[r-t] Asymmetric Doubles

[Leigh Simpson]

Cairngorm McWomble:
> I seem to recall reading an old book on doubles which stated something
> along the lines of
> 
> pn 1 = omit
> pn 123 = single
> pn 145 = bob
> pn 125 = extreme

The 1980 Doubles collection states:

For the methods in the first group a "standard call" is one which alters
only the places made while the treble leads. There are four possibilities:
no places other than that of the treble (called an omit), places made in 123
(a single), places made in 125 (an extreme), or places made in 145 (a bob).
Since one of these possibilities will be used at the plain lead, none of the
177 methods has a choice of more than three of these for its calls, while in
practice some (such as Plain Bob) will have only two to choose from.

I suspect the new doubles collection (forthcoming) will take a similar line.
After all, it's tricky to decide what else to do for the lead end...

Leigh