I find that I wrote a draft on this subject some time ago (during 2011 I think). I'm going back to it now because I want to make a few remarks on Walsh and XYZ [although I don't mean to imply that these two conventions must go together – but as we will see, it helps].
Continuing our discussion related to opening with a (possibly prepared) minor bid in Prepared Bids (part 1). Now, Mr. Walsh comes along and makes life yet more complex. Playing Walsh, both partners agree that, holding a four-card major, there is little point in responder bidding 1♦ over 1♣ unless he has at least invitational strength. If responder has a weak hand and a four-card major he simply bids it. This maximizes the chances of finding a four-four fit and being able to stop at the two-level. If responder has at least invitational values (i.e. enough to make a "check-back" bid at his second turn), he can afford to start with 1♦ if he wants to. Partner will assume temporarily that there is no major suit fit and rebid 1NT with any balanced hand that didn't fit in the range for an opening 1NT [yes it's OK to rebid a major if the hand is unbalanced]. With a four-card major and invitational values, responder now makes a check-back bid (New Minor Forcing, XYZ, etc.) and if there is a major suit fit, it will be found.
Playing Walsh, therefore, even the second hand (♠84 ♥KQ65 ♦KJ6 ♣A963) must rebid 1NT. If partner has a weak hand with four hearts, he would have bid 1♥ to begin with. If he has invitational or better with four hearts, he will now make his checkback bid and all will be well.
Not everyone feels that Walsh is an advantageous system – so are there really any drawbacks, assuming that you have a good check-back system? One disadvantage is that with two minimum hands, our best contract might well be two diamonds on a 4-4 fit and we could miss it. But if you think about it, the chances of us actually being allowed to play in this ideal contract are negligible. If we have an eight-card fit and around half the points in the deck, the opponents are very unlikely to allow us to play there even if we do bid it.
In some cases, where we have a safe harbor in two diamonds, XYZ can come to the rescue. Suppose you have ♠3 ♥AT83 ♦QT832 ♣Q7. Playing Walsh, you bid 1♥, eschewing your five-card diamond suit. Partner now rebids 1NT. While 1NT may be the ideal matchpoint contract when non-vulnerable, it can be a liability when the opponents have at least an eight-card fit in an unbid suit (spades in this case). Although there are a lot of hands types that partner can have, he certainly has at least two diamonds since if he was unbalanced with a singleton diamond we would either raise hearts (possibly on three), bid 1♠ or rebid 2♣. It's also even possible that opener has 4-4 in the minors (see below) in which case his shape is most likely to be 3244 (although 2344 is also possible). In all of these cases, two diamonds should be a playable contract if you can get there. Having agreed XYZ (this also applies to two-way checkback), over his 1NT rebid, you bid 2♣, partner bids 2♦ and you pass!
Now, if the opponents come in over 2♦, you won't mind so much: you weren't that thrilled with the contract anyway. And even then, opener might raise with a diamond fit.
We touched briefly there on opening 1♣ with four-four in the minors. Since writing the draft of this, I published a blog entry specifically on that subject: Opening with 4-4 minors.
Now, let's concentrate on how XYZ works. I don't know who first developed it, but I think it is one of the best conventions around. I was fortunate to learn it in my early days of bridge so to me it is second nature. I'm still awaiting the book on XYZ (David Metcalf, Howard Piltch, are you listening?) but there is a reasonable summary on the internet here.
Like two-way new minor forcing, which operates over opener's rebid of 1NT, XYZ operates after any sequence that starts with three bids at the one level, including some which involve competition. The basics are easy of course. Responder's rebid of 2♣ forces a 2♦ response by opener, although in the case of a major-suit rebid by opener, who at that point is almost unlimited in strength, it is permissible to skip 2♦ if the hand is too good to allow a drop at 2♦. Because there are many more sequences available than in the special case of the 1NT rebid, there's a lot to discuss with partner about follow-ups. But to be honest, in ten years of playing the convention, I don't think that it's ever mattered that we didn't have all the follow-up sequences defined.
One thing I do like is this: after the invitational sequence 1X–1Y–1Z–2♣–2♦, responder now gets to show directly which potential "asset" he is interested in hearing about from opener. This allows more auctions to end at the two-level.
Let's look at an example: opener holds ♠KJ93 ♥T87 ♦A3 ♣KQT4 and responder ♠84 ♥KQ652 ♦JT6 ♣A93. Opener starts with 1♣ (assuming a 14-16, 15-17, etc. notrump opener) and responder bids 1♥. Opener rebids 1♠ (admittedly, 1NT is also possible). Responder bids 2♣, opener 2♦ and responder 2♥. Knowing we have an eight-card heart fit and and fewer than 25 hcp, we can decide to pass and we are still at the two-level (yes, I'm sure there's a few of you out there who will re-invite with 3♥ or jump straight to 4♥).
As always, however, we must ask ourselves if the natural meanings for the artificial bids wouldn't be more valuable. Basically, we are giving up the possibility of giving preference to partner's clubs at our second turn. We can play three clubs by going through the relay and then bidding 3♣ to play. What about a weak responding hand like ♠8 ♥KQ62 ♦JT6 ♣98732? If, after 1♣–1♥, opener rebids 1♠ or 1NT we could, playing standard methods, bid 2♣ to play. When we can't do that it's occasionally a concern, but I can't actually remember the last time it caused me any kind of a problem. Again, if we have a good fit in clubs, we will never get to play it.
