Monday, 15 July 2024

Euro Heartbreak by Foxymoron

I understand how England felt in the Euros. However, "Second place is no disgrace" is a backgammon saying that they should consider. That means, in backgammon, that saving the gammon but losing the game is often the right approach.

Wales would have settled for second place in the European Bridge Championship, but came 30th. That sounds ok, except that only 30 teams entered. Still your scribe did win a few matches. This was one instructive hand.


The bidding was illuminating, South was the dealer at game all. (2H)-Double-(4H)-4S-(All Pass). South led the king of hearts and North overtook to play a second heart. You ruff in dummy? What now?

I will let you "go figure" and give the solution next week. A few strong players I gave the hand to went off. 






Thursday, 11 July 2024

The Eight of Clubs by Foxymoron

 


All the playing cards have some meaning. In cartomancy the eight of clubs represents a casual or open relationship, but in bridge it has little significance. It was, however, crucial on the following hand. 


I was disappointed not to be sitting East-West on this hand, as I might well have reached the top spot of Six Diamonds here. With a couple of regular partners we should have bid (Pass)-Pass-(Pass)-2C*-(Pass)-2D*-(Pass)-2H*-(Pass)-2S*-(Pass)-2NT-(Pass)-3NT*-(Pass)-4D-(Pass)-5C-(Pass)-6D-All Pass. 2C is strong, 2D a relay, 2H is hearts or balanced, 2S a relay, 2NT is 20-22 and 3NT is Baron, forcing for one round. Then 4D is natural and 5C is a cue and a slam try. With good controls, West would accept. Declarer can ruff two hearts in hand and only needs trumps 3-2.

No pair found diamonds, and the number of tricks made in no-trumps varied. The right line in 6NT is to try to find someone with Ax of clubs, and then to run the diamonds hoping either for the jack of spades to drop or to squeeze a defender holding the jack of spades and five hearts. But it is a poor contract, and cannot make as the cards lie.

4NT was a popular contract, and, indeed, has ten top tricks. But that was below average and you needed to make 11 for a good score. On a passive diamond lead, say that you guess to play a club to the queen at trick two. It loses and a club comes back which you win. Now the line for 11 tricks is to cash the two top spades, two top hearts, and all the diamonds ending in East. South has to keep Jxxx in spades and therefore has to bare the jack of clubs. Now you can throw him in by exiting with the eight of clubs. But that is very much double-dummy, but is one of the reasons 5NT is making. The other is that you can duck a heart, and then play a club to the king, North must duck this, but now you can cash all the pointed-suit winners, and this squeezes North who has to bare the ace of clubs. If you read it, you can duck a club and make eleven that way. Again completely double dummy.

There is a free podcast from the author at Games and Gambling with Paul Lamford - YouTube

Tuesday, 4 June 2024

An Expert by Foxymoron

I think there are more quotations about experts than any other category of person. One of my favourites is  "An expert is a man who has made all the mistakes which can be made, in a narrow field." by the Nobel Prize Winner Niels Bohr. A less serious one is "An ex is a has-been and a spurt is a drip under pressure".

The one that sprung to mind after a hand at the Club Pairs recently was, I believe, from David Burn, "An expert is someone who knows what he should have done just after he did something else". 


We had a surreal auction: 1NT-(2H)-6C-(Pass)-7C-All Pass. I am not sure why my partner thought we could make grand ("three aces partner"), and indeed, with hindsight, passing 6C or even bidding 6NT would have won the event. A diamond lead would have given me no chance, but South naturally led his partner's suit. I won, discarding a diamond, correctly ruffed a heart, crossed in clubs, and fatally ruffed a heart to isolate the menace. I could not now make the contract, but if I had planned better, I would have just run all the clubs except one, and then cashed the king and queen of spades. Now, and only now, should I cross to the ace of spades, and this catches North in a trump squeeze in the following ending.


If North pitches a diamond, declarer cashes the ace of diamonds and returns to East with a heart ruff. If North pitches a heart, then declarer ruffs a heart and returns to the ace of diamonds to enjoy the long heart. 

