[blml] concession

[Tim West-Meads]

Ton wrote:
> 
> Do I have to believe that somebody is trying to tell us that L68B2 
> only applies for a defender who concedes all remaining tricks? 

Not me.  L68b2 applies if:
a) Defender concedes all the tricks.
b) Defender concedes a number of tricks THEREBY claiming the remainder.
(Because in this latter case the cancelling of a concession causes the
"thereby claim" to cease to exist following the principle of the WBF 2001
minute.

L68D applies if:
c) Defender explicitly claims and concedes a specific number of tricks.
d) Defender claims a number of tricks thereby conceding the remainder
(There is no provision under either L68b2 or the WBF minute to cancel
such a claim).

Play may continue only if there is *neither* claim nor concession so it
is necessary that *both* be cancelled if we are not to apply L68D.

Tim