To summarize, I have found that playing Walsh and XYZ together is simple, effective and feels very natural. Like any convention, if you choose to adopt XYZ you must realize that you'll have a couple of disasters before it shows its worth. But I really think it's well worth the trouble in the long run.
Monday, December 24, 2012
Thursday, December 13, 2012
Dodging a bullet – or two
Imagine that you are playing the convention known as suction. I'm talking about the ACBL-legal version that operates over an artificial forcing club bid (1♣ or 2♣ depending on system). White on red at matchpoint scoring, you pick up ♠T96 ♥5 ♦87 ♣KJT9643 and, after partner passes as dealer, you hear RHO bid 2♣ (strong, artificial and forcing). You bid 3♠ which is essentially a club preempt or a two-suited hand with both red suits. The next player bids 4♥ and partner doubles. This is passed back to you. What's going on?
In fact, we have an explicit agreement about this type of situation (see DSIP rule summary), but for the sake of argument, let's actually think about the logic. LHO presumably has a good heart suit (this doesn't seem like a good time to be psyching!) and RHO has some kind of a monster hand. So, what kind of hand would partner have to have in order to make a penalty double here? Shortness in clubs, very good hearts and perhaps a couple of aces on the side. Pretty unlikely, right?
But in any case, we're forgetting something. Partner doesn't actually know whether we have the club hand or the red-two-suiter hand. Well, if he has the hand we think, with all of those hearts and aces, he can presumably infer that we don't have the red two-suiter. But that hand is so unlikely, it's just not in the realm of possibilities. There are only 40 points in the deck: opener has at least 20, we have four, LHO presumably has some, more if his hearts aren't very good. That doesn't leave a lot for partner's penalty double.
And, if partner does have this miracle hand and they end up playing in 4♥ instead of in a better fit, wouldn't we just be thrilled to get a positive score.
No, the only sensible thing that partner's double can possibly mean is this: "I have offensively oriented cards and am planning to compete – but I don't know for sure which suit to bid or how high until I get clarification of your hand."
Why wouldn't partner simply accept the "transfer" to 5♣ and let our hand decide? For the simple reason that, in competition, that would show – guess what? – clubs.
The more I experience what makes a good penalty double and what doesn't, the more I realize that, unless all hands are balanced, in which case a double will do well provided that our cards are sitting favorably and we have more of them, it's important to have no fit for partner. So, it's absolutely essential, in the case of a distributional hand, whether partner is single-suited (which suit?) or two-suited (need to know both suits).
Opportunities for this kind of double abound. Let's suppose that we are playing DONT against 1NT openers. LHO opens 1NT and partner doubles showing a single-suited hand. RHO bids 2♦ (transfer). Our hand is something like KTx Qx KJxx Qxxx. We definitely want to compete here but we don't know where yet. So, we double, showing "cards" and not especially diamonds. In the unlikely event that LHO passes and partner's suit is diamonds he will pass too (this actually happened once). Double to ask for partner's suit is so much more useful than doubling to show diamonds.
So, any time that partner has left us in the dark about a suit (or, in the case of suction, their whole hand) double is best used to inquire. It's worked well for me.
So, what about dodging those bullets? Well, par on this board was -500 (6♣X down 3). My hand, by the way, was ♠82 ♥76 ♦AJ432 ♣A852. As you can see, my hand was eminently suitable for a sacrifice just so long as I can be sure which minor to bid. So, after my RHO bid 4♥, I doubled. LHO passed and so did partner! That could only mean that he had the red two-suiter. Had my RHO chosen to pass at the point, we would have been -890 for an absolute bottom. But fortunately, she also thought my double was for business. So she bid 4♠. Naturally, I bid 5♦. See how much I trust partner? Although I suppose if I had trusted him 100%, I might have bid 6♦! If either of my opponents had pulled out the red card over 5♦, we would have been -800 for 1 matchpoint out of 17. Fortunately, LHO bid 5♥ and there we let it rest for a 43% board. Not as good as the 73% board we might have achieved for the par result, but at least not a zero.
In fact, we have an explicit agreement about this type of situation (see DSIP rule summary), but for the sake of argument, let's actually think about the logic. LHO presumably has a good heart suit (this doesn't seem like a good time to be psyching!) and RHO has some kind of a monster hand. So, what kind of hand would partner have to have in order to make a penalty double here? Shortness in clubs, very good hearts and perhaps a couple of aces on the side. Pretty unlikely, right?
But in any case, we're forgetting something. Partner doesn't actually know whether we have the club hand or the red-two-suiter hand. Well, if he has the hand we think, with all of those hearts and aces, he can presumably infer that we don't have the red two-suiter. But that hand is so unlikely, it's just not in the realm of possibilities. There are only 40 points in the deck: opener has at least 20, we have four, LHO presumably has some, more if his hearts aren't very good. That doesn't leave a lot for partner's penalty double.
And, if partner does have this miracle hand and they end up playing in 4♥ instead of in a better fit, wouldn't we just be thrilled to get a positive score.
No, the only sensible thing that partner's double can possibly mean is this: "I have offensively oriented cards and am planning to compete – but I don't know for sure which suit to bid or how high until I get clarification of your hand."
Why wouldn't partner simply accept the "transfer" to 5♣ and let our hand decide? For the simple reason that, in competition, that would show – guess what? – clubs.
The more I experience what makes a good penalty double and what doesn't, the more I realize that, unless all hands are balanced, in which case a double will do well provided that our cards are sitting favorably and we have more of them, it's important to have no fit for partner. So, it's absolutely essential, in the case of a distributional hand, whether partner is single-suited (which suit?) or two-suited (need to know both suits).
