It may seem unlikely that a series of world titles could have been decided by a single hand, and even more so if that hand came from a game of rubber bridge. However that is the way it was told by Carl-Alberto Perroux, the Italian non-playing captain of the all-conquering Blue Team from the fifties and sixties.

He was sitting North when this hand was played in a high stakes rubber. The bidding may look a little antiquated, but on the lead of the spade three declarer, the then relatively unknown Camillo Pabis-Ticci set about the play in confident style. He won the ace, drew a round of trump, then cross-ruffed the minor-suits. After taking two club ruffs in hand and two diamond ruffs in dummy he had reached a six-card ending with the lead in North. Dummy consisted of four losing spades, a trump and the club king, while he had two spades and four trump in hand.

At this point Pabis-Ticci led the club king and discarded a spade from hand, forcing West to win and concede a ruff and discard, so both spades went away from the South hand.

Not the most difficult play in the world perhaps, but Perroux was very impressed with the way that his partner had played the hand. When Avarelli was temporarily unavailable to play with the Blue Team, Perroux (who had complete control of the team selection) brought in Pabis-Ticci, for the start of a glittering International career over the next two decades.

The South hand has enough slam potential for it to be right to open two clubs, and after the temporizing response of two diamonds, North can bid two no-trumps to show scattered values, (using three clubs as a second negative) then raise three spades to four. He might consider cuebidding four clubs with the ace instead of the king, or better trumps.

After the club queen is led to the ace, declarer cashes the spade ace to find the bad news. Next he plays a low spade from hand. East takes the spade jack with his queen and tempts declarer by shifting to the heart two. If declarer finesses, a heart return will sink him, leaving him with two diamond losers at the end. But South has a sure trick play if he is careful. He rises with the heart ace, rather than finessing, then draws trump (throwing clubs from the table) and exits with the heart jack.

If this holds, he has 10 tricks. If it loses, the defenders must give him a 10th trick one way or another. A heart or club is clearly fatal, and leads to his making an overtrick. Equally, though, if they touch diamonds, declarer makes his 10th in that suit, since he can hold his losers to just one trick there.

This play would almost certainly be right even if South did not have the heart jack – East would have exited with a trump rather than lead away from the heart king, would he not?

In today's deal West led the heart six against three no-trump. After winning with the king, East returned the jack, and declarer worked out that if the lead was a genuine fourth highest, there was no prospect of blocking the suit. So he did well to let the jack win, and was delighted when East switched to a spade. But South was so pleased at having guessed right that he took his eye off the ball, in what appeared to have become an easy contact. He tried the minor suits in succession by cashing them out from the top, and, ended with only eight tricks when both suits refused to behave.

How should South have continued after winning the switch at trick three with a top spade? He should start by cashing the club ace and queen (the suit in which he has no flexibility) making sure to leave himself an entry to dummy, and discovering the bad break. The critical play comes next, which is to cash the second top spade before trying the diamonds. By so doing, he will find out that West had started with six hearts, four clubs and at least two spades, and therefore, at most, one diamond.

Now, after crossing to the diamond king, he leads the diamond 10, with the intention of running it if it is not covered. If East does cover, South has retained the club king in dummy as an entry to repeat the finesse against the diamond nine.

The North hand provides a problem over a one club opening bid. If you play inverted minor raises, then the hand is far too strong for a three-club bid, and a one no-trump call seems misdirected and an underbid. So maybe it is best simply to raise to two clubs, pretending you have a limit raise. South can jump to three no-trumps, to end the auction.

West will lead the spade four against three no-trump and now the spotlight switches to East. If East plays the ace followed by the queen, declarer will hold up the spade king until the third round of the suit. Then, after taking the losing club finesse, he can make 10 tricks painlessly.

Instead, East must play the spade queen smoothly at trick one. Declarer is really forced to take this with the king, since otherwise he runs the risk that West holds five spades to the ace-jack and the club finesse is working, or that spades are 4-4 with the club finesse losing. In either scenario, ducking the spade queen would look incredibly foolish. In practice, though, when the club finesse fails the defenders can run their four spade tricks today.

Note: the key to this play is that East can see that he has the critical entry in clubs, and that his partner will not be confused by the play to the first trick. If East were looking at a weaker hand without a side entry, he should win the spade ace and return the queen.

In today's deal South played in three no-trump on a low heart lead. Declarer won cheaply and was about to try to run the club suit when he noticed an inconvenient fact about his high spots in hand.

Because of his nine and 10, the suit appeared to be irretrievably blocked even if the suit was about to divide 2-1.

One possibility was to try to lose a club to West, (which he might be able to do if West had any doubleton, or if he had the bare queen). But if South lost the club to East, a second heart would come through him and that would be curtains for the contract.

South found an alternative solution when he exited immediately with the heart king, knowing from the spot card led, the four, that West could not hold more than five hearts.

