I chose to bid 5NT and partner called 6Heart Graphic. I was trying for GSF, but I was not sure about his call. Partner thought he was using Exclusion Blackwood. It is amazing how much ambiguity can set in when one agrees to play certain conventions. At least I knew that he would not bid 5Club Graphic without spade support.

I called 6 Spade Graphic. Partner passed, LHO led a Club Graphic and partner tabled the following hand:

Spade Graphic K x, Heart Graphic A K Q 9 x x Diamond Graphic K Q 9 x x Club Graphic —-.

I ruffed, of course, and played trumps. Although they split 4-1, RHO had the ten, so we made 6 Spade Graphic.

7Heart Graphic depends upon a 4-3 heart split. The Heart Graphic 10 is a big card.

At the other table, they wandered into 6Diamond Graphic. The opponents were strong players and I am sure their auction was a difficult one. We won three imps, part of a 5-0 margin and enough to hang on to win the swiss.