Opportunities for this kind of double abound. Let's suppose that we are playing DONT against 1NT openers. LHO opens 1NT and partner doubles showing a single-suited hand. RHO bids 2♦ (transfer). Our hand is something like KTx Qx KJxx Qxxx. We definitely want to compete here but we don't know where yet. So, we double, showing "cards" and not especially diamonds. In the unlikely event that LHO passes and partner's suit is diamonds he will pass too (this actually happened once). Double to ask for partner's suit is so much more useful than doubling to show diamonds.
So, any time that partner has left us in the dark about a suit (or, in the case of suction, their whole hand) double is best used to inquire. It's worked well for me.
So, what about dodging those bullets? Well, par on this board was -500 (6♣X down 3). My hand, by the way, was ♠82 ♥76 ♦AJ432 ♣A852. As you can see, my hand was eminently suitable for a sacrifice just so long as I can be sure which minor to bid. So, after my RHO bid 4♥, I doubled. LHO passed and so did partner! That could only mean that he had the red two-suiter. Had my RHO chosen to pass at the point, we would have been -890 for an absolute bottom. But fortunately, she also thought my double was for business. So she bid 4♠. Naturally, I bid 5♦. See how much I trust partner? Although I suppose if I had trusted him 100%, I might have bid 6♦! If either of my opponents had pulled out the red card over 5♦, we would have been -800 for 1 matchpoint out of 17. Fortunately, LHO bid 5♥ and there we let it rest for a 43% board. Not as good as the 73% board we might have achieved for the par result, but at least not a zero.
Labels:
double
Sunday, December 2, 2012
Romanized Blackwood follow-ups
Well, I seem to have been laboring under a misunderstanding for the last ten years or so. The error in my ways was finally brought home to me at a club game with my partner Len a few weeks ago. It was actually the second time in maybe a year that this had happened (different partners) and I began to sense a pattern.
The issue arises because the Romans have an unusual counting system – and I don't mean all of those Xs, Ms, Ls, Is, etc. No, they count like this, using what is technically a modulo-three system with an inversion of the second and third digits. 0 (or 3 or 6, etc.), 2 (5, 8...), 1 (4, 7...). No wonder they have so many car accidents – they have no idea how fast they're going.
I'm kidding of course. This counting scheme, which so far as I know is only used in bridge and even then only when checking controls for a slam, is actually very well-suited to the problem at hand, especially when counting key cards [as in Roman key-card Blackwood], as opposed to just aces, of which there may be any number between zero and five. The two (and five) key card responses are imbued with an extra piece of information: possession of the trump queen (after the other responses, asker must inquire if he needs to know).
After a (Roman) 4NT Blackwood enquiry elicits one of the ambiguous responses: 5♣ or 5♦, there is a potential problem. Whose responsibility is it to continue bidding when responder actually has the higher number of "aces"? The books are generally quiet on this point, although some of them imply that it is asker's responsibility because they make comments like "Asker should know from the auction what the response shows." Only Fred Gitelman (as far as I have seen) casts any doubt on the efficacy of this idea by observing that there have been some spectacular grand slams doubled down 3 after this occurrence.
For my part, I learned somehow – I know not whence or from whom – that asker should assume the lower number and sign off. And therefore that responder would continue bidding with the higher number. This wouldn't work however when clubs or diamonds is the agreed suit and responder bids our suit at the five-level. Now, opener must step up and make the decision because a pass will end the auction unilaterally.
But when a major suit is agreed, the notion that responder will continue with the higher number is still plausible (though apparently not guaranteed). As an example, here is our auction from the most recent debacle: 1♦ – 1♥ – 2♥* – 4♠* – 5♣* – 5♥ – all pass. 2♥ showed 15-17 "dummy points" since we play 12-14 no-trump; 4♠ was kickback for hearts; 5♣ showed zero or three key cards. Is it conceivable that I would be asking for key cards with none of my own? What kind of key-card-less hand could I possibly have that wants to be in slam opposite a likely balanced hand 15-17? On the other hand, could partner possibly have a hand with no key cards? Not in this universe.
I was adamant that it was responder's responsibility to get us to slam with the higher number and that it was not required for asker to have to try to work out responder's possible hands. But unfortunately I have found no support for my position in the literature.
In this particular case, it was obvious to each of us that we had all or most of the key cards. My hand: ♠QT ♥AQ84 ♦KT6 ♣AK54 (two key cards + Q). Partner's hand: ♠AK53 ♥KT75 ♦AJ5 ♣J2 (three key cards). Assuming that partner did indeed have three, I would have played in 6NT rather than hearts. In fact, it makes 7NT with careful play. But it makes only 6♥ because the trumps split 5-0. In practice, I didn't play the hand well and only just made my contract for a poor match-point score (although not a zero). I would have likely have made 12 tricks in no-trump.
So, let's take an objective look at the situation. There's no possible hand for responder that has zero key cards given this auction. So let's look to see if there's any bad hand that asker might have had consistent with the bidding. For 5♥ to be the proper contract, asker would have to have no key cards at all and yet be invoking the key-card ask. Asker might have this hand: ♠QJT2 ♥QJ84 ♦KQ6 ♣KQ. Is it conceivable that this hand would be trying for slam opposite a hand with15-17 dummy points? It is not. But what if asker had a more distributional hand such as ♠Q2 ♥QJ98432 ♦– ♣KQ54. Note that splintering or asking with "exclusion key-card Blackwood" would not be appropriate here since opener began with 1♦. Could this hand be looking for slam by jumping straight to 4NT? Yes, it's just possible but extremely unlikely.
