If you're going to sacrifice, it usually pays to do it early.
This hand is a good example.
Scoring: Matchpoints (Pairs)
Hand #27
Dlr
S
Vul
E/W
98653
108543
1085
A104
J
Q73
KQJ854
KQJ7
KQ
A9
109762
2
A9862
KJ642
A3
West
North
East
South
1
2
5
6
All Pass
BIDDING: The auction
started calmly enough but then North leaped to 5.
He saw the favorable vulnerability and wanted to make E-W guess at the
five level. Sure enough, East held such a good hand he took the
plunge. South thought about doubling but it wasn't certain they
could beat the small slam.
PLAY: North led a heart
and the contract was soon down one. West can discard a diamond on
the fourth spade and another on dummy's heart honor. It takes a
diamond lead to beat it two tricks. North's bid paid off because
if East doubles instead of bidding the slam, N-S are only down two for
-300. That beats all of the E-W pairs who bid and make 5.
If North had only bid 4, East still might have bid six but
would probably stop at five. When you're going to preempt, make
the opponents guess at the highest level you're willing to bid and do
it immediately.