Tag Archives: slam bidding

Bidding Critique

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Here is an auction I observed recently on BBO:

 

What do you think of the bidding by North? And how about South’s action? Give it some thought and see my critique below:

 

 

 

 

 

 

 

 

 

 

North erred by “super” accepting the transfer (jump to 4S) with the known 9+ card fit. That may work out occasionally but not recommended for two reasons:

 

  1. South knows partnership assets within half a point. So, South will know to pass, drive to game, or check on prospects for slam. Super accept uses up too much bidding space, reducing ability to make cue bids at the four-level.
  2. If South has a bust hand, North may have trouble making four spades. Don’t risk an almost certain plus score by overbidding.

 

South was on the right track to visualize a slam opportunity if partner has a diamond fit and if partner has the ace of hearts. Those are two big IFs. Too big to commit to slam. South erred by not passing North’s bid of four spades.

 

Post mortem: Best way to reach slam is to cue bid your way there. North used up too much space with the “super accept”. Without it, South could have made a mild slam try by bidding four diamonds. North would then temporize with five spades, denying first round control of hearts. And, since South should be worried about two quick losers in hearts, that’s where the bidding would end.

 

 

The Sometimes Curse of 3NT

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We are always reluctant to go past 3NT in the bidding, particularly when rebidding a minor suit after partner bids of 3NT. Here is a hand I held as South recently where I faced that dilemma:

Wimp1

My hand values at 20 points after partner rebids her clubs (the club queen will fill in her suit). I jump to three diamonds at my second turn, forcing to game and showing slam interest. Do you agree with my action so far? What would you do after partner bids 3NT?

I chose to pass. That was a mistake in retrospect. By rebidding four diamonds, we can reach a minor suit slam in diamonds or clubs. My hand to too unbalanced to sit for 3NT.

Game or Slam?

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You are in 2nd seat holding this fabulous hand.

fab hand2

Counting 9+ tricks, you open two clubs. Partner responds two diamonds, waiting. Your rebid is two spades, and partner raises you to three spades. How do you interpret partner’s bid and what is your next call?

Note that partner did not go right to game as she might have done with a minimum hand and spade support (known as “fast arrival”). She is suggesting your side may have potential beyond game. With that in mind, cue bid four clubs to show 1st round control.

Good news: Partner cooperates further by cue bidding four hearts, showing 1st round control of hearts and denying 1st round control of diamonds. Now you should jump to six spades, knowing you have a good play for the slam.

Eye Opening Slam Bidding

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I discovered new slam bidding insights when kibitzing this hand recently on BBO. East-West were world-class players Robert Levin and Geoff Hampson.

Rlevin Slam

East forced to game in spades with his Jacoby 2NT response. His hand was too good to make a splinter response of four clubs.

Rlevin Slam1

 

Rlevin Slam2

When East next asked about kings, West denied having any by jumping to six spades (East already knew about the king of spades from the RKCB inquiry). Eye opening slam bidding by EW.

*25 Conventions You Should Know by Barbara Seagram and Marc Smith, p. 86. Entire book is highly recommend: https://www.amazon.com/Bridge-Conventions-You-Should-Know/dp/189415407X

FYI nicesummary of RKCB  http://web2.acbl.org/documentLibrary/play/Commonly_Used_Conventions/romankeycard.pdf

Levin also demonstrated how to play this well-bid hand. Here is his puzzle for you: How did Levin hold his heart losers to one after lead of a low diamond by North? I will get to that tomorrow.

Quote of the Day

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The control-showing cuebid was the single most significant advance in bidding theory ever made, and is far more useful for accurate slam bidding than Blackwood* can ever be.

*I would add Roman Keycard Blackwood as well.

This is from 25 Conventions You Should Know by Barbara Seagram and Marc Smith. Use cuebids whenever possible.

Too Aggressive this Time

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My partner opened the bidding one heart in 2nd seat. I held this hand as responder:

agressive

I really like my hand. I want us to end up in at least four hearts. Partner may be able to bring home five spade tricks from dummy. I responded one spade. Partner’s rebid was two diamonds. My rebid was three clubs (4th suit forcing to game).

Partner next bid three diamonds, so I know that she is at least 5-5 in the red suits. I bid three hearts, setting hearts at the trump suit, and partner raised to four hearts.

This is where I went off the rails. I should not have been so anxious to use my new cue-bidding-to-slam tool. Too many warning signs: misfit in diamonds, no second-round control in clubs, none of the top four honors in hearts, no extras shown by partner in the auction.

Undeterred, I foolishly cue bid four spades, showing first round control. Of course, we got too high and missed our easy game. Sorry for falling in love with my hand, partner.

Cue Bidding to Slam?