I think there's another, more useful, principle that can be applied here, and which I wrote about a while back in Aceless Wonders. This principle can be generalized to the following rule: do not indicate a strong hand without an ace. Or, to put it another way, all aceless hands are (relatively speaking) weak. So, strength-showing bids (incidentally, these are almost the same set of actions which Eddie Kantar considers to be triggers of the 1430 asks versus 3014 asks in his system of Roman Key-card Blackwood) all promise at least one ace:
The more significant problem with this rule is that both partners have to be on the same page (this page, in fact). I suppose then that a practical solution is the following: each partner has the responsibility of bidding on unless it is probable that the partnership is missing three key cards.
The issue arises because the Romans have an unusual counting system – and I don't mean all of those Xs, Ms, Ls, Is, etc. No, they count like this, using what is technically a modulo-three system with an inversion of the second and third digits. 0 (or 3 or 6, etc.), 2 (5, 8...), 1 (4, 7...). No wonder they have so many car accidents – they have no idea how fast they're going.
I'm kidding of course. This counting scheme, which so far as I know is only used in bridge and even then only when checking controls for a slam, is actually very well-suited to the problem at hand, especially when counting key cards [as in Roman key-card Blackwood], as opposed to just aces, of which there may be any number between zero and five. The two (and five) key card responses are imbued with an extra piece of information: possession of the trump queen (after the other responses, asker must inquire if he needs to know).
After a (Roman) 4NT Blackwood enquiry elicits one of the ambiguous responses: 5♣ or 5♦, there is a potential problem. Whose responsibility is it to continue bidding when responder actually has the higher number of "aces"? The books are generally quiet on this point, although some of them imply that it is asker's responsibility because they make comments like "Asker should know from the auction what the response shows." Only Fred Gitelman (as far as I have seen) casts any doubt on the efficacy of this idea by observing that there have been some spectacular grand slams doubled down 3 after this occurrence.
For my part, I learned somehow – I know not whence or from whom – that asker should assume the lower number and sign off. And therefore that responder would continue bidding with the higher number. This wouldn't work however when clubs or diamonds is the agreed suit and responder bids our suit at the five-level. Now, opener must step up and make the decision because a pass will end the auction unilaterally.
But when a major suit is agreed, the notion that responder will continue with the higher number is still plausible (though apparently not guaranteed). As an example, here is our auction from the most recent debacle: 1♦ – 1♥ – 2♥* – 4♠* – 5♣* – 5♥ – all pass. 2♥ showed 15-17 "dummy points" since we play 12-14 no-trump; 4♠ was kickback for hearts; 5♣ showed zero or three key cards. Is it conceivable that I would be asking for key cards with none of my own? What kind of key-card-less hand could I possibly have that wants to be in slam opposite a likely balanced hand 15-17? On the other hand, could partner possibly have a hand with no key cards? Not in this universe.
I was adamant that it was responder's responsibility to get us to slam with the higher number and that it was not required for asker to have to try to work out responder's possible hands. But unfortunately I have found no support for my position in the literature.
In this particular case, it was obvious to each of us that we had all or most of the key cards. My hand: ♠QT ♥AQ84 ♦KT6 ♣AK54 (two key cards + Q). Partner's hand: ♠AK53 ♥KT75 ♦AJ5 ♣J2 (three key cards). Assuming that partner did indeed have three, I would have played in 6NT rather than hearts. In fact, it makes 7NT with careful play. But it makes only 6♥ because the trumps split 5-0. In practice, I didn't play the hand well and only just made my contract for a poor match-point score (although not a zero). I would have likely have made 12 tricks in no-trump.
So, let's take an objective look at the situation. There's no possible hand for responder that has zero key cards given this auction. So let's look to see if there's any bad hand that asker might have had consistent with the bidding. For 5♥ to be the proper contract, asker would have to have no key cards at all and yet be invoking the key-card ask. Asker might have this hand: ♠QJT2 ♥QJ84 ♦KQ6 ♣KQ. Is it conceivable that this hand would be trying for slam opposite a hand with15-17 dummy points? It is not. But what if asker had a more distributional hand such as ♠Q2 ♥QJ98432 ♦– ♣KQ54. Note that splintering or asking with "exclusion key-card Blackwood" would not be appropriate here since opener began with 1♦. Could this hand be looking for slam by jumping straight to 4NT? Yes, it's just possible but extremely unlikely.
I think there's another, more useful, principle that can be applied here, and which I wrote about a while back in Aceless Wonders. This principle can be generalized to the following rule: do not indicate a strong hand without an ace. Or, to put it another way, all aceless hands are (relatively speaking) weak. So, strength-showing bids (incidentally, these are almost the same set of actions which Eddie Kantar considers to be triggers of the 1430 asks versus 3014 asks in his system of Roman Key-card Blackwood) all promise at least one ace:
- opening with 2NT, (strong) 2♣ (or 1♣ if playing a big club system);
- (opener) reverses;
- strength-showing jump (in the case of responder, this would have to be a strong jump shift);
- (opener) makes a game-forcing cuebid in competition;
- asking for key-cards (if none of the previous triggers have already occurred).
The more significant problem with this rule is that both partners have to be on the same page (this page, in fact). I suppose then that a practical solution is the following: each partner has the responsibility of bidding on unless it is probable that the partnership is missing three key cards.
Wednesday, November 28, 2012
You just can't make this stuff up!
