Over the last four years, an elite annual bridge tournament for women has been organized in Beijing. The Hua Yuan Cup is for eight national women’s teams, and today’s deal comes from the main event.

Poland’s Justyna Zmuda had the opportunity to find a sparkling defense after an unusual sequence. While the jump in a minor suit opened on your left can be played as natural, typically a jump bid in the suit the opponents have opened asks your partner to bid three no-trump with a guard in that suit. The call is usually based on a long, solid minor suit, plus guards in at least one of the other two suits.

On lead against three no-trump, Zmuda started with the spade ace in order to get a look at dummy. East followed with the spade five, and South with the three. The auction showed that South had started with a spade stopper — probably queen-third or queen-fourth.

Zmuda took heed of East’s five and decided that unless East had started with the doubleton 5-4, it was consistent with a suit-preference signal for diamonds, the lower of the red suits. And since she needed less from her partner in diamonds than she did in hearts, she made the killing switch to the diamond jack, though today the diamond king would have worked equally well. (That would not have been the case if partner had held the doubleton A-9 or A-10.)

The defenders could now cash five diamonds and two spades for three down.

Today’s deal, based on a recent Common Game deal with the club honors slightly altered, sees East use a defensive technique that everyone should know. It may seem obvious when you see the point, but at the table, the intermediate player who was faced with the problem did not see the solution.

North used Stayman, then settled in three no-trump when he did not uncover a four-card spade suit opposite. West led a top diamond; declarer won and passed the spade jack. East won cheaply and shifted to a low heart. When declarer guessed correctly to play low, it forced the king, and declarer now had nine tricks without breaking a sweat.

Notice the difference if East shifts to the heart 10. Whether South ducks or covers, the defenders will be in position to run the hearts when they regain the lead with the spade ace.

This concept of leading a high card to squash a doubleton or tripleton spot-card in dummy has more than one variation. (The play would work equally well if the heart two were in dummy rather than in East’s hand.) It may be right for East to shift to the jack from A-J-9 or K-J-9 if there were a doubleton or guarded 10 in dummy, for example. When declarer has queen-third, this will allow the defenders to run the suit on defense.

Of course, in our example hand against a good defender, maybe you should assume East is more likely to have the K-Q than Q-10 or K-10 when he shifts to a low card!

Today’s deal is a theme that dates back to an early Culbertson match — though it was not untypical that a deal played by one of Culbertson’s opponents was attributed in print to Ely himself!

East may be best advised to pass on the first round, though as a passed hand, it would also be reasonable to double for take-out. However, when the call of two clubs comes around to him, he should reopen the bidding with a take-out double. It would be practical for South to re-compete to three clubs, in the hope of preventing his opponents from getting together. West should not take any part in the auction now, since his partner did not double on the first round and must therefore be limited in shape or high cards, or both.

A red-suit lead would defeat the contract, but when West leads a low spade, it gives declarer some extra chances. He follows with the seven from dummy, and when East contributes the king, South can see that he surely has to lose one spade, one heart, two diamonds and at least one club. His only chance of avoiding one of these losers is to pick up a second trick in spades by throwing his queen under the king and subsequently taking a finesse against the jack. When the finesse succeeds, a diamond can be discarded on the spade ace, and the lie of the trumps is such that with the lead coming from dummy, whether declarer finesses the queen or the 10, only one club trick should be lost.

Today’s deal cropped up in the mixed pairs event at last year’s European Open. Against three no-trump, West led the heart 10; when East overtook it with the jack, declarer Alfredo Versace won the king, unblocked the diamond queen, crossed to dummy with a club and cashed the diamond ace. The bad break was a blow, but Versace cashed a third top diamond (East pitching a club), and then played dummy’s spade queen, covered by the king — ducking would have worked no better — and ace.

Declarer now played two more rounds of clubs, putting West on lead. She could cash a second club and had two winning jacks, but then had to surrender two tricks either to South or dummy.

In hindsight, East should have kept all his clubs, so that he can win the third round of clubs. However, suppose East pitches two spades on dummy’s top diamonds? If West retains the diamond J-9, declarer plays the spade queen as before, and after that exits with the spade 10, pinning East’s nine.

Now if West cashes the diamond jack and exits with the nine, declarer follows with dummy’s eight, and West must surrender three tricks. West can counter this in unlikely fashion by unblocking the diamond nine earlier on, so that dummy can be thrown in with the diamond six.

The simplest defense is for East to pitch a spade and a heart on the diamonds. Then East covers the spade queen, and now West lets East win the third club or spade; the defenders take the rest.

At the European Open Championships last year, Cedric Lorenzini played six spades on the lead of a low heart to the 10, East’s queen and a low ruff. He played three rounds of diamonds, ruffed a heart to hand, took the spade ace and led a fourth diamond. West ruffed in, and that was fatal. (Pitching a heart now, and again on the fifth diamond, is better. Declarer ruffs a club to dummy and advances the heart king, which East must duck to set the slam).

As it was, declarer overruffed and led the heart king to pin the jack. West ruffed the fifth diamond, but declarer could discard dummy’s club loser and ruff one club in dummy, pitching the other on the established heart nine.

At trick five, declarer does better to lead the heart king. When East covers with the ace, South ruffs with the queen or jack. Next, he cashes the spade ace and follows with the fourth diamond, giving West a choice of poisons.

