Double squeezes are a combination of two simple squeezes carried out against both opponents. If both squeezes are executed by the very same trick, that is the same squeeze card, the double squeeze is called simultaneous. If both opponents are squeezed on different tricks (the squeeze card is then a card in the suit that was menacing the opponent squeezed firs) the double squeeze is called non-simultaneous.
As there are only four suits in contract bridge the two simple squeezes can only be combined by using a menace for both opponents, the squeeze card being in the fourth suit.
The following diagram demonstrates the basics of a double squeeze.
A 2
K
-
Q 3 - K 9
A -
- Q
- 6 -
-
J
2
When the two of clubs is played, West has to keep his ace of hearts (menaced by dummy's king) and gives up his spade guard (spades being the double menace).
In the same trick (this is therefore a simultaneous double squeeze), East is squeezed in the pointed suits.The following two links will demonstrate the basic matrices of the simultaneous double squeeze and the non-simultaneous double squeeze