Tag Archives: Visualizing the Opponents’ Hands

Fundamentals of Declaring Your NT Contract

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Please take a seat at our learning table. At this table you have plenty of time — 7 days rather than 7 minutes — to play the hand! Each Sunday we offer a new puzzle. The puzzle includes hints in the form of questions, questions designed to aid your play or defense. You have a week to analyze clues associated with each hint. Enjoy this week’s mental exercise:

Puzzle 1:

You are South in a contract of 3 notrump. East opened the bidding 2 spades. Then the auction proceded: pass by you, pass by West, double by partner, pass by East, 3 notrump by you, all pass.

Opening lead by West is the queen of spades. Here is what you see:

Think before you play to trick 1:

  1. Start by counting your sure winners. A sure winner is a trick you can win without losing the lead. Use the result as a basis for deciding best way to come to 9 tricks before the opponents can take 5 tricks.
  2. Use clues from the auction and opening lead to tentatively visualize the unseen hands. In particular, how do you think spades are splitting on this hand?
  3. Additional clues will be revealed by opponents’ carding during the play. For example, West shows out on your second round of the diamond suit. Now what to you know about East’s hand?
  4. Do you have sufficient entries to hand and dummy to execute your plan?
  5. Should you decide to take a finesse, when is the best time to do it?
    1. Are your chances of winning the finesse 50 percent?
    2. Do you see any additional chances that might allow you to avoid the finesse?
  6. Is there any reason to hold up at trick 1?

Do you have questions or need clarifications? If so, do not hesitate to contact Harry by text (808 854-6147) or email: Hmessenheimer at earthlink.net. Please send your solution to Harry by email before next Sunday. Harry’s solution will be published below next Sunday, including a summary of the fundamentals involved.

 

Category: Exercises: Declarer Play | Tags: , , , , , , ,

Your opening lead?

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You are West on opening lead against South’s contract of three hearts. Here is your hand:

Visualize opponents’ hands. What does that leave for partner? What’s your lead?

Category: Exercises: Defensive Play | Tags:

A Puzzle for the Defense

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Here is a good defensive puzzle. You are East. How do you plan to defend after partner leads the queen of hearts?

 

Category: Exercises: Defensive Play | Tags: , , ,

How best to play this heart suit?

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Note: This puzzle appeared in Bob Jones’s bridge column on December 14. I hope you will find it as interesting as I did. Since I am not constrained by space limitations, I felt I could add some insights to his useful discussion.

 

You are south in 3NT. Partner opens the bidding with two hearts (weak) in 1st seat. You respond 2NT, asking partner about his hand. Partner raises you to 3NT, promising a strong 6-card heart suit.

Opening lead by West is the queen of diamonds. You win in hand as East follows with the three of diamonds. Next you lead a low heart toward dummy, West following with the deuce. Here is what you see and what you know about opponents’ hands before you play from dummy:

You know from the opening lead and play so far that West started with the queen-jack and 10 or 9 of diamonds and (from West’s card at trick two) the deuce of hearts. You know one card that East started with was the three of diamonds. That leaves 9 unknown spaces in the West hand and 12 unknown spaces in the East hand.

Now you need to decide how you are going to play the heart suit.

  1.  How would you play hearts when scoring is matchpoints?
  2.  How would you play hearts when scoring is IMPs?

You can count six sure winners: two clubs, two diamonds, and two hearts. You will need to develolp 3 more winners in hearts to make the contract. 4 more heart winners would give you an overtrick. In matchpoints it’s always better to go for the overtrick when you have a better than even chance of winning it.

In thinking about your decision, notice that hearts provide your only entry to dummy.

Your best line of play depends on opponents’ shapes in their holding of the remaining hearts. What are those possible shapes? Should you finess the jack of hearts now?

This is a good one for one (maybe two) of our Wednesday think out loud lessons.

