Every week, the oddest things happen at the bridge table. This collection
is devoted to exploring a specific sort of oddity - the six-card fit.
Specifically, it will discuss the cases when the six-card fit is the
best place to play, double-dummy.
For example, in this grand slam:
K J 5
A K J 9 8 3
A K J 10
10 7 6
Q 8 5 4
9 8 4 2
8 4 3 2
K 10 9
Q 7 5
7 6 5
A Q 9
A J 7 6 3 2
North/South have a lot of playing strength, but the only grand slam
which makes is in clubs. On a club lead, North wins, cashes
the ♦ A-K
, ruffs a diamond with the
, re-enters North's hand in spades
to draw trumps and claim.
Most of the examples that follow are significantly more complicated than
this, of course.
As with my collection of Double
this collection used a combination of two programs
to find interesting examples:
my own flexible dealer.
a double dummy solver written by Matt Ginsberg.
- More recently (as of May, 2008,) I've added Bo Haglund's double dummy solver to Deal, so I no longer need the GIB double dummy solver.
Actually, I didn't use GIB directly; instead, I used Ginsberg's library of
about 720,000 deals, including double dummy results. Ginsberg generated
those results using GIB, however.
Six-card fits are the double-dummy par result about once out of every
210 deals - they are not that rare.
As with the previous collection, I did a considerable amount of
sifting by hand, finding the more interesting examples, altering holdings
to make the examples cleaner.
Thanks to Richard Pavlicek for pointing out some oversights on my
part. Richard has a deal
on his site
where the only making game is in an awful 5-card suit.
As usual, I encourage feedback, particularly if you find errors in
analysis, but even if I've left in typos or bad grammar. I'm a bad
copy editor :-)