Some players don't like to preempt in one suit when they have a good holding in a major suit on the side. Others feel that preempting with a void on the side is somehow evil, especially when opening with a weak two. Is it OK to preempt with a side void? How about two voids? Two voids and a five-card major? Just ask rising star Zach Grossack. Here he is playing with Kim against the robots on BBO a couple of months ago. Did someone say "unfavorable vulnerability?"
Even Victor Mollo and his Hideous Hog never quite pulled off anything like this. Note that, despite the defense holding all four aces, all four kings and a jack, they can do no better than three tricks! And, no, this was not part of a "Goulash" tournament. Kim and Zach won a whopping 15.5 imps on this hand.
If you follow the play, you will see that the West robot makes an error when he doesn't capture the diamond queen with his king. This leads to an ignominious -990 and, adding insult to injury, the robots helplessly (or haplessly?) each contribute an ace to the last trick, won with Zach's last trump. You just can't make this stuff up!
When I first saw this hand, I thought that the hand actually belonged to North/South even though they held only 11 hcp! But then I realized that E/W can legitimately make four spades (with careful play). They can also make 3NT (or four clubs) but not if North has already bid four hearts!
Zach was the only human North to play this board. Fifteen robot North's failed to appreciate the offensive potential of a three diamond opening.
Even Victor Mollo and his Hideous Hog never quite pulled off anything like this. Note that, despite the defense holding all four aces, all four kings and a jack, they can do no better than three tricks! And, no, this was not part of a "Goulash" tournament. Kim and Zach won a whopping 15.5 imps on this hand.
If you follow the play, you will see that the West robot makes an error when he doesn't capture the diamond queen with his king. This leads to an ignominious -990 and, adding insult to injury, the robots helplessly (or haplessly?) each contribute an ace to the last trick, won with Zach's last trump. You just can't make this stuff up!
When I first saw this hand, I thought that the hand actually belonged to North/South even though they held only 11 hcp! But then I realized that E/W can legitimately make four spades (with careful play). They can also make 3NT (or four clubs) but not if North has already bid four hearts!
Zach was the only human North to play this board. Fifteen robot North's failed to appreciate the offensive potential of a three diamond opening.
Labels:
hideous hog,
preempt,
Zach
Sunday, November 18, 2012
Suit quality in slam bidding (part 2)
This is the second part of the topic: Suit quality in slam bidding (see part 1). We will go into a little more detail about the issues raised there. Our first example illustrates the danger of taking the strong route to a contract versus the weaker route. As always we must recognize that the more (forcing) bids you take to get to a bid that you could have reached via a shorter route, the stronger your hand. When two sequences are equal in their numbers of steps, the one which more precisely describes your hand is the weaker sequence because it limits the possible hands the bidder can hold.
You pick up this hand and hear partner open 1♥: ♠A75 ♥KJ5 ♦T9852 ♣A5. You already know what contract you are going to play in, unless partner has significant extras (and they will have to be quite significant). That pre-ordained contract is 4♥. What's the quickest (and most limiting) way to get there in 2/1? It's to start with a forcing 1NT (essentially just a relay bid to keep the auction alive) and then jump to 4♥ over partner's rebid. He will now know you have game-forcing values with three hearts and no slam aspirations of your own. Isn't that exactly what you have?
What will happen if you bid 2♦? Nothing bad will happen if partner rebids 3♣, 2♥, 2♠ or 2NT. Over all of those continuations, you will now jump to 4♥ (fast arrival). No damage done!
But what if partner actually likes diamonds. There are several ways the auction might continue and most of them are awkward. The simplest thing is partner bids 3♦ and you bid 4♥. You will probably get away with this because it's generally understood that a raise of your minor is overruled by a delayed major suit raise. It's a jump so it can't really be a control-showing bid. Additionally, we don't bid splinters in partner's suit so it can't be a splinter for diamonds.
What if partner gets excited and bids 4♣ or 3♠ (splinters in support of diamonds)? How will you recover from that? A bid of 4♥ now will be ambiguous at best. Is it a control-showing-bid in search of a diamond slam? Is it an attempt to sign off in 4♥ (in which case how is your hand different from the one above where you went through 1NT?).
Even worse is when 4♥ happens to be your key-card asking bid for a diamond slam. Now, it can get really ugly. Maybe the best thing here is to simply bid 5♦ (at teams) in the hopes of arriving quickly in the diamond game.
This sequence actually occurred at a regional earlier this year. Kim and I were playing a very pleasant match against the eventual winners of the KOs. At our table were Pamela and Matthew Granovetter. We knew we were somewhat behind (actually we were a lot behind but we didn't realize that at the time). I opened 1♥ with ♠QT8 ♥AT972 ♦AJ76 ♣8. After Kim bid 2♦ with the hand shown above, I took a very optimistic view of my hand. In retrospect, I was clearly trying for a "swing." So much so that I bid 4♣. Now, Kim continued with 4♥. Hmm! Was that "keycard" for diamonds (we play "kickback")? Or was it a sign-off in 4♥? Well, if it was the latter, at least we had a double fit. And, although we had never specifically discussed the principle described in this blog, Kim's hand should be better than a minimum game force and have a good suit. Maybe slam wouldn't be such a bad prospect. In these ambiguous circumstances, our rule is generally to keep bidding if we think the bid might be forcing. It's usually more fun to play a tough slam in a good fit rather than play game in a suit where there's no fit at all. The predictable result was down 2 in 6♦.