 

Category: Exercises: Declarer Play | Tags: , , , ,

Fundamentals of playing a suit contract

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Here is a hand I played at the club recently. I am in 3 spades on the bidding shown. I messed up the fundamentals. Look at my problem and see if you can do better. 

What would be your plan? (Scroll down to see the plan I should have come up with.)

 

 

 

 

 

 

Visualizing the opponents’ hands: It looks like the king of hearts is top of a doubleton (North likely started with 7 hearts). Also, East is likely to be short in diamonds. Bottom line is that you may be able to develop a crossruff without either opponent being able to overruff. You need to cash the outside suit (clubs) before starting the crossruff. Also, you need to lead a diamond to void your hand.

 

Plan:

  1. Ruff the opening lead in dummy.
  2. Low club to your king.
  3. Low diamond toward dummy (maybe you will get lucky if West has the ace and does not play it). Assume West wins the ace and returns a trump (best defense).
  4. You win West’s trump lead in hand.
  5. Club to dummy’s ace, hoping it survives.
  6. Cash diamond king, discarding heart from hand.
  7. Ruff a diamond.
  8. Ruff a heart.
  9. Heart ruff.

10. Diamond ruff.

11. Ace of spades for your 10th trick.

 

Wasn’t that easy! (I pulled trumps prematurely)

 

 

 

 

Category: Exercises: Declarer Play | Tags: , , ,

Learning by studying errors

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In my opinion there were three errors when this deal was played: a bidding error, a declarer play error, and a defensive error.

 

Check out the bidding first. Before you look at my opinion, who do you think made the error?

 

 

 

 

I don’t like South’s bid of 3C. North showed the major suits with no extras. From South’s perspective it is a misfit, and time to get out. But the better sign-off is to take the suit preference to two spades. North will be happy you stopped at the two-level. And North will like your two spade honors.

 

Now you are South in three clubs. (Suggest you print the NS hands to more easily follow the play.) Can you hold it to down one? West led the ace of diamonds followed by the king of diamonds at trick two. The eight of hearts then went to East’s jack. East continued with the ace of hearts. You trumped with a low club and led a low club to dummy’s ace as the queen fell from East. Back to your hand with the king of spades. Then the jack of clubs revealed the 5-1 break. West wins the king and exits with the four of hearts. How do you play from here? (Cover up the EW hands and see if you can avoid South’s error.)

 

 

Give it some thought before reading my recommendation.

 

 

 

The key is to make sure that West is on lead (end played so that she will be forced to exit with a trump from 9-6 to your 10-8. Do that by cashing the queen of diamonds and ace of spades. Then lead the queen of spades, discarding the nine of diamonds from hand. West will be in and forced to lead a club at trick 12.

 

The actual South did not do that. Instead, South cashed the 10 of clubs and had to lead the nine of diamonds at trick 12. Thus losing the last two trick to the 10 of diamonds and nine of clubs. The mistake cost EW a top board in a pairs game: Plus 100 instead of plus 50 by most of the field.

 

 

 

West erred on defense, however. West trumped the nine of diamonds, crashing East’s 10. And West had to give up a trick to South’s eight of clubs. Painful to watch.

 

 

 

Category: Exercises: Declarer Play, Exercises: Defensive Play, Exercises: It's Your Call | Tags: , , , ,

How would you play this one?

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Put yourself in the South seat on this hand. You are declaring 3 hearts after the auction shown below. Opening lead is the deuce of clubs. What is your plan?

 

Reminder of fundamentals involved:

  1. Think before you play to trick one.
  2. Count your losers.
  3. Remember the bidding.
  4. Visualize opponents’ hands as best you can.

 

 

Counting losers:

  1. Spades? Zero.
  2. Hearts? Zero
  3. Diamonds? Two. You are missing the ace and queen
  4. Clubs? Two. You are missing the king, queen, and jack.