If he ruffs low, South overruffs in dummy, ruffs a heart back to hand and plays the last diamond, pitching a club from dummy. South can arrange to cash the club ace, ruff a club and discard a club on the established heart nine.

If West ruffs high to return the spade eight (the best play), declarer wins dummy’s 10 and ruffs out the heart jack. Finally, if West pitches a club or the heart jack, South throws a club from dummy and leads the fifth diamond. Declarer now either scores his trumps separately or sets up the heart nine, if necessary.

Today’s deal from the 2017 European Open Championships shows various declarers at work in a slam. You play six spades (after partner uses Blackwood while showing a club void) on the lead of the diamond three. Let’s have a look at what happened to a variety of careless declarers.

At the first table, declarer received the lead of the diamond three and immediately turned his attention to the trump suit by winning in dummy and calling for the spade 10. That card held the trick, and declarer repeated the finesse. West won this time and played back a club, rather than finding the killing defense of returning a third spade. 12 tricks claimed.

At a second table, West did find the play of a third trump. Declarer won in hand and ruffed a club to set up his 12th trick, but stood no chance to get back to his hand to pull that last trump! One down.

It would have been better when East discarded on the second round of trumps to go up with the ace, ruff a club and play a spade to the eight or jack. It then doesn’t matter when West wins his spade king — he is endplayed since he has the heart queen and is forced to help declarer get back to his hand.

This is vastly inferior to the correct line, however, which is embarrassingly easy — though apparently few declarers found it. Run the diamond lead to your hand and ruff a club, then finesse in spades. Nothing can go wrong unless the cards are so hostile that you are booked for defeat no matter what you do.

On this deal from the 2017 European Open Championships, the bulletin remarked that just because the double-dummy analysis (a computer program called Deep Finesse) tells you something, that doesn’t mean it is “true.” The program tells you what should happen on best play; but how often do you encounter that?

For example, Jovanka Smederevac declared four spades doubled on this deal, where the analysts had indicated that nine tricks were the limit — but no one told declarer!

Smederevac, playing with Matilda Poplilov, received a diamond lead; East won and cashed her heart king, then continued with the heart jack. Smederevac ruffed, led a club to the king, which was ducked, and led a club back. East took her ace but shifted to a low diamond, which turned out to be fatal. Smederevac won her queen, took the spade king, ruffed a diamond to dummy, and cashed the third club to pitch a diamond.

She had reached a four-card ending where dummy had the spade ace, a losing heart and two club winners, while East had three spades and the diamond ace, and South the Q-J-6 of spades and a losing diamond.

When declarer led a club from dummy, East could ruff in with the seven, but declarer could over-ruff, ruff a diamond to dummy, and be in position for the trump coup.

East had needed to notice that declarer has only nine tricks: five spades and four clubs. If you play a trump at every turn, declarer can take diamond ruffs, but in turn you can kill her club tricks by ruffing in.

The European Open Championships at Montecatini Terme, Italy, in June last year featured a week of mixed pairs and teams events. Because it is an open tournament, players come from all around the world, and squads or partnerships can consist of mixed nationalities.

David Berkowitz of the U.S. was playing with his wife Lisa, with teammates Jan and Aida Jansma from the Netherlands, and David was full of praise for his teammates’ effort on defense here.

Both rooms played four hearts, and both defenders in the West seat led their singleton club, but Lisa Berkowitz brought home 10 tricks easily enough in the closed room. Here is what happened at our featured table, though.

Declarer won the club lead in hand and ruffed a diamond, East giving count in the process. Declarer next led the heart queen, and Aida ducked this to Jan, who put the spade king on the table! Declarer was forced to try to cash two spades immediately to pitch his club loser. Next, he led a third spade from dummy, and East took the opportunity to ruff high as declarer discarded a club. But that let East give her partner the club ruff to set the hand.

Note that if East covers the first trump, this defense will not work. Similarly, if West shifts to a diamond or a low spade when in with the heart ace, declarer can win in hand and lead a second trump, preventing the defenders from taking their trumps separately.

The European Open Championships allow anyone to enter, and cross-national partnerships and teams are permitted.

Last year the championship was held in Montecatini Terme, Italy, and all this week’s deals come from that event. Today’s deal features a clash between Norwegian and Austrian squads. This was a nice auction to a sensible spot.

In the other room, Terje Aa passed the West hand after a strong club to his right, then bid up to four spades on his own. Since South had shown both his suits, North was persuaded to bid on to five hearts over four spades. Unluckily for his partnership, while declarer does not appear to need the club finesse in that contract, repeated spade leads promoted the heart nine into the setting trick, so five hearts went quietly one down.

At our featured table, South appeared to have found himself in a contract where there was no home for the club loser, but things did not work out that way. Declarer in five diamonds doubled, Petter Tondel, won the spade ace and ruffed a spade, overtook a trump to dummy to ruff a spade, then drew the last trump and took a heart finesse of the jack.

If Andreas Babsch, West, cashed the queen and ace, he would then have to open up clubs, so he won his heart ace and returned the queen, hoping his partner had the jack. (Of course, declarer would have then ducked the second heart.) Whatever he did, declarer had 11 tricks and 12 IMPs.