Entry-shifting squeeze

In the card game contract bridge, an Entry-shifting squeeze is a mixture between a material squeeze[?] and an immaterial squeeze[?]. The material part is the same as in a trump squeeze[?] or a squeeze without the count. The immaterial part is that depending on the choice of discards of the squeezee an entry into one or into the other hand is created. For that very reason an entry-shifting squeeze is always a positional squeeze[?].

   (1)                   -
                         K 6 
                         -
              -          A 5         J 5
              A 4                    3
              K 9                    -
              -          -           8
                         -
                         Q 2
                         J 2

In the first diagram clubs are trumps and South could claim all tricks on a cross-ruff[?] were it not for the trump in East's hand.When the club jack is played the entry-shifting squeeze comes to his rescue. If West sheds a heart the jack is overtaken with the ace, a heart ruffed and North is left with the last trump and a master heart. If West choices to discard a diamond, the club jack is underplayed with the five. North's club ace ruffs the diamonds good and the South hand wins the last two tricks.

The entry-shifting mechanism works also in No Trumps, as can be seen in the next example.

   (2)                     A 8 6 4
                           -
                           K J
              K Q 7        -         5 3
              K Q 5                  9 8 3
              -                      -
              -            2         3
                           A J 10
                           A Q
                           -

As we have only four tricks this is a squeeze without the count. It is not possible to rectify the count as there are not enough communications between the two hands. The entry-shifting mechanism will overcome this though. South leds the diamond ace and West has no good discard. If he discards a spade, the jack of diamonds is played and South continues with a spade to the ace and the spade eight. West returns a heart to South's ace, but the diamond king serves as an entry to the established spades. If West chooses to discard a heart the diamond king is played and after ace of hearts and another heart the diamond queen will serve as an entry. There is an interesting variation about this ending. If East guards only the third round of one of the menace suits the suqeeze does not work, givent that he as an outside winner too. If the heart nine and the heart ten were interchanged in the above diagram best defense can always restrict South to his four top tricks. West discards a heart honor on the diamond ace. Now East can gain the trick that has to be lost in that suit and cash his side winner.