Forcing defense

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A forcing defense in contract bridge aims to force declarer to repeatedly ruff the defenders' leads. If this can be done often enough, declarer eventually runs out of trumps and may lose control of the hand. A forcing defense is therefore applicable only to contracts played in a trump suit.

The defense should try to make declarer ruff in the long trump hand. Unless declarer is playing for a dummy reversal, he usually intends to ruff losers in the short trump hand anyway. If the defense can shorten declarer's trumps sufficiently, it may wind up with more trumps than declarer. In that case, the defense will be able to pull any remaining trumps and run its own winners.

A forcing defense is usually begun on the opening lead because the tempo is often important. It is indicated when:

The latter requirement means that the forcing defense is seldom attempted against voluntarily bid slams: the declaring side normally has so much strength that the defense's opportunities to continue to attack the trump suit are very limited.

Example

Alfred Sheinwold [1] cites this example of a forcing defense to South's contract of 4:

South in 4765
1084
A765
KQ6
A432

N

W               E

S

KQJ976532
832K4
J8A107532
Lead: KKQJ1098
A
QJ109
94

West leads the K. South takes the A and plans to win five spades, one heart, at least three diamonds and a club. He leads the K, West ducks, and East's club discard discloses the bad trump break.

South has no better move than to continue spades, hoping for a defensive error, a winning diamond finesse, or that the hearts block. West ducks his A once again, though, and South now tries the diamond finesse. East wins the K and forces South with another heart. South ruffs and leads a club to the A. East leads another heart and again South has to ruff.

By now, South is down to two trumps and West still has two, including the A. When South leads another trump, West takes the A and a heart lead forces out South's last trump. At the end, West will make his small trump, winning in all two spades, a diamond and a club.

Notice what happens if South continues trumps at trick 4. West takes his A and continues hearts, forcing South to ruff. South has now lost control of the hand. No matter how South continues, the defense continues to force South with heart leads after taking the K and the A, again winning two spades, a diamond and a club, or a trick in each suit.

Notice also that West must wait for the third round of spades to take his A, after which dummy is out of trumps. If he takes his A on either the first or second round of trumps, South can play on the minor suits and ruff a fourth round of hearts in dummy. This would let South preserve trump control, draw West's small trumps, and hold E-W to one trump trick only.

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Beer card

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In contract bridge, avoidance play is a play technique whereby declarer prevents a particular defender from winning the trick, so as to eschew a dangerous lead from that hand. The dangerous hand is usually the one who is able to finesse through declarer's honors, to give a ruff to the partner or to cash one or more established winners. Avoidance play can be regarded as one type of safety play.

Backwash squeeze is a rare squeeze which involves squeezing an opponent which lies behind declarer's menace. A variation of this, known as the "Sydney Squeeze" or "Seres Squeeze", was discovered in play at a rubber bridge game in Sydney, Australia in 1965, by the Australian great Tim Seres; it was later attested by famous bridge theorist Géza Ottlik in an article in The Bridge World in 1974, as well as in his famous book Adventures in Card Play, co-authored with Hugh Kelsey.

In the card game of bridge, tempo is the timing advantage of being on lead, thus being first to initiate one's play strategy to develop tricks for one's side. Tempo also refers to the speed of play and more generally the rhythm of play over several tricks.

An entry squeeze is a move inn contract bridge

A knockout squeeze is a squeeze in three suits, one of which is the trump suit. The defender's trump holding is needed to prevent declarer from making a successful play involving trumps, including one as prosaic as ruffing a loser. Because the knockout squeeze does not threaten to promote declarer's trumps to winners it is termed a non-material squeeze. Other non-material squeezes include entry squeezes, single-suit squeezes and winkles.

References

  1. Sheinwold, Alfred (1964). 5 Weeks to Winning Bridge (Third ed.). New York: Pocket Books. pp.  394–396. ISBN   0-671-42287-1.