 

Visualizing opponents’ hands from the bidding:

  1. East passed in 2nd seat, so should have fewer than 12 HCP.
  2. West made a takeout double after your opening bid. So, West should have an opening hand and likely shortness in hearts, 4-spades (no overcall), support for the minors.
  3. East advanced with 2 clubs. East must have 4 clubs or West would have fewer than 3 clubs for her takeout double (althought it’s possible West’s shape is 4-2-5-2).
  4. West’s rebid was 3 diamonds over your rebid of 2 hearts. West’s shape must be something like 4-1-5-3. How many hearts does that give to East? How many diamonds?
  5. Visualization: East’s shape is likely 4-4-1-4, and East’s singleton diamond is a worry.

 

Decide on your plan of play and then scroll down to see mine.

 

 

 

 

 

 

 

 

 

 

 

 

 

I plan to win the ace of clubs at trick one. Draw trumps and lead the 10 of diamonds, intending to let it ride. That will hold my diamond losses to one trick when West has ace, queen 5 times (10 tricks). If the finesse losses, I will still be home with 9 tricks, contract making.

Category: Exercises: Declarer Play | Tags: , , ,

What could go wrong?

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I failed to concentrate on what could go wrong on this one. And what could go wrong did go wrong!

Put yourself in the South seat and see if you can do better:

Opening lead was the five of hearts. East won the ace and returned the four, I won with the king, and West played the six. I then cashed the ace and king of spades and saw West discard the nine of hearts on the second spade.

From here is looks easy: Cash the queen of hearts to discard a diamond and draw the last trump. Losers are one heart, one diamond, and one club.

Oops, there was another loser. What went wrong, and how could I have avoided the error?

 

 

 

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Clues from the Auction

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You have this hand in 4th seat (favorable vulnerability). Left hand opponent opens with a weak two hearts, partner passes, and right hand opponent bids four hearts. 

It’s your turn. What do you decide to do?

First thing to think about is what kind of hands opponents have. The oppening bid is straightforward, usually promising six hearts, 5 to 10 high card points, and likely loss of no more than three tricks vulnerable..

Right hand opponent usually has two kinds of hands for continuing the preempt. It could be somewhat weakish hand with four card support for hearts. Or, it could be a good hand with only two or three card support for hearts. You are somewhat in the dark, and that’s why preempts are so annoying. Those rascals have forced you to make your first decision at the four-level!

What can you deduce from your partner’s decision to pass in second seat? If responder had the weakish hand with good trump support, then partner would be short in hearts with a good hand. But partner did not double or overcall! Therefore, right hand opponent must have a big hand. You may not want to risk jumping into the auction if that’s the case. Unless, of course, you think you can hold your loss to minus 500 (down 4 in four spades doubled).Do you think your spade textue is good enough to hold your loss to down 4? Whan I saw this played on BBO, 4th seat chose to bid four spades. He went down four for minus 800 and a bad match point result. The usual result was minus 620 or minus 650 when opponents were allowed to play four hearts — above average match point score for the defenders..

Category: Exercises: It's Your Call | Tags: ,

Think Before You Play to Trick 1

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10 tricks are easy on this one. But you are in five hearts. Where are you going to find the 11th winner? Here is the hand, auction, and opening lead.

Your thoughts at trick one:

  • What can I infer from the opening lead?
  • What can I infer about opponents’ spade holdings from the bidding?
  • If my inferences from opening lead and bidding are correct, then how many cards does East have in the red suits?
  • Now that I can picture East’s hand, how am I going to hold my losers to two?

Give it a try and then scroll down for the solution.

 

 

 

 

 

 

 

 

Your thoughts at trick one:

  • What did you infer from the opening lead? I bet it’s a singleton!
  • What can you infer from the bidding? Looks like West must have four spades for the preemptive jump raise. East must have 5 spades to the ace from opening bid.
  • If your inferences from opening lead and bidding are correct, then how many cards does East have in the red suits? East has five spades and five clubs. Therefore, East holds three red cards.

 

Now that you can picture East’s hand, you know to go up with the ace of clubs immediately. Otherwise, East will win the trick and give West a club ruff. When a spade comes back through king in dummy you will be down two after first four tricks.