Ruffing the heart prematurely destroys the fragile end position, as the menaces are over dummy which gets squeezed first.

Sunday, 19 May 2024

Bridge with imagination

 Although I am not a member anymore this hand was played against two Woodberry members at the Young Chelsea Mixed Pairs so I think it qualifies for the blog.

"Director!" I hear the opponents call at the next table.  The score on this board cannot possibly be correct.  Probably one of ours I say.  Sure enough the director comes over to me and I confirm that West did indeed make 3NT + 1 on hand 18


As I said to the pair who called the director you clearly don't have enough imagination

So for fun as an exercise to the reader how did this result happen (hint there is one card in the South hand that gave the defence a problem)?

Bonus question why did 3NT+1 score below average for EW?

I will reveal all in a few days :)



Wednesday, 15 May 2024

The Closed Hand by Foxymoron

The above expression is given in the dictionary as the "declarer hand in bridge", but I was surprised that two other meanings of which I was aware were not given. One is the acknowledgement of defeat (or the greeting at the start) in a two-player match such as snooker by the touching of a closed hand. The other, with a black closed hand, is the symbol of the #BlackLivesMatter movement.

It is the first meaning that is the theme of this week's blog, which features an interesting hand from the SIMs at the Woodberry on Tuesday.


Three pairs reached the pushy slam. One was in 6H by East going off, one was in 6H by West making and finally one was in 6S by East going off. There is nothing to choose between the contracts you might think as all of them require guessing the spades. Let us say that you are playing 6H by East on the lead of the eight of clubs. You win and draw three rounds of trumps ending in West.

Now you lead the queen of spades from dummy and North covers perforce while you win with the ace. Now the right line is to run the nine. Suitplay, the omniscient computer program, tells me this is wrong and you should cash the jack. It is an excellent piece of software by the way. It is freeware and can be downloaded at SuitPlay (jeroenwarmerdam.pythonanywhere.com)

However, it has to make some assumptions about what the defenders do and do not know, and this is where the "closed hand" comes in to the picture. If a defender can see the eight and the nine, he or she should duck with Kx and cover with KT doubleton when the queen is led. If the defender cannot see the eight and the nine, he or she should cover with Kx. So, here, if you are playing it from the East hand, you should play North to have Kx (or singleton king) and run the nine on the second round. If you are playing a slam from the West hand, then you should play for North to have covered because he has KT doubleton, and play as Suitplay does and cash the jack.

There was not much difference playing in Six Spades, again by East on a club lead. Declarer crossed to the ace of hearts and led the queen of spades but David Herbert subsequently went off. As Pope said:

A little knowledge is a dangerous thing
Drink deep or taste not the Pierian spring.

Oscar Wilde quipped:  ‘There are two ways of disliking poetry. One way is to dislike it, and the other is to read Pope.’

Mike Bull and John Bernard were the beneficiaries of 6S-1 and this helped them to a near top, and a fine win nationally with 66.18%. And why should North cover from Kx, which Suitplay regards as "not optimal"? Well, just consider for a moment how you would feel if South had T9x or T8x and you duck ...

As your scribe was not there, I relied on Graham Osborne's excellent booklet to write my blog. Another interesting hand which helped the winners to their national success was the following.


The key on this hand is not to bid slam, which might well fail, but to play it in no-trumps and Bull-Bernard, which sounds a bit like a dog, achieved this well. They had an uncontested auction which started 1H-1S-2C-2D. The last is fourth-suit forcing, best played as game-forcing. Now I prefer 2H as North, treating the hand as six hearts. South's 3NT ended the auction, and they had avoided playing in 5C, which should have scored zero, but would have actually scored 20%. 

Graham Osborne thought that slam was against the odds, but I thought that both 6H and 6NT were odds on, and so it proved when I plugged in the hand to Bridge Analyser.


That shows that all three slams are with the odds. While there are only 11 tricks if hearts are 3-2, there are excellent squeeze chances with the trump squeeze in 6H looking the best option. But as can be seen from the Woodberry and national results, you don't need to bid a slam to score well. You just need to play it in the higher-scoring no-trumps. 3NT+3 was worth 69% at the Woodberry, and even more nationally, so more than acceptable.