So, here is the relevant principle: avoid bidding a suit in a 2/1 auction that you would be unhappy to see as the trump suit, unless you have no choice. You have some safety if the suit you really like out-ranks the one you are bidding. But, as we've seen, even that has its possible snags. Another example situation might be when you hold the following hand: ♠AKQ92 ♥– ♦AQJ6 ♣8642. You open 1♠ and partner responds 2♥, game-forcing. You have sufficient strength to bid a minor at the three-level, but do you really want to suggest clubs as trumps? Here, you do have an alternative rebid: 3♦. You might miss a good 6♣ slam. But you might also stay out of a bad 6♣ slam when partner's support is only ♣KJ92 or something similar – a holding that partner will consider to be magnificent support.
I have also observed that many players will bid a bad four-card minor suit rather than a forcing 1NT. At least Kim's suit had five cards in it! While 1NT typically denies the ability to bid game in a different strain, it certainly does not deny a hand which can raise to game in opener's suit. But, since it is forcing, it could also be used for those rare hands that already know where they plan to play, five-of-a-minor for example.
I'm happy to be the "goat" in the story because I obviously overbid. But it got me thinking about this topic and I think I now understand the concept behind "Picture Bids". A picture bid is the 2/1 version of the principle of fast arrival. See for example a good discussion of this topic by Eric Rodwell. Although Eric doesn't put it this way, it seems logical to me – based on everything we've discussed here – that since responder could, with a minimum balanced hand, bid 1NT followed by a jump to game in partner's suit then a 2/1 followed by a game bid shows a different type of minimum. What type? Well, since responder doesn't have much enthusiasm for game, it suggests that he doesn't have much in the way of values, certainly not controls, in the other suits. He's basically saying that I don't think we have slam unless a) you have significant extras of your own or b) we have a good double fit and you, opener, have control of the other suits.
Here's an amusing – for my partner and me – result from a recent club appreciation game. My hand was ♠AKT8762 ♥A3 ♦84 ♣KT and I opened 1♠ in second position at unfavorable vulnerability. Partner bid 2♦ with ♠QJ ♥K75 ♦Q9763 ♣AQ3 and I jump-rebid my spades. I don't recall for sure what happened next but I think partner raised to 4♠. We ended up in 6♠. I was not concerned about needing a control in diamonds because my partner had bid this suit as a 2/1 bid and then supported my spades. This time, however, we got lucky. The DA was singleton and the slam is cold.
Admittedly, this is a tricky hand. With 14 hcp, the hand does seem a bit too good to make a forcing 1NT followed by 3NT. But if I had to come down on one side or the other, I would take the low road, starting with 1NT, simply because of the quality of the diamond suit.
What will happen if you bid 2♦? Nothing bad will happen if partner rebids 3♣, 2♥, 2♠ or 2NT. Over all of those continuations, you will now jump to 4♥ (fast arrival). No damage done!
But what if partner actually likes diamonds. There are several ways the auction might continue and most of them are awkward. The simplest thing is partner bids 3♦ and you bid 4♥. You will probably get away with this because it's generally understood that a raise of your minor is overruled by a delayed major suit raise. It's a jump so it can't really be a control-showing bid. Additionally, we don't bid splinters in partner's suit so it can't be a splinter for diamonds.
What if partner gets excited and bids 4♣ or 3♠ (splinters in support of diamonds)? How will you recover from that? A bid of 4♥ now will be ambiguous at best. Is it a control-showing-bid in search of a diamond slam? Is it an attempt to sign off in 4♥ (in which case how is your hand different from the one above where you went through 1NT?).
Even worse is when 4♥ happens to be your key-card asking bid for a diamond slam. Now, it can get really ugly. Maybe the best thing here is to simply bid 5♦ (at teams) in the hopes of arriving quickly in the diamond game.
This sequence actually occurred at a regional earlier this year. Kim and I were playing a very pleasant match against the eventual winners of the KOs. At our table were Pamela and Matthew Granovetter. We knew we were somewhat behind (actually we were a lot behind but we didn't realize that at the time). I opened 1♥ with ♠QT8 ♥AT972 ♦AJ76 ♣8. After Kim bid 2♦ with the hand shown above, I took a very optimistic view of my hand. In retrospect, I was clearly trying for a "swing." So much so that I bid 4♣. Now, Kim continued with 4♥. Hmm! Was that "keycard" for diamonds (we play "kickback")? Or was it a sign-off in 4♥? Well, if it was the latter, at least we had a double fit. And, although we had never specifically discussed the principle described in this blog, Kim's hand should be better than a minimum game force and have a good suit. Maybe slam wouldn't be such a bad prospect. In these ambiguous circumstances, our rule is generally to keep bidding if we think the bid might be forcing. It's usually more fun to play a tough slam in a good fit rather than play game in a suit where there's no fit at all. The predictable result was down 2 in 6♦.
So, here is the relevant principle: avoid bidding a suit in a 2/1 auction that you would be unhappy to see as the trump suit, unless you have no choice. You have some safety if the suit you really like out-ranks the one you are bidding. But, as we've seen, even that has its possible snags. Another example situation might be when you hold the following hand: ♠AKQ92 ♥– ♦AQJ6 ♣8642. You open 1♠ and partner responds 2♥, game-forcing. You have sufficient strength to bid a minor at the three-level, but do you really want to suggest clubs as trumps? Here, you do have an alternative rebid: 3♦. You might miss a good 6♣ slam. But you might also stay out of a bad 6♣ slam when partner's support is only ♣KJ92 or something similar – a holding that partner will consider to be magnificent support.
