Backwash squeeze

Backwash squeeze is a rare squeeze which involves squeezing an opponent which lies behind declarer's menace. It was first 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.

By nature, backwash squeeze is a non-material trump squeeze without the count. It occurs when the declarer (or dummy) has high trump(s) but must not draw opponent's remaining trump(s). Instead, he ruffs a card high, and the opponent playing after, still having trump(s), must choose to under-ruff or give up one of menaces, either in form of a direct trick or an exit card, allowing later endplay. Since the squeeze may be without the count, the squeezed defender might take a later trick.

Example: Backwash without the count

BridgeHand
KJ|32|A5|-
854|-|KJ|5
-|Q|10942|J
A7|-|Q83|9Spades are trumps, and South needs five of the six remaining tricks, the last trick having been taken by dummy. The material for those is theoretically there by means of DiamsA and crossruffing, but West's Spades8 is in the way, as he can overruff declarer's Spades7 if he tries to ruff hearts. However, West also protects diamonds, and can be thrown-in with that trump if the correct position is set up. The declarer now ruffs a heart with trump Ace (establishing the suit), and West is backwash-squeezed. As he must not unguard diamonds, and under-ruffing will allow the declarer to draw trumps with dummy's KJ, he discards a club—his exit card. Now, the declarer draws trumps and plays now high heart from dummy; when West ruffs, he has only diamonds left and must give up a trick in the suit.

Example: Backwash with the count

BridgeHand
9|J|-|10
75|7|-|-
J|Q|-|7
-|-|106|9This example projects the backwash squeeze into its smallest compass. Clubs are trump, but if South pulls East's last trump he will be stuck in dummy with two losers. So South ruffs a diamond with the Clubs10, and East is caught in the backwash of the ruff:

* If East underruffs, South ruffs himself back to hand and cashes his last diamond.
* If East discards, that promotes a winner in dummy, which South cashes, ready to overruff on either the next-to-last or on the last trick.

Notice that there is no traditional two-card menace. Instead, the Clubs9 and the Diams10 serve the function of a two-card menace. The reason that two-card menaces help simple squeezes function is that one card is used as an entry and the other as a threat to take a trick. In this backwash squeeze, the Clubs9 functions as the entry and the Diams10 as the threat.

Also notice that the "U" in Clyde Love's BLUE acronym, standing for "Upper," is missing in this example. There is usually at least one card that threatens to be promoted to winner status lying over the squeezed hand. But here these two cards, the Spades9 and the HeartsJ, both lie under the squeezed hand. Ottlik says that this aspect of the position suggests the term "backwash."

External links

* [http://www.bridgeguys.com/Squeeze/BackwashSqueeze.html BridgeGuys article]