Law 25B1: Between 25A and 31

When does the right (25B1) to accept an intended change of call cease?

The bidding

W      N     E       S
2NT    P     3T(a)   P    (a) Puppet-Stayman
3NT*  p(1)                (*) Meant to show 5 hearts.

Now West remembers that he has to bid 3H to show his hearts and replaces
his bid. North wants to accept this change; he is wants to bid 3S.


If 3NT had been unintended, we are in law 25A, 3S is an allowed bid.
p(1) is cancelled and becomes UI to E/W.
Especially we have 25A1, telling us that a replacement is allowed as
long partner did not  bid, and we 25A6, telling us how to deal with
p(1): it may be withdrawn.


If 3H  is meant to be an intended bid that should be given in the next
round,  we are in 31 (and 27). Again N is allowed to bid 3S, but this
time p(1) is not cancelled and it is AI to E/W.

But now we are somewhere between 25B1, 25B2 and 31.
31.C tells us, that a bid OOR shall be treated as a change of call,
according to law 25 as long as LHO did not call.

25B1. is telling us, that a substition may be accepted; unfortunately it
does not tell when this right is ceasing.
Did North forfeit his right to accept a change of call, when he called
p(1) over 3NT, throwing us do 25B2, or is acceptance according to 25B1
still possible?




-- 
Volker Walther
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