The idea is to end play East in one of the black suits. Run your seven hearts. By doing so, East must protect the black suits. So, East will be left with 5 black cards:

Now when you cash your ace of diamonds, pitching a low club from dummy, East must discard a club or the queen of spades.

  • If it’s a low club, you will lead a club to the king and throw East in with a club. East will have to lead a spade from A,Q into your K3.
  • If it’s the spade queen, you will lead a low spade and play low from dummy, throwing East in with the ace of spades. Now you will make 12 tricks, since East must lead into your K, J of clubs!

 

 

Category: Exercises: Declarer Play | Tags: , , , , ,

Your plan for the defense?

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You are East on defense after the auction shown below. Here is what you see when partner leads the eight of hearts (partnership agreement is to lead low from 3 or more cards when your partner has the suit). Declarer plays the ace from dummy, three by you, and deuce by declarer.

At trick two declarer leads the three of spades from dummy.  Are you counting? What’s your plan for the defense?

Scroll down for my recommended plan.

 

 

 

 

 

 

 

 

 

 

 

 

There are two key clues to this puzzle:

  1. Partner started with doubleton or singleton heart, meaning opponents hold the top three heart honors (declarer has the queen). If partner has doubleton heart, opponents’ hearts are 3-3. If partner has singleton heart, declarer has four hearts to the queen.
  2. Opponents should hold at least 24 points, meaning partner holds at most 4 points.

 

Rise with the ace of spades at trick two and lead a heart. If partner ruffs, you will set the contract: ace of spades, heart ruff, top two diamonds.

If partner cannot ruff, opponents were always going to get the top three hearts. So, you have lost nothing. You may be able to find a fourth trick in the minor suits since partner has a little smattering of HCP. Make declarer do all the work to bring contract home.

 

Category: Exercises: Defensive Play | Tags: , , ,

A Counting Puzzle for the Defense

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This is your hand:

You are West defending South’s contract of four spades after the following auction:

Your good opening lead is the queen of clubs, and here is what you see:

As usual, you will must think about where your tricks are coming from. See if you can uncover where partner may have some help. Follow the play until trick 7, and you will have enough information to solve the puzzle.

 

Scroll below for my solution:

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Clues: Did you notice that partner gave you high-low during 1st two rounds of spades? That indicates interest in obtaining a ruff. Also, did you notice that declarer showed up with second diamond (the 3 of diamonds) at trick 7? How many remaining diamonds does that leave for partner?

Solution: Play low at trick 7, partner will ruff dummy’s honor. Declarer will not be able to establish diamond winners in dummy. Defense will come to four tricks: one club, two diamonds, and one ruff.

BTW, have you seen this hand before from another perspective?

Category: Exercises: Defensive Play | Tags: , , ,

A Counting Puzzle for Declarer

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Here is a declarer play problem. You are South in a contract of six spades on the bidding shown. North leads the ten of clubs and this is what you see:

You assume that West would not lead the club 10 when holding the king, so you play the ace of clubs and draw trumps in 2 rounds. As you do so you observe the following from opponents:

  • At trick 2 West plays the singleton queen of spades, East following low.
  • At trick 3 West discards a low heart and East follows low.
  • At trick 4 you lead a club, East winning the king and West following with the seven.
  • At trick 5 East continues with a low club, West discards another low heart, and you win the trick while discarding a low diamond from hand.

 

Your 12th trick will have to come via a successful finesse. Are you counting the opponents’ hands? Which red suit finesse offers the better likelihood of success? Give it some thought and then scroll down for my decision rationale:

 

 

 

 

 

 

 

 

 

 

 

 

West showed up with a singleton spade and doubleton club. That means West started with 10 red cards and East with five. After West discards two hearts you know that West now holds 8 red cards and East 5 red cards. Odds are 8 to 5 that West holds the king of hearts. Probability that West holds the heart king is 8/13 (61.5%). It’s the same for West holding the diamond queen. I decide to go with the odds and finesse West for the heart king.

