Monday, April 5, 2010

Platinum Pairs 1st Final Board 1

If you want a problem, consider how you'd play 4♥ by West on a low spade lead. Or, cover up South/West and defend as North (read to "What should North do here? then decide).

Board 1
Dlr North
Vul None

♠ Q 9 8 6 3
♥ 9 3
♦ A 9 6
♣ K 9 2
♠ 7 ♠ A K 5
♥ A Q J 10 8 7 ♥ 6 5
♦ J 8 4 2 ♦ 10 5
♣ A 3♣ Q J 10 8 7 5
♠ J 10 4 2
♥ K 4 2
♦ K Q 7 3
♣ 6 4


Franco

Andy

West North East South
Pass 1♣Pass
1♥1♠Pass3♠
4♥All Pass

Lead: ♠3

[Reasoning withheld for under the fold for those reading as a defense problem] I won, pitched a club on a 2nd spade and led a low diamond from dummy.

South won ♦Q and led a heart. I won the Queen and led another diamond to North's Ace.

What should North do here?

In practice, he led a heart. I was able to win, draw trumps, and lead the ♦J to pin the nine.

420 was good enough for 14/17 matchpoints.




My reasoning: I figured South likely holds at least one top diamond honor and obviously a spade honor, plus I basically need him to hold a heart honor.  Given the preemptive raise, they also know to strand club winners in dummy if I set those up. At IMPs it might be harder not to take a club hook which seems like it has more legitimate ways to make. At matchpoints, I think my line offers some misdefense chances and otherwise has a decent chance of maximizing tricks in a poor contract.  I suppose technically I make if there's Kx onside in trumps plus a natural diamond trick (e.g. HH9 tight with South). 

As for what North should do: I have no entry for a heart finesse. Anything but a heart would have been successful.

3 comments:

  1. Are you saying that without the interference you would have taken the club hook?

    ReplyDelete
  2. Yes, for two reasons: I wouldn't have the inference about the plausibility of both kings onside; and, if it lost, the defense wouldn't know dummy was dead.

    ReplyDelete
  3. I ask because few people would ever consider this a loss associated with the overcall. Of course, as you say, the defense is less likely to know that dummy is dead if they had done no bidding. I do not mean to suggest that the whole charge should go to the overcall, just that some of it should.

    ReplyDelete