I have also observed that many players will bid a bad four-card minor suit rather than a forcing 1NT. At least Kim's suit had five cards in it! While 1NT typically denies the ability to bid game in a different strain, it certainly does not deny a hand which can raise to game in opener's suit. But, since it is forcing, it could also be used for those rare hands that already know where they plan to play, five-of-a-minor for example.
I'm happy to be the "goat" in the story because I obviously overbid. But it got me thinking about this topic and I think I now understand the concept behind "Picture Bids". A picture bid is the 2/1 version of the principle of fast arrival. See for example a good discussion of this topic by Eric Rodwell. Although Eric doesn't put it this way, it seems logical to me – based on everything we've discussed here – that since responder could, with a minimum balanced hand, bid 1NT followed by a jump to game in partner's suit then a 2/1 followed by a game bid shows a different type of minimum. What type? Well, since responder doesn't have much enthusiasm for game, it suggests that he doesn't have much in the way of values, certainly not controls, in the other suits. He's basically saying that I don't think we have slam unless a) you have significant extras of your own or b) we have a good double fit and you, opener, have control of the other suits.
Here's an amusing – for my partner and me – result from a recent club appreciation game. My hand was ♠AKT8762 ♥A3 ♦84 ♣KT and I opened 1♠ in second position at unfavorable vulnerability. Partner bid 2♦ with ♠QJ ♥K75 ♦Q9763 ♣AQ3 and I jump-rebid my spades. I don't recall for sure what happened next but I think partner raised to 4♠. We ended up in 6♠. I was not concerned about needing a control in diamonds because my partner had bid this suit as a 2/1 bid and then supported my spades. This time, however, we got lucky. The DA was singleton and the slam is cold.
Admittedly, this is a tricky hand. With 14 hcp, the hand does seem a bit too good to make a forcing 1NT followed by 3NT. But if I had to come down on one side or the other, I would take the low road, starting with 1NT, simply because of the quality of the diamond suit.
Labels:
slam bidding
Tuesday, November 13, 2012
Suit quality in slam bidding (part 1)
This is the fourth contribution of what I now realize has become a series on slam bidding. I wrote the first one three years ago: Slam Tries. Since then, there have been two more: When to bid a slam and When to bid an NT slam. And while I note that Marty Bergen, Mike Lawrence, Eddie Kantar et al have written volumes on the subject, they have not covered the stuff that I am presenting in these short articles. This topic, however, has become so long that I am going to offer it in two parts.
One of the great things about playing "Two-over-one" is that responder to an opening bid in a major is able to distinguish between those hands he expects to play in game only and other hands where he would like to suggest a slam. Of course, opener might have slam ambitions even when responder wants to stop in game. And, before I get started, let me say up front that my ideas here are controversial but, I hope, compelling.
So, let's start by looking at the types of hand an un-passed responder might hold opposite an opening bid of 1♠ where he has fewer than four cards in spades:
Now, let's look at the sequences that start with, let's say, 1♠ – 2♣. Suppose opener rebids 2♦, 2♥ or 2♠, 2NT or 3♣ (the most common rebids). Here are the possible rebids by responder:
Let's look at an example of how not to bid – courtesy of my Robot partner in a recent BBO tournament:
Don't concern yourself too much with the play. I misclicked at trick 2 (I have a new trigger-happy mouse) but the damage was done during the auction – 6♠ is unmake-able!
The robot North has a minimum game-going hand with no apparent fit. I would argue that starting with 2♦ is overly optimistic with such a moderate diamond suit. After my "high reverse" of 3♣ made, admittedly on moderate "extras," my robot partner chose what is, I believe, an absolute no-no in 2/1 bidding: he showed three-card support for spades with his 3♠ call. Although I knew we were missing the ♠Q, I believed us to be in a 9 card fit with all five "key" cards, so I bid the slam.
It's better in this case to start with 1NT forcing and to see what happens next. If opener rebids clubs, then responder can confidently jump to 3NT. If opener rebids spades (promising six), then 4♠ looks right. Only red suit rebids would cause problems because we will not then be in a game-forcing situation. Do we jump to 4♥ (likely a Moyesian fit) or 5♦ (perhaps with only an eight-card fit) as appropriate? I think responder should simply bid game only unless opener makes a jump rebid, in which case responder will certainly be thinking about a slam. Poorly fitting hands are never easy to bid, regardless of system. But rest assured that the partnership will not be missing a game contract if there is one.
Not every hand is suitable for a 1NT pre-game force. You must be able to handle all of opener's rebids. Otherwise, you will have to start with a 2/1.
One of the great things about playing "Two-over-one" is that responder to an opening bid in a major is able to distinguish between those hands he expects to play in game only and other hands where he would like to suggest a slam. Of course, opener might have slam ambitions even when responder wants to stop in game. And, before I get started, let me say up front that my ideas here are controversial but, I hope, compelling.
So, let's start by looking at the types of hand an un-passed responder might hold opposite an opening bid of 1♠ where he has fewer than four cards in spades:
- a weak hand that is not worth any response;
- an intermediate-strength hand that cannot force to game:
- a minimum responding hand:
- with three spades (this hand will immediately raise to 2♠);
- with two spades (or perhaps a really bad flat hand with three spades);
- with fewer spades (this hand will have to exercise some judgment at rebid time);
- an invitational hand;
- a hand which expects to play in game but has no slam ambitions opposite a non-jump rebid:
- responder knows where the hand will likely play (4♠ or 3NT typically);
- responder does not yet know where the hand will play;
- a hand that will at least make game:
- with support for partner – and may be worth a slam;
- without support for partner.