Category: Exercises: Declarer Play | Tags: ,

Plan your rebid

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When opening the bidding make sure you plan your reibid. Here is an example:

You are in 1st seat (both sides vulnerable) holding this hand:

You have an easy minimum opening bid of one diamond with your 13 HCP. Now anticipate a response from partner might make your rebid difficult. A one heart response would make it easy for you to raise to two hearts. A response of two clubs would make it easy for you to raise to three clubs. And a one spade response would make it easy for you to rebid one no trump.

Difficulty arises if partner’s response is one no trump. You hate to pass 1NT knowing that opponents have many spades plus a troublesome number of HCP. You hate to rebid diamonds with that crummy 5-card suit. And you are way too weak to reverse to two hearts.

But you have a couple of inferences available to help you decide: First, what is the minimum number of spades held by opponents?. Second, what is the minimum number minor suit cards held by partner?  Decide on your rebid once you answer those questions.

See my decision below:

 

 

 

Inference number 1: opponents hold at least nine spades. Partner has at most three spades and I hold one.

Inference number 2: Partner did respond one heart so has at most three hearts. Ergo partner must hold at least seven cards in the minors.

 

My rebid is two clubs. That’s your best chance for a plus score.Partner did not raise diamonds, so you should have at least a seven card club fit. You will be able to hold off an attack in spades because of your shortness. Partner may take the suit preference for diamonds which would be even better.

BTW, you may have seen this hand before. Do you know where?

 

 

Category: Exercises: It's Your Call | Tags: , ,

Counting your losers in a suit contract

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You are South in a contract of three hearts doubled. Here is the auction and what you see when West leads the queen of clubs:

East overtakes with the club king and continues with the ace at trick two. Counting losers, you have two hearts, one diamond, and one club. The problem is you may lose trump control as defenders force you to ruff clubs. The good new is you are reasonably sure that East has the ace and queen of hearts. The bad news is that you need to get to dummy twice to finess of the ace and queen of hearts. Also, East may well have four hearts.

It looks like you will need the king of diamonds to be onside. So, you might as well make that assumption.

What card do you play at trick 3? (Remember that your are worried about losing trump control.)

I recommend discarding a diamond at trick two. That makes life difficult for East. She cannot continue clubs because dummy is now void. If she shifts to a spade you let it ride to dummy’s king. Now you can lead the 8 of hearts, expecting to to win or drive out one of East’s honors. Either way you are in control.

Similarly if she shifts to a diamond you will let that ride to dummy and play as before. You may even make an overtrick: three spades, four hearts, and three diamonds.

Here was the entire hand:

 

 

 

Category: Exercises: Declarer Play | Tags: , ,

Using clues from the bidding to guide your play

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You are South declaring three diamonds after West makes a preemptive jump to two spades over your opening bid. West leads the three of spades. Here is what you see with a summary of the auction:

Trick 1: You win the king of spades, East playing the jack.

Trick 2: Then you cash the ace of clubs, both following.

Trick 3: You then lead the eight of clubs, ruffing low in dummy.

Trick 4: Next comes the three of hearts from dummy and you put in the eight, losing to West’s jack.

 

At trick 5 West shifts to the four of spades. What spade do you play from hand? Scroll down for the answer.

 

 

 

 

 

 

 

 

 

 

Solution: Play the nine of spades, knowing it will get ruffed. West started with six spades for the preemtive overcall. You and dummy started with a combined total of six spades. East’s jack at trick one had to be a singleton. Don’t let your ace of spades get ruffed!

Category: Exercises: Declarer Play | Tags: , , , ,

Visualizing the unseen hands

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You are South, having ended up in a contract of three hearts. East opened the bidding in 1st seat with one spade, and you overcalled two hearts. From there it was an interesting competitive auction, during which West and North indicated weak hands by their reluctance to bid. West leads the king of spades. Here is what you see, including details of the auction:

Trick 1: You won the ace of spades.

