Tuesday, October 18, 2005 10:23 PM
The Art of Sacrificing
PITBULLS:
Sacrificing
is an art rather than just a
Bridge skill. Beginning Bridge players sacrifice too much in IMPS giving the
opponents a “fielders choice” of doubling rather than take their iffy games. In
fact , a tactic by good players is to deliberately bid close games vulnerable
against non vulnerable bidding opponents to induce a pseudo sacrifice. Pseudo
sacrifices are a very bad Bridge result .
There
is an analytical side to sacrificing. Taking the vulnerability into
consideration , there is simple arithmetic
to do. You are not vul against vul and it is certain that they will make their
game you have 500 to “play with” . In fact for the tactical advantage of making
them bid again at the 5 level and possibly go down , you have 800 to play with
. 800-650=150 is not an IMPS disaster as it is in matchpoints. Equal vulnerable sacrifices are more rare but
still possible. Quite often the decision is straight arithmetic. How many
tricks does the auction dictate that we will take on defense against what we
take on offense ? The law of total tricks helps on these decisions. Add up your
total trump that your side holds and if it adds up to 10 , go for the 10 trick
game. Tom Gandolfo had a sacrificing decision against the Barton team recently.
Q109xxx xx Axx Axx Tom opens 1♠ nv against nv and LHO doubles and partner bids 3♠ which shows 4 spades but not much else. They bid 4♥ so now what ? Law of total tricks says you have 10 trump
so offensive action is encouraged.
Does partner have two defensive tricks required to beat the hand ? Almost
impossible on the bidding so bidding 4♠ is an easy decision. Even if you have miscalculated
badly , this is IMPS and not matchpoints
so –500 is not a horrible loss.
500-420=80 is not many IMPS. Turns out you go for –100 against their 420 for an
excellent Bridge result.
There
are tools of the trade to prevent bad sacrificing and those are forcing passes
and D.S.I.P. double theory. If the opponents own the hand , a pass of their contract is a “green light”
to suggest a sacrifice. Tom had a recent difficult situation in a sacrifice
situation. The vul opponents against nv opened 1NT and Tom doubles with x QJx AQxx AQJxx and they make a punitive redouble. It is standard
expert agreement to play 2♣ as a scramble in these situations. It means we do
not have a 5 card suit or longer and not enough HCP’s to justify passing so
lets scramble to our fit. If we do bid a suit , it must be 5 cards or longer and of course no values. Anyway I bid 2♦ and the opening NT bidder shows 5 spades by bidding
2♠. The
doubler’s hand has now grown on this particular auction. In support of diamonds
, it is huge as the opponents are
bidding your stiff spade. You now
bid 3 spades which shows your diamonds and your spade shortness . The vul
opponents bid a confident 4♠
and now its my decision . xxx 10xx J1098x 10x
. Partner has short spades and 16 HCP’s behind the 1NT bidder .
Partner must have 4 defensive tricks outside the spade suit to beat 4 spades
which is not likely. 5♦ will not
get severely punished. In fact , if I could get to my hand , 5♦x goes for –100 against their +620. The key bid was anticipating that they might bid a vul 4♠ game by bidding spades to show your diamond fit and
short spades to partner.
D.S.I.P.
doubles were designed to prevent
pseudo sacrifices. If you want to sacrifice or bid again with defense , you ask partners permission with a double .
The auction goes 1♥-1♠-2♥-2♠ 4♥-P-P-? and you hold Kxx x Axxxx xxxx and with the opponents vul and you not a
sacrifice might be a good idea. So you double saying you would like to bid but
to cover the bases I also have defense. Partner has KQJxx Q109x xx Qx and converts your double for +500 . You go at least one down and probably
two down in 4 spades ! The 1st double opposite a passing partner is
D.S.I.P. in competitive auctions . Say for example , the spade overcaller
wanted to bid 4♠
with defense. She would double and the other hand with their trump can convert.
No pseudo sacrifices with D.S.I.P. theory !!