In Round 8 one hand resulted in swings all over the place:

Board 4. Dealer West. All Vul.
	ª 7 4 © K Q 5 2 ¨ A Q 6 3 § 10 3 2
ª 10 © A 7 6 ¨ K 10 9 5 2 § J 9 6 5		ª A 3 © J 10 9 8 4 3 ¨ 8 4 § 8 7 4
	ª K Q J 9 8 6 5 2 © - ¨ J 7 § A K Q

The simple problem for North/South is to reach Six Spades.
We know at least one International who considered the South hand to be worth an opening bid of Four Spades after three passes.

One less fortunate pair heard their opponents bid:

West	North	East	South
Pass	Pass	Pass	2¨*
Pass	2©*	Pass	3ª
Pass	4NT*	Pass	5ª*
Pass	6ª	All Pass

There is no reason why this should not have been off two cashing aces, but South's heart void was an undeserved bonus for North.

This was a better effort:

West	North	East	South
	Gunev		Popova
Pass	1¨*	Pass	1ª
Pass	1NT	Pass	2©*
Pass	2ª	Pass	5©*
Pass	5NT	Pass	6ª
All Pass

Two Hearts was a transfer to spades, setting the suit, and Five Hearts was (we think) Exclusion Blackwood. An excellent practical shot that led to the top spot.