Clearly, hand type 1 will pass and all hands of type 2 (except for 2.1.1) will bid 1NT forcing. All of the other hands will start with a 2/1 bid, right? Wrong. I will allow that the standard 2/1 texts do not address this issue at all – all of them, as far as I can tell, limit the 1NT forcing response to 11 or at most 12 hcp – however, there would be little point in me regurgitating the standard dogma here.
Types 4 and type 3.2 will start with a 2/1 bid. But type 3.1 should start with 1NT forcing! That's why it's forcing! We won't miss game. It doesn't deny game-forcing values. It only denies a desire to play in a slam or to find the best game. Responder will clarify his hand at his next turn. I first wrote about this principle almost two years ago: The Forcing 1NT.
Let's say that opener bids 1♠ and responder bids 1NT. So far, we've ruled out hands of types 1, 4 and 3.2. Now, let's suppose opener rebids two of a new suit. Responder's rebids will now make it clear what type of hand he has:
- 2♠ (type 2.1.2)
- something else (type 2.1.3)
- 3♠ or 2NT (type 2.2)
- 4♠ or 3NT (type 3.1)
- 2♠ (if available), 3♠ or 4♠ (various types of 4.1 – different partnerships might place different interpretations on these three possible ways of supporting opener's suit);
- anything else (types 3.2 or 4.2).
In the first of these, responder is making a slam try! Why make a 2/1 bid and then support partner if you didn't want to at least mildly suggest slam? You could have responded 1NT and then jumped to game (or even jumped straight to game as Precision players sometimes do) with no slam interest at all.
In the latter case (anything else), we cannot be sure where responder is heading. If responder rebids his own suit, he's interested in game or slam in his suit. We don't know which yet, but if we don't support his suit next, he's likely to give up on slam unless he has a very good hand. Incidentally, this raises the issue of whether the partnership plays strong jump shifts because if they do, then certain hand types are eliminated from a normal 2/1. However, since many 2/1 players don't see the need for SJSs, I am assuming for now that we are not playing them.
But for now, we should simply assume that the first order of business is to find a playable game, in keeping with the well-accepted principle "game before slam." Thus, we will group 3.2 and 4.2 type hands as one for now.
So, what's the point of all this? The difference between hand types 3.1 and 4.1 is ambition. Game versus slam. Now, would you seriously be suggesting slam in partner's suit if you couldn't control your own suit? Ay, there's the rub. By the process of deduction then, if responder makes a 2/1 bid and next supports partner, his suit will be a good one. Opener has a right to expect at least the A or K of the suit. This follows from the obvious inference that responder can hardly expect opener to control this suit.
And further, suppose you have a 4.2 type hand (no support for opener). You will be most pleased when opener supports your suit at his next turn suggesting honor-third or perhaps four small. When this happens you're likely to find yourself as declarer at the six level. How happy would you be if your suit was Qxxxx opposite Kxx? The answer is: not ecstatic – you will have to find one player with exactly Ax.
Let's look at an example of how not to bid – courtesy of my Robot partner in a recent BBO tournament:
Don't concern yourself too much with the play. I misclicked at trick 2 (I have a new trigger-happy mouse) but the damage was done during the auction – 6♠ is unmake-able!
The robot North has a minimum game-going hand with no apparent fit. I would argue that starting with 2♦ is overly optimistic with such a moderate diamond suit. After my "high reverse" of 3♣ made, admittedly on moderate "extras," my robot partner chose what is, I believe, an absolute no-no in 2/1 bidding: he showed three-card support for spades with his 3♠ call. Although I knew we were missing the ♠Q, I believed us to be in a 9 card fit with all five "key" cards, so I bid the slam.
It's better in this case to start with 1NT forcing and to see what happens next. If opener rebids clubs, then responder can confidently jump to 3NT. If opener rebids spades (promising six), then 4♠ looks right. Only red suit rebids would cause problems because we will not then be in a game-forcing situation. Do we jump to 4♥ (likely a Moyesian fit) or 5♦ (perhaps with only an eight-card fit) as appropriate? I think responder should simply bid game only unless opener makes a jump rebid, in which case responder will certainly be thinking about a slam. Poorly fitting hands are never easy to bid, regardless of system. But rest assured that the partnership will not be missing a game contract if there is one.
Not every hand is suitable for a 1NT pre-game force. You must be able to handle all of opener's rebids. Otherwise, you will have to start with a 2/1.
In the next part of this topic (coming soon), I will discuss "picture bids" and fast arrival with more example hands. As always comments are welcome.
Labels:
forcing 1NT,
slam bidding
Friday, November 2, 2012
A well played match?
Bridge is never dull, at least for a student of the game like myself. I love the curious little things that happen at the table. That’s what this blog is really supposed to be about.
2♥ 2♠ 3♣ 3♦
I don’t remember what happened after that but I think it went 4♥, spoiling the pattern a bit. But it was an elegant display at that moment.
This hand was a true comedy of errors. My partner didn’t really have his 5♣ bid (KJxxx Kx xxx AKQ) and we were about to be down 1 in 5♠. My RHO didn’t have the ♥K. He had the ♥A! Did he really need a heart lead? And, what was partner’s 5♥ bid supposed to accomplish anyway, particularly as the lead would be coming through his K? And, perhaps silliest of all, we couldn’t take more than six tricks in notrump, whoever was playing it! Partner passed (thankfully, nobody doubled) and then they took six diamonds and the ♥A for -250. Playing in the wrong strain cost us two imps, but no victory points. Our lead was down to 31.
Labels:
swiss
Subscribe to:
Posts (Atom)