[blml] Double and appeal

[Gampas at aol.com]

In a message dated 02/12/2007 14:06:14 GMT Standard Time,  
guthrie at ntlworld.com writes:

[Torsten Åstrand]
2 4H =
1 4Hx =
1 4H -1
2 3H =
1 3H  +1
1 4S -1
1 3S -2
1 3S =
Playing IMPS

[nige1]
Thank you  Torsten. Not particularly conclusive but these results 
demonstrate that (in  practice rather than theory) 9 tricks in spades 
is a possibility.
 
[Lamford] Yes, it would appear that the correct adjustment should be to a  
weighted score, 67% of 3S = and 33% of 3S -1 (I think we always reject 3S - 2,  
as the declarer can make 8 tricks on normal play).