ruff the spade, and our last
diamond is good.

We then play a diamond to dummy and ruff the last spade.  West is now
sqeezed.  With west yet to discard, the situation is

-
-
-
K5
-               -
-               -
K               -
QT              A3
-
-
2
J

If west pitches a diamond, our 2 is good.  If a club, we play the jack
to the king and we take one of the last two club tricks.```