Opening lead: spade 2
North's artificial response to the opening club bid showed two controls. From the fact that he held three kings, South knew that this must be one ace. Therefore, it was certain that his side was missing two aces and the king of diamonds and it was entirely possible that one or both of the black queens would prove troublesome also.
This knowledge made Forquet's pass to three diamonds the correct strategy. But the Swedes didn't have all this information. When they held the North-South cards in the other room, Lundell opened with a spade, jumped to three diamonds over Wohlin's no-trump response, and after Wohlin raised to four diamonds, he carried on to game.