Let’s analyze this match between Russia team and Lavazza team.
A swing has been produced by the hand number 6. The world class players Zia and Duboin reach a very aggressive final contract of 3NT. To be honest the weak jump of North helped to force Zia to take a decision. Now the problem of Russian couple is to defeat it. After the ♥ lead and the duck from West, South has to plan the defense. From the prosecution it looks clear that South thought that North had a club entry (A or K) and so continued with ♥ . Unfortunately, this gave time to Zia all the time to promote both diamond and clubs.
Even it looks like that it was South to take the wrong decision, in my humble opinion the discard of ♥ 2 convinced South to continue ♥ . If North probably discards ♥ 6 or 9 South will have to think to an alternative to reach 5 tricks for the defense and probably will continue with a ♠ !
The lesson from this hand is that every card you play is important when you are defending and sometimes mistakes are just due to wrong or lazy discard by the partner.
Another big swing occurred on the board number 5 where the contract of 7♥ was played in the open room. There is not much to say about the play since the contract depends on ♠ finesse that is working.
Also this contract is a product of a very aggressive bidding by the opponents. As you can see the 6♣ bid by Duboin is forcing South to bid without knowing if the partner has ♠KQ. I think that Duboin was relaying on the 1♠ opening bid to consider his ♠ K as the key card to defeat the great slam.
In the closed room, North and South bid in the silence and when they realized that the great slam was below 75% chance they stopped to 6♥
Let’s close the analysis of this match with the board number 12. Again pre-empt bidding plays a great role in the final contract. In the Open Room East and West are silent.
In my opinion it’s questionable the pass by North on the 2♥ , because they are vulnerable and the end was worthy a 3♥ or 2NT bid where South would have for sure raised to the game.
In this case the fun occurred in the closed room. West open the bidding with 2♠ and East raised to 3♠ Now it’s very difficult for South to bid when vulnerable. Actually I cannot really believe that Bilde really bid 4♥ with that hand. Really a casino bidding with a lot of chance of getting back a double by East and pay between 500 and 1100 (that is what happens if I bid like this!).
Now the problem is on East, because when you preempt you should have a plan, in case the opponents is bidding: you should double or do a sacrifice bidding. Anyway West hand was really bad especially regarding suit consistency.