A surefire counterplan

Author: Larry Cohen
Date of publish: 10/01/2023
Level: Intermediate to Advanced

For the third month in a row (more to come), we visit this year's Senior Team Trials. Everyone (the deals were the same in all matches) opened 1NT and played in 4♠ after a Texas Transfer.

Vul:None
Dlr: South
♠ KQ10832
♥ 2
♦ A1076
♣ 95
 
♠ 974
♥ K653
♦ 92
♣ K1083
  ♠ 65
♥ Q987
♦ KQJ5
♣ J76
  ♠ AJ
♥ AJ104
♦ 843
♣ AQ42
 

What should happen on West's ♠9 lead? Although several declarers failed, this one should be made. As usual, we count losers. From the long trump hand (dummy in this case). If the ♠K is offside (as it is), that's one loser there. If diamonds aren't 3-3 (they aren't) that's 3 more losers. So, the contract is in jeopardy.

Declarer should start by winning the ♠A and playing another diamond. If the defense doesn't find a trump switch, it will be easy. Declarer could win a heart or club (eschewing the finesse) return and play a third diamond, later trumping the 4th diamond in hand.

But East should have none of this. After winning the ♠J at trick two, he should play a trump, taken by declarer's ♠A. Now what?

Declarer still has a surefire counterplan. Do you see it? Simply win the ♠A at trick three and play a third diamond. If they are 3-3, no problem. If East wins and plays a heart or club, win the ace, ruff a heart in dummy and trump the last diamond. So, when East wins the third diamond, he has to play a second trump (won in dummy) to leave: 

Vul:None
Dlr: South
♠ Q1083
♥ 2
♦ 10
♣ 95
 
♠ 9
♥ K65
♦ --
♣ K1083
  ♠ --
♥ Q987
♦ K
♣ J76
  ♠ --
♥ AJ104
♦ --
♣ AQ42
 

Declarer draws the last trump and plays a heart from dummy, intending to put in the 10. If East happens to have both the ♠K and ♠Q, no problem. East would have to play one of them and declarer could win the ace and play the jack to throw dummy's last diamond. East wins, but declarer has a good heart for dummy's potential club loser. If West wins the ♠10 with the king, he is endplayed. He has to play either a heart into the ♠AJ or a club into the ♠AQ. Either way, declarer has 10 tricks.