This hand is from the world championships held in Bali last September, where Italy won the Bermuda Bowl, defeating China in the quarterfinals.

When Chuangcheng Ju declared three no-trump, Antonio Sementa led the diamond king. Dummy’s ace won, as East showed an even number of diamonds. At trick two West captured the club king with his ace.

West could see that cashing his diamonds would give South his ninth trick, so he shifted deviously to his low spade. When declarer finessed, the roof fell in. Giorgio Duboin took the trick and returned a diamond, letting Sementa cash out for down two.

In the other room East had responded two spades at his first turn — weak and natural. Again, the defenders led a top diamond, won the club ace, and shifted to a spade (this time the 10) at trick three.

Norberto Bocchi now knew to win the spade ace and run all his club winners. When the last club was played, East could discard a spade safely enough, and South could shed another diamond. But what was West to do? If he threw a heart, declarer would play the heart ace to drop the king. If he threw a diamond, declarer could play the spade jack and take two more tricks with the heart ace and spade queen. And if West threw his spade, declarer could exit with his diamond, end-playing West to cash his diamonds, but then to lead a heart away from his king at trick 12.

The Venice Cup is the world championships for women, and in Bali last year it was won by the Americans, who narrowly defeated the English in the final. Today's deal comes from England's victory in the semifinals against another of the world's powerhouse women's teams, the Chinese. In today's deal, though, the Chinese came off best, with Yan Li at the helm in a delicate no-trump game.

Susan Stockdale led the heart nine, to the two, 10 and queen. Things didn’t look that good for declarer, since a lot had to be done to be able to scramble nine tricks together.

At trick two Yan made the natural play of the diamond jack, which went to the king, ace and seven. Yan’s key play came at the next trick when she led a club to the nine and East’s jack.

Stockdale now shifted to a spade and Yan won the trick with her king. The club queen followed, and when that wasn’t covered and the 10 appeared from East, declarer was able to repeat the finesse in clubs. She ended up scoring one spade, two hearts and three tricks in each minor. This technique in the club suit is called an intra-finesse, and involves finessing against a doubleton honor, then pinning it on the next turn.

Incidentally, had West won the first club and returned the suit, declarer would have cashed her club and diamond winners, then endplayed West with the fourth diamond to lead spades for her.

In today's deal from the Bermuda Bowl semifinals in Bali, John Kranyak for USA-I declared four hearts. West led the spade queen and declarer won in dummy and played the club jack next. East took the ace, and instead of playing a spade to ensure the defeat of the contract, exited with the club two. Declarer ruffed and ran the heart jack to East's queen. The diamond return went to dummy's jack and declarer unblocked the heart ace, played a spade to the jack, followed by the heart 10. East won, but declarer could claime the balance — he had his 10 tricks.

In the other room Claudio Nunes took the spade lead, cashed the heart ace, then continued with a second round. East took the king and switched to a diamond. East was now threatening to underlead his clubs and get a diamond ruff. However, declarer won the diamond with dummy’s queen, played a spade to the jack, overtook the spade 10 with the king, and played the spade six, on which he discarded the club six from his hand – a classic example of the Scissors Coup. With the link to his partner cut off, East could now take only his master trump.

At double-dummy, though, an initial diamond lead defeats the contract. Declarer does best to win, cashes the major-suit aces, then continues with three more spades, throwing the club as before. East can win the spade and force declarer with clubs at every turn to establish a third trump trick.

Today's deal was played in three no-trump or in six diamonds at every table. Whatever contract was attempted came home in some comfort — since if North played three no-trump on a heart lead, he would take the spade finesse as his extra chance before going after the ninth trick that he needed from the club suit. Of course had he played on clubs before spades, he would have risked going down as the cards lay.

The play in six diamonds followed a curiously similar general pattern. West led a heart and declarer tried an early club to the king and ace. Now South knew he needed a discard from dummy to take care of the losing club, so he also led a spade to the jack. When the finesse succeeded, he had a straightforward route to 12 tricks.

Only one East-West pair went plus; here is how they did it (on the auction shown).

Mike Passell as West did very well to stay out of the auction. (Had he overcalled one heart, East would have shown a pre-emptive raise in that suit, and declarer would have known to take the spade finesse rather than play on clubs.)

Against six diamonds Passell selected the heart lead, which gave declarer nothing. Declarer, Jerzy Russyan, won the heart and led a club to his king, smoothly ducked by Passell, persuading declarer to draw trumps and lead a second club toward his hand. Down one!

In the quarter-finals of the world championships, the US and Canadian teams met up, in an elimination match. In a see-saw match, the US pulled away at the end, to win comfortably.

Both tables played four spades here, and ,against the Canadian declarer, Bobby Levin led the diamond king, ducked by declarer. A second diamond went to dummy’s ace, and Daniel Korbel pulled trumps in three rounds before taking the heart finesse. Now the club jack went to the eight, three and queen.

