Your partner's dummy play should be none of your concern. (It's best not to watch; let your brain rest.) But the phrase "It's none of my concern" invariably seems to be followed by . . . "but .t. . "
After East's timid pass to 5 hearts, South tried dummy's jack on the first diamond, and East's queen covered. South won, drew trumps and led another diamond. When West discarded, South had no chance; he lost a diamond and two clubs.
"It's none of my business . . .," North began.
"Correct," snapped South; and the rest was a stony silence.
We can make it our business though. How would you play the hand?
Since West's diamond lead is a sure singleton, South must play low from dummy and take the king. He ruffs a spade, draws trumps, ruffs a spade, takes the ace of clubs and exits with a club.
The defenders get two clubs; but then if East leads a diamond, South gets a free finesse; and if instead either defender leads a black card, South discards a diamond as dummy ruffs.
You hold: A 9 4 3 2 Q 10 9 8 6 K J 10. Dealer, at your left, opens one heart, and your partner and the next player pass. What do you say?
A: Double. Since you have only ten points in high cards, you might not double in the direct position (though some experts would); but after two passes, you shouldn't let the opponents buy the deal without a fight. Your partner must realize you may have shaded values.
Neither side vulnerable
Q 9 8 7 5 4
A J 5 2
7 4 3
K Q J 10 7 6 2
Q 9 8 5
A 9 4 3
Q 10 9 8 6
K J 10
A K J 10 6
K 7 4
A 6 2
South West North East
1 4 5 All Pass
Opening lead -- 3