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Update 2/1/2020: Thanks to Robin. She alerted me in the comments that the 2NT response on this hand should be a game forcing raise in hearts rather than spades.

qbid1

qbid2

 

qbid3

 

More on Jacoby 2NT here. More on Splinters here.

Another on Cue Bidding Your Way to Slam

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slam4

Cue bid your way to slam again on this hand. East opens the bidding one heart in 2nd seat. West responds 2NT, a game forcing heart raise known as Jacoby 2NT. East’s rebid is four hearts (fast arrival showing a minimum opening bid).

slam5

Slam?

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Update 1/30/2020: I got the logic wrong on this when I made an editing error. I will repost it later today for all two of you who puzzled over it.

Most pairs did not get to slam on this hand. Would you get there? If so, how should the bidding go?

update slam

South was the dealer and opens one heart. Note that this is a sound opening bid: South has 12 high card points, plus one additional point for the 5th heart, plus two and ½ quick tricks.

How should North respond? I recommend the use of Jacoby 2NT. It’s an artificial, game forcing bid that tells partner you have 4+ hearts. Your eventual contract will be at least four hearts.

How about South’s rebid? South has a minimum opening bid with no singleton or void. I recommend South rebid four hearts. That’s known as fast arrival, informing partner that (based on your hand) you have no interest in going beyond game.

This is where it gets interesting. What should North do at her second turn? I recommend cue bidding as the way to possible slam. North cue bids five clubs, a primary cue bid showing 1st round control of clubs and denying 1st round control of spades (since spades were bypassed).

Now South cue bids five diamonds, the lowest available primary cue bid to show 1st round control of diamonds.

North, worried about spades based on the auction so far, retreats to five hearts.

Now South signs off in six hearts, since she has 1st round control of spades.

 Nice article on primary and secondary cue bidding from Ron Klinger here. You will see a few editing errors, but the logic is clear and easy to figure out.

More on Jacoby 2NT here.

Do You Have a Slam?

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slamish1

slamish2

Looks like you will have to successfully locate the king of spades or the queen of hearts, although partner may have the queen of hearts. Even if king of spades is on side you may not be able to drop it. Other posssibilities are ruffing out the queen of hearts or setting up a trick in one of partner’s minor suits. Slam is no sure thing, but it’s probably a little better than 50 percent. I would bid six.

Which Slam?

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Your partner opens 1NT (15-17) in second seat, and it’s hard for you to believe that you have this huge hand:

Gslam

Where do you go from here? If your partner has 16 or 17 high card points you should be in a grand slam (16 plus your 21 equals 37, minimum for a grand). But what if your partner opened with 15 HCP?

Holding 15 points, it’s possible that your partner opened missing the ace of clubs, in which case you want to sign off in the small slam (15+21+4 for the ace equals 40). You will find that out by using the Gerber convention.

Once you are assured that partner holds the ace of clubs, she must have at least 11 other high card points. That leaves the opponents with at most four high card points, which must come from these cards: spades K Q J, hearts Q, diamonds Q J, and clubs K J. Those four points will be from either a queen and both jacks, or two queens, or a king and a jack. It looks like you will have a good play for the grand with most of those possible combinations. Notice that your hand is bolstered by the 10 9 of clubs and the married J 10 of hearts.

But shouldn’t you just be conservative and settle for the small slam. No, you should go with the percentages. Thats what the good players will be doing, so making an overtrick in a small slam is likely to award fewer than 50 percent of the matchpoints.

Do we have a slam?

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There was lots of postmortem discussion on this hand the other day:

GF in spades

Nobody got to six spades, yet all were making six. How can you bid it? Answer is you cannot, and you should not. It only makes because of the lucky diamond features and location of heart queen. Moreover, spades are behaving nicely (West does not hold A J x of spades). Everything worked just right in this unlikely lie of the cards.

But say you gave North the diamond king rather than the king of clubs, so that the hand looked like this:

GF in spades a

North’s hand is actually improved a bit with the marriage of top two diamonds. But there is no play for six spades in this layout. NS prospects are hampered by duplicative values in diamonds.

This revised hand (board 22a) illustrates the usefulness of splinter bids. South opens the bidding one club and North responds one spade (EW are silent). Now South splinters by jumping to four diamonds (one level higher than a jump shift)! The jarring nature of the jump by partner also jars the memory, so it’s easy to remember that you are playing splinters. The game-forcing splinter promises shortness in diamonds (singleton or void). North becomes aware of the duplicative values in diamonds and signs off in four spades.

Of course, you and partner must agree beforehand that you are playing splinters. Here is the relevant portion of the convention card:

CC majors w arrow

Notice that splinters (in red on the convention card) are alertable. You can often make a small slam with fewer that 33 points when partner knows that the shortness coveyed by the splinterer is a feature (e.g. not duplicative value).