barmar, on 2016-January-17, 20:55, said:
It's still the same revoke. The impact of the error doesn't equate to how "well" you have to play.
This is not the same as planning a different defense based on the contract (you have to defend differently to beat 6NT versus 7NT).
I fully agree here. On the other hand, it does not seem to be right to me to punish the revoke by 20IMP instead of 1 because the opponents reached illegally a contract. This is only my opinion only, but still:
Your final result in an event is a score assigned to your performance. In IMP, you start with zero and you are "punished" for mistakes and you are "rewarded" for good performance on each board. Each mistake has some price assigned to it. Not bidding a game has a high price, giving an overtrick has a low price. The revoke has a variable price, depending on the contract. The question here is if you allow an illegal action to change this price of a mistake for the NOS. You obviously think it should be allowed, end of story. I would be more in favor of some middle ground. I fully agree that a revoke in a clinch is more serious than in a boring contract. Thus, I fully agree that the price should be higher for a revoke that gives the 13th trick, even in an illegally reach 7NT. I just do not happen to think it should be the same "penalty" you assign to a revoke in a legally reached 7NT. I may be too much of a mathematician but I would prefer to have the same expectation value (price) assigned to a mistake on each board. This is not possible, of course, but I would like to get as close as possible.
This is obviously a can of worms: Kaplan is right, the connection between the revoke the the illegal 7NT is broken. You can not ignore the revoke and there must be a penalty. Full agreement on this one. On the other hand, the -20IMP is the effect of the illegal 7NT and the revoke, combined. There are two, unrelated events that contribute. The connection between the two events is broken. The connection between the damage and the two mistakes (illegal 7NT and revoke) is clearly not. The effect should still be split somehow between the two. I know this is not easily achieved...
I think we said everything that could be said. We should just agree to disagree. I see your point, I accept it, I would just prefer to live in a different word. Since 2017 is coming, this is the right time to do this...