I recall Tiger Woods being interviewed by Sarah Stirk, the Sky commentator, after a solid start in the first round of the 2006 PGA Championship at Medinah. He was pleased with his score, and said to Sarah, "If you had offered me a 69 this morning, I would have accepted". She smiled.




Thursday, 9 May 2024

Bid Boldly by Foxymoron

The heading is half of the title of a famous book by the late Rixi Markus, one of England's best ever players, who rivalled Helen Sobel as possibly the best woman player in the world. The book is still available on Amazon.


Andrew Conway did not have the luxury of a safety play on a hand this week as he was in a grand slam. Some optimistic bidding had reached a poor contract, but he seized his only chance to make.


West, Conway, started with 1H, playing four-card majors, and North, Lamford, made an aggressive weak jump overcall of 3D. East, Verran, might have bid 4C but chose 4D and West bid Key Card Blackwood, 4NT. East showed two key cards with 5H and now West bid 5NT asking for kings. East bid 6D, a modern treatment of this convention, which either showed the king of diamonds OR showed the other two kings outside the trump suit. Knowing that they held all the aces and kings, Andrew decided that this was enough for grand and bid 7H. 

Following traditional thinking, North led a trump to the ten and queen. Conway led another heart which went to the ace, and a third heart drew a disappointing seven from South. The diamond length suggested that South would have the longer hearts, but Andy looked deeper and rose with the king, dropping North's jack. There were two good reasons for this. Unless the queen of clubs dropped, West would have to ruff a club which he could not do if trumps were 4-2. In addition, if South had JT76 in hearts, he might have played the other honour on the first round - the principle of restricted choice. 

When hearts were 3-3 and the queen of clubs dropped doubleton, Andy secured an unsurprising top for his 2210.

If North had not bid, then EW would have played quietly in 6NT, so Lamford was hoisted on his own petard by his weak jump overcall. This phrase, which indicates an ironic reversal or poetic justice, seems to have first occurred in Hamlet, Act 3, Scene 4:

For 'tis the sport to have the enginer
Hoist with his own petard; and 't shall go hard
But I will delve one yard below their mines




Wednesday, 1 May 2024

Absolute Zero by Foxymoron

The very old gambling game Fan-Tan is thought to have originated in the fourth century in China. It is peculiar because it seems to be unaware of zero. The "house" removes small objects from a big pile until either 1, 2, 3 or 4 remain. Players bet on which of those it will be. Zero was invented in Mesopotamia around 3 BC, and the Mayans invented it independently around 4 AD. It seems the Chinese were not "aware" of it, or their game would have remainders of 0,1,2 and 3.


The game originally offered pay-outs of 3:1, but nowadays there is a commission on winning bets, often as high as 5%. If the house take is zero, then the game can be beaten, as 4 is slightly more likely to be the remainder. Just think of a random number between 4 and x inclusive. The remainder when 4 are removed at a time is slightly more likely to be 4.

My partner and I reached a slam last night at the Woodberry, where I think the chances of success were absolutely zero. Given that is -273.15°C, I guess you could say it was cold ...


We  bid, uncontested, 1C-1H-2H-2S-4H-4NT*-5S*-6H. It is the nine of clubs away from having some play, but with the actual cards there is no layout which gives it a chance. 2S in our auction was a game try, and 4H accepted. 5S showed two and the queen, and the damage had now been done.

I have some sympathy for my partner's actions as North, but slam always rates to be slightly against the odds even if the fit is better. A simulation on Bridge Analyser, giving partner a 14-count with 4 hearts, has the following matrix:



The above mini-chart shows the percentage for each number of tricks (on the top row) that North will make in hearts. So, slam will make 42% of the time. One needs it it to be 50% to be justified in bidding it.

Another useful bit of software is the Kaplan-Rubens hand evaluator, fairly accurate on balanced hands. That makes the North hand 16.75, and slam rates to be poor opposite a 14-count. For completeness, the South hand weighs in at 13.85, so fairly normal to accept the game-try of 2S. And fairly normal to make only 11 tricks.