At the table West somewhat naively ran his hearts, which allowed declarer to shed one of his clubs and unblock the suit. Effectively, declarer emerged with seven clubs, a heart and one of the pointed aces.

However, despite declarer’s ingenious maneuver, the defense had a riposte available. Imagine that West shifts to a spade – let us say the king, for the sake of argument. Declarer can win and play back a third heart (if he gives up a club, East still has a heart left). But West wins the third heart and plays a second spade, setting up two winners for East if a club is ducked to him.

Today's theme is one that was first created by Terence Reese, in one of his outstanding collection of deals where he encourages you to play 'over his shoulder' and experience the problems in real time.

When West leads a low trump against four spades, your first thoughts should be to win in hand and continue drawing trumps. If they broke 3-2, you could knock out the diamond ace and end up taking 10 tricks by losing one diamond and two clubs. But you knew the hand couldn’t possibly be that simple; and it isn’t – the 4-1 trump break rears its head.

Now if you ruff a heart to dummy to draw the fourth trump you run yourself out of trumps and let the defenders cash hearts when in with the diamond ace.

You might consider drawing just three rounds of trumps, then playing on diamonds. Alas, that doesn’t work. West ducks the first diamond, wins the second and gives East a diamond ruff, which again results in four losers for your side.

The problem is: how to draw trumps and not end up losing too many hearts? The solution is to draw three rounds of trumps, then lead a low heart from hand. Either defender can win, and the best defense is another heart. Ruff that in dummy, draw the last trump, then play on diamonds. You have retained the heart ace, and the three losers are one heart, one diamond and one club. Your other club loser can be discarded on the heart ace.

When this deal arose South's preempts, especially when non-vulnerable, were known to be frivolous. Hence he elected to open four diamonds, and was raised to game by North – not without some trepidation.

West hit on a spade lead, and East took his ace and returned a low spade. West won his king and attempted to cash a third spade.

Declarer ruffed in hand, and needed to establish a club winner on which to pitch his losing heart. The club finesse would have been a 50% chance, but declarer did better. He played to the club ace and ruffed a club high, then took a high diamond and went to the diamond king to ruff another club high and draw the last trump. Now a heart to dummy allowed a third club ruff, and the second high heart in dummy afforded the final entry to allow him to cash the club queen.

The key to the defense is for West to establish that the third spade is not standing up, and it is East’s responsibility at trick two to make that clear to him. With two cards left he plays the higher of his spot-cards, from three left he plays the lowest. From four, as here, he plays back the highest spot-card he can afford, the eight.

At that point West can infer the precise layout of the suit, given the auction and play thus far. West must therefore shift to a heart at trick three, thereby dislodging a critical entry from dummy prematurely.

Game on the North-South cards is a perfectly reasonable contract, though it is not mandatory for you as South to break the transfer here, despite your excellent trumps. There are plenty of weak hands with scattered values opposite where game will have no chance. Give yourself a small doubleton club and an extra heart and it would be a whole different story.

The lead of the club queen to trick one dramatically reduces your hopes of making game. You might as well cover, and East wins his ace to return a low club. When West shifts to a trump you must win the spade 10 in dummy. Next you must finesse in hearts rather than diamonds.

Now the spade ace, followed by the spade jack to the queen allows you to take another heart finesse. Then you cash the heart ace, ruff a club in dummy and now a diamond to the 10 endplays West for a diamond lead or a ruff and discard.

It may not be immediately obvious, but if you play it through you will see that should you take a diamond finesse at trick four, West will win and exit in trumps again, leaving you an entry short for all the finesses you need to take.

The key to the deal is that when you give up the lead, you must force the opponents to give you some help – and that means removing all their black-suit exit cards before allowing them to regain the lead.

Today's deal, from the semi-finals of the American trials 15 years ago featured a remarkable consistency amongst the four defenders sitting in the East seat. Put yourself in their position and see if you can do any better.

At all four tables South reached four hearts after West had opened the bidding. South won the top spade lead and played a diamond to the ace and a heart to the queen, then ducked a heart to East’s jack. Should you play a third round of spades, assisting in the elimination, or try a club?

Best is to play a club, trying to take partner off a later endplay, so long as his clubs are as good as K-J-7. If you exit passively with a spade, declarer ruffs and takes a losing diamond finesse, then ruffs the next spade and runs the club 10, covered by the jack and queen. Now he cashes the diamonds, forcing West to throw a spade, and finally a third heart endplays West to lead a club at trick 12. At one table East did find the club exit, but declarer put in the seven, and the game came home.

However, all four tables had already missed the critical play on the deal – which was to unblock the heart jack under the queen, a play that experience has shown me to be one of the hardest “routine” plays in Bridge. If you do unblock, it allows West to cash his second heart trick, and exit in spades. Now declarer must go down.