But suppose the doubler is himself on lead,and knows it.

One theory is that the double calls for a short suit lead since the doubler must have length somewhere.

That is convenient when the doubler's partner has the hand shown in the diagram.

Any other bid that doubler's partner makes is natural.

The doubler's partner hardly ever passes, but this was one of the rare exceptions.

The doubler is supposed to make a descriptive bid.

Normally the doubler has a void and is hoping partner will lead this suit.

By passing, the doubler's partner is promising at least three trump tricks.

Many described H' Doubler as a philosopher, scientist and artist.

A second is that the doubler has two tricks to cash, which is not entirely safe.

The original doubler has the first right.

In the mid-1990s, a Doubler square was added to the game board which doubled whatever dollar amount was next picked.

Amber was also designed to work without expensive field memory as a simple scan doubler, but has not been marketed that way.

The doubler is supposed to lead a trump, so that the opponent's trumps can be drawn.

A line doubler is a device used to deinterlace video signals prior to display.

Installation of the final magnet into the Energy Doubler, March 1983.

(Taking the absolute value and low-pass-filtering is a known way to make a frequency doubler.

Informing the doubler of his impending death, both parties struggle to learn as much as they can.

Through a developed computer translator, the crew and the doubler can speak to one another and begin to gain an understanding of the other's species.

Optional lenses are available for focal doubler or for wide angle.

He has recorded on numerous albums and studio sessions as a woodwind doubler.

In a famous deal played two years ago, an opponent escaped to the seven-level, and the doubler's partner did not know what to lead.

It is relatively easy when just one suit has been bid by the defending side - the doubler wants that suit led.

West's double was an attempt to suggest a lead, but such actions are unwise unless the doubler has considerable solidity.

Theory therefore indicates that the double should be a diversion - the doubler wants his partner to lead his own suit.