Trick 2: You cashed the ace of hearts.

Trick 3 you gave up a spade to East.

Trick 4 East then cashed the king of hearts, West discarding the deuce of diamonds. (See details of 1st 4 tricks above.)

At trick 5 East shifts to the three of clubs. It’s your turn: Use clues from the bidding and play to decide which card to play from hand. Scroll down to see the solution.

 

 

 

 

 

 

 

 

 

 

 

Solution: You know from the auction that East has the ace of clubs. Play the queen of clubs and it wins. Once you get to dummy again you will lead another club, putting in the king if East follows low. You are assured of two club tricks, knowing that the ace of clubs is onside.

 

Category: Exercises: Declarer Play | Tags: , , ,

Best sentence I read today

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It’s from Chip Dombrowski writing in the latest edition of the ACBL District 20 newsletter Trumpet. Concluding from West’s takeout double that East cannot have any of the missing honors, Chip puts in the queen of hearts from dummy. When East wins the trick with the heart king Chip comments:

It is one of my great pet peeves when people turn up with cards they are known not to have.

We have all experienced that peeve. It seems to occur at least twice every session on BBO.

Category: Exercises: Declarer Play | Tags: , ,

How Will the Missing Cards in a Suit Break?

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Karen Walker has posted a useful table of probabilities here.

I suggest you become familiar with it. For example, you often come up with a problem such as how five missing will spades split between East and West. Answer: spades will break 3-2 68 percent of the time, 4-1 28 percent of the time, and 5-0 4 percent of the time.

Category: Exercises: Declarer Play | Tags: , ,

An Instructive Example of Visualizing the Unseen Hands

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What’s known as “counting the hand” in bridge might better be called visualization. Experts don’t actually count. They visualize possible ways each suit originally broke in the unseen hands, and they confirm or adjust that vision as more is learned from the play. For example, say you are declarer in a spade contract with silent opponents. You hold eight spades between you and dummy. You tentatively visualize opponents’ original spade holding as breaking either 3-2 or 2-3 (a 68 percent chance). But you realize that the less friendly breaks (4-1 or 1-4 or 5-0 or 0-5) are also possible (32 percent chance).

You start to draw trumps and find that right hand opponent shows out on the second round. Don’t grimace about the 4-1 break. All the other pairs sitting your way are getting the same unfriendly break. Focus instead on adjusting your vision of the unseen hands: You now know that left hand opponent started with four spades, and you know precisely which spades those are. Also, you recall that right hand opponent was silent during the auction even though she held a singleton spade. Adjust your plan of play based on your new, more accurate vision.

To give you a little visualization exercise “here is a rather extreme, but instructive, example” from Alfred Sheinwold’s Five Weeks to Winning Bridge*:

Alfred1

 

Opening lead is the 10 of diamonds. You have 12 sure tricks. The only possible worry is that clubs don’t break 3-2, and you lose a trick to the jack. You don’t have much of a vision of unseen hands to start with, other than they each contain 13 crummy cards. How are you going to go about visualizing the club suit to eliminate that one little worry?

To get a firm grip on opponents’ original holdings, take your tricks in the other three suits before you tackle clubs:

  • You see West discard diamonds on the second and third spade, so now you know spades were split 1-6 between West and East.
  • You play three rounds of hearts and both follow, so hearts were split either 4-3 or 3-4 between West and East.
  • You see East discard a spade on the third round of diamonds, so diamonds were split 5-2 between West and East.
  • Now you know that West started with one spade, 3 or 4 hearts, five diamonds, and East started with six spades, 4 or 3 hearts. two diamonds. Therefore East has at most two clubs. You play the king and queen of clubs, knowing that ace and 10 in dummy will take the last two trick.

* https://www.amazon.com/Weeks-Winning-Bridge-Alfred-Sheinwold/dp/4871876098

Category: Exercises: Declarer Play | Tags: ,
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