Lightner double
Encyclopedia
Lightner double is conventional double in bridge
used for directing the opening lead against slam contracts. It was devised by Theodore Lightner.
The Lightner double is always performed by the (to-be)dummy's LHO, directing the partner to choose an unusual opening lead. The opening lead is often a crucial trick in a deal, and it can be the last chance for the defenders to collect needed tricks. The doubler will most often have a void in a side suit, or sometimes AQ or KQ in the suit bid by the dummy. The partner is expected to find the correct lead, which might be unusual from his viewpoint; in any case, he should not lead a trump. The most common interpretation is to lead the first bid suit (other than trumps) of the opponents.
Contract bridge
Contract bridge, usually known simply as bridge, is a trick-taking card game using a standard deck of 52 playing cards played by four players in two competing partnerships with partners sitting opposite each other around a small table...
used for directing the opening lead against slam contracts. It was devised by Theodore Lightner.
The Lightner double is always performed by the (to-be)dummy's LHO, directing the partner to choose an unusual opening lead. The opening lead is often a crucial trick in a deal, and it can be the last chance for the defenders to collect needed tricks. The doubler will most often have a void in a side suit, or sometimes AQ or KQ in the suit bid by the dummy. The partner is expected to find the correct lead, which might be unusual from his viewpoint; in any case, he should not lead a trump. The most common interpretation is to lead the first bid suit (other than trumps) of the opponents.