Grand Bidding

If Argentina had made a better start to the tournament they would have been challenging for a place in the semi-finals as their form improved dramatically towards the end. They put on an excellent display against Thailand on VuGraph.
This was one of several major swings in their direction:

Session 15. Board 19. Dealer South. E/W Vul.   ª A J © A K 10 7 5 4 ¨ Q 5 3 § A 7 ª K 9 8 5 4 © 8 3 ¨ J 6 § Q J 10 3 ª 10 7 3 2 © J 9 6 ¨ 7 4 2 § 8 5 4   ª Q 6 © Q 2 ¨ A K 10 9 8 § K 9 6 2

Open Room
West	North	East	South
Madala	Chitngamkusol	Ravenna	Trimankha
			1¨
Pass	1©	Pass	2§
Pass	2ª	Pass	2NT
Pass	3©	Pass	4©
Pass	4NT	Pass	5¨
Pass	6©	All Pass

It is not easy to reach a grand slam on the North/South cards and the commentators did not anticipate a swing.

Closed Room
West	North	East	South
Sasibut	Juchimowicz	Limsinsopon	Pellegrini
			1NT
Pass	2¨	Pass	2©
Pass	3¨	Pass	4¨
Pass	4NT	Pass	5ª
Dbl	5NT	Pass	6§
Dbl	7©	All Pass

South's choice of opening bid, 1NT with a 2-2-5-4 was endorsed by Gabriel Chagas as the doubleton major suit queens are a potential asset in that denomination if South is declarer.
West attempted to put his opponents off with a couple of doubles but North was not to be denied. +1510 and 11 IMPs that helped Argentina to a an excellent 24-6VP victory over the high flying team from Thailand.