[blml] Revoke then adjust to different contract [SEC=UNOFFICIAL]

[ton kooijman]

I think that the code of practise asks for another approach. 

Let us take teams and the result at the other table is 3S + 1.

For the offending side their score is adjusted to 3S + ?? 

The code of practise is not clear about the ??. There are two possibilities:

+ 1, with the argument that playing in 3S might have avoided the revoke ( 0
IMP)
+ 2, the offending side made 11 tricks. (1 IMP)

This argument of having played differently is not so clear when a revoke has
occurred but certainly could be valid in normal play, trying for the down
trick. I used 'normal', which shows the approach to follow I think. As long
as the play went within the range of 'normal' as defined in the laws it
should be accepted and the loss of an extra trick should be compensated. 

For the non offending side the damage caused by the revoke is subsequent,
the damage caused by the 4S bid is consequent damage and should be
compensated. 

We played board 1, non-vulnerable.
The actual result is +170 - 450 ( - 7 imps) 
The consequent damage is based on +170 - 420  (- 6 imps). So the adjusted
score for the offending side is - 1 imp. 

Vulnerable there would not have been a difference in this case. 

In a pairs event the difference could be big. 

Let us take the frequencies:
5 times + 170 (4 mp) 6 times + 420 (15 mp) and this score of + 450 (22 mp). 
For the offenders either + 170 (5 mp) or + 200 (10 mp) 

The non-offenders: actually they have a 0 (zero). With normal play they
would have received 6 mp for 7 bottom scores of  - 420. There is no
compensation for this loss of 6 mp. But there is for the difference between 
the expected result without an infraction (17 mp) and the normal result
after the infraction ( 6 mp). So this pair receives 11 mp.  

Leaves us with the question what score all other pairs should receive. For
pairs compared with the offending side (I mean NS or EW) just add  170 or
200 and calculate the mp. For the pairs compared with the non-offending side
I would add - 200 and then calculate the mp. 

ton (it is easy to make mistakes, so waiting for your critical remarks)