Bali 2013: The Round 7 Slams

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In all the world championships between the boards of one of the rounds you can find several slams. Some are very hard to find, although there is always some team that reach them and receive a beautiful double digit swing in reward. The Round 7 of the RR that was played on Thursday, September 19th contained 25% of slam boards. Look what happened in the Open Championship:

Board 1

Board 1. Dealer North. None Vulnerable.
  K Q T
K Q 8 7 5
7 3
A K 2
9 5 3
T 9 4 2
8
Q 9 8 5 3
  J
A J 6 3
K Q T 9 5 4
J 4
  A 8 7 6 4 2

A J 6 2
T 7 6
 

 Only a few arrived to the N/S 6 slam.

 They were: Indonesia, Italy, Canada y Egypt, all of them scored 12 IMPs.

 Perhaps a void in partner’s opening suit worked as a break for many players.

 All the rest played 4…only one 3NT.

     

Board 2

Board 2. Dealer East. N-S Vulnerable.
  A Q 7
7
K Q 7 3 2
Q 7 6 4
9 6 3
9 4
A 9 4
T 9 5 3 2
  J T 5 4
K Q 8 6 5 3
8
J 8
  K 8 2
A J T 2
J T 6 5
A K
 

In this board, 13 of the 22 N/S played a diamond slam.

The rest stayed in 3NT.

From the results it appears that the old problem: Minor vs NT still is not completely solved today.

South opened or mentions NT after a weak opening bid by East.

     

Board 7

Board 7. Dealer South. All Vulnerable.
  A K 7 6 5
7
A T 6 4
A 6 5
T 8 3
K Q 8 3
Q 5 3
K T 2
  4
J T 4
J 7 2
J 9 8 7 4 3
  Q J 9 2
A 9 6 5 2
K 9 8
Q
 

In this board, 12 of the 22 N/S played the spade slam.

It seems that some players throw in the towel too early when they are void in partner’s opening suit.

     

Board13

Board 13. Dealer North. All Vulnerable.
  T 9 7 3
J 8 7 2
Q 7 2
7 3
Q 2
K T 9
9 5
A K 9 5 4 2
  K 6 5 4
A 6 4
A K 8 6
Q J
  A J 8
Q 5 3
J T 4 3
T 8 6
 

 Only 4 E/W arried to the club slam: Indonesia, Brasil, Italia and USA2.

 Here again appeared the old problem: Minor vs NT

 After East’s 1NT opening bid, West transfered to club, expecting his partner answer: I like clubs vs I dont like clubs.

 The ones who received a positive answer, arrived to slam, those who received a negative answer played 3NT.

 The question is, why some players decided that Q J was enough for a positive answer and others decided that Q J wasnt enough?