Korbel ruffed the diamond return, then played a low club from hand, Levin playing the ace. Had Korbel unblocked the club 10 from dummy, he would still have had a chance to make the contract. (He could guess to enter dummy with the heart ace and play a low club to his seven.) However, with the blocking club 10 still in dummy, declarer had no chance after ruffing the diamond return with his last trump. He cashed the club king and had to concede one down.

In the other room West also led the diamond king, ducked, and continued the suit. The American declarer, Kevin Bathurst, won and played the spade 10, then a spade to the jack, before judging very well to advance a low club from hand. West could do no better than win the club queen and cash the club ace before continuing with the diamond queen. The ruff-sluff allowed Bathurst to discard a low heart from hand and claim his 10 tricks.

Last month we looked at some deals that had cropped up in the early stages of the world championships in Bali in September 2013. This week's deals all occurred toward the end of the championships.

The first deal exemplifies the concept that defensive signaling cannot be reduced to a simple question of attitude — whether you like or do not like partner’s lead. A thoughtful defender will signal by reference to the whole hand and what partner is likely to switch to if given the chance.

Today’s deal comes from the last qualifying match of the Senior round-robin with Netherlands needing a big win to qualify, which they duly managed to do. This board helped their cause.

In one room, where Bep Vriend was declarer, West led a top diamond against four hearts, and East contributed the jack, suggesting a sequence but denying the queen. West naturally switched to a heart, and now the contract came home. Vriend won the queen, cashed the ace and queen of trumps and pitched a diamond from dummy on the third heart. West’s defense was unsuccessful but well-reasoned, since if East had the heart king rather than the jack, this is exactly how he would have defended, and the heart shift would have been mandatory.

In the other room, Chris Niemeijer led a high diamond as well, and when Louk Verhees Senior signaled encouragement, West continued diamonds. Now four hearts had to go one down, losing one further trick in each black suit.

One of the top players in England is David Gold, for many years director of teaching at St John's Wood Bridge Club. Today's deal shows him in top form on a deal from a home international match against Wales.

West’s two-no-trump opening showed both minors and made it difficult for the English pair to reach four spades, but the bidding was more than helpful in the play.

West led the club king, followed by the ace, East showing three cards in the suit. West then switched to the spade five, and declarer went up with dummy’s ace, cashed the diamond ace and king, discarding spades, then ruffed a diamond to hand. Now he ruffed a club and ruffed a diamond, East discarding a spade.

He next crossed to the heart ace and played dummy’s last diamond. To prevent declarer from scoring another small ruff (which would have given him three plain winners and seven trump tricks), East ruffed in with the heart jack. Declarer overruffed with the queen, and had to decide what West’s last two cards were. It seems to me that he played the odds when he exited with a spade.

When West followed suit, Gold knew that West was marked with precisely two spades and five cards in each minor, thus only one heart, which he had produced under dummy’s ace. Accordingly, in the two-card ending, with declarer holding the K-8 of trumps, when East led back a low heart from his 9-7, Gold could be completely confident in taking the finesse.

The hallmark of a well-constructed problem is that it resembles the sort of deal you face in real life. If you were to look at today's deal and remark with raised eyebrows, that the blockage in the heart suit and the lack of entries to dummy in the trump suit seem rather artificial, I would be hard-pressed to argue with you. But that is not the point. Having reached six spades, and having found dummy with a tantalizing collection of goodies that appear to be just out of reach, how are you going to make best use of its assets?

Let’s assume you win the diamond lead and play the trump ace, West showing out and discarding a diamond. If West holds the club king, you can draw the last trump, cash the heart ace, and play a diamond, forcing West to give you an entry to dummy with a club, heart, or diamond.

However, East is surely the favorite to hold the club king because of the theory of Vacant Spaces, which tells you that West has six cards outside of diamonds and spades, while East has 10 such spaces.

If you believe, as I do, that West would be equally likely to open a three-diamond pre-empt with or without the club king, then the way home from here is to cash the heart ace and exit with the trump five. As the cards lie, East is forced to bring dummy back to life and allow you to make 12 tricks.

At one table in a team game West elected to lead a low diamond against three no-trump. East's eight forced the jack, and declarer now guessed to play on spades by leading low to the nine. East won the trick to return a diamond, and declarer took the trick, then ran off the spades while discarding a diamond and a heart from hand as East pitched a club. When he led a heart from dummy toward his hand, East ducked. Declarer took his heart jack and ace and his diamond winner, and East was then thrown in with a heart to give declarer his ninth trick in clubs.

Since no lead appeared to give the defenders a sure set, East was philosophical about the whole thing. However, when they came to score up, his teammates announced ‘Lose 13 IMPs’.

When East wondered whether the swing had been the result of a superior choice of opening lead, South confirmed that West had led a fourth highest spade three. South had put in the nine -and East had ducked! Declarer led a heart to his jack, then played ace and another heart, and East won his queen to shift to the diamond nine. South went up with the ace, cleared the hearts, then took the next diamond with the king and cashed his long heart. East nonchalantly discarded his small spade, so can you really blame declarer for playing a spade to the jack now?

East won his queen, and played yet another diamond, and the defenders had six tricks.