2021 April MSC

[Masse24]

Contest deadline change: Beginning with the May MSC contest, the deadline for entering solutions will be at the end of the calendar month that is two months prior to the contest month. The deadline for the May MSC contest is March 31 at 11:59 p.m. (ET).


APRIL 2021 MSC

Deadline: MARCH 10 at 9:00 a.m. (ET)

Submit your APRIL MSC responses here: The Bridge World - MASTER SOLVERS CLUB

BWS 2017 System: BWS 2017
BWS 2017 POLLS, CHANGES AND ADDITIONS: BWS 2017 - Polls, Changes, and Additions

• Bridge World Standard 2017 (BWS or BWS2017) is effective beginning with the January 2017 Master Solvers' Club problems. This page shows (1) the results of the panelist polls that were used to adjust the system; and (2) the changes in and the additions to Bridge World Standard 2001 (BWS2001) that were made.
  In the listings of the questions and answers, an asterisk indicates the BWS2001 agreement; the proportion of the expert votes for each item, rounded to the nearest percent, is shown in brackets.

IAC Forum MSC Scores

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[blubayou]

We have had had success  this winter leaving in doubles of opps' 3-bids without any trump stack, and for now,  problems A and C I will add to that pile.  Problem C seems TOO much to resemble...a recent puzzle that i couldn't locate.
Problem B  seemed like a complete horror until I realized that HEART SUPPORT IS OFF THE TABLE! Somebody tell me that support doubles are used pretty-much regardless of strength, hence partner's big hand includes 0-2 hearts only?.  Therefore, we can concentrate on finding the right strain among Notrump and either of the minors.  Passing Lurker's raise around then making some big bid may work better than a cue or jump right now -- maybe.  { I LIKE this hand, now that I realize we won't be having to play it in hearts)
                                                        ---PASS?--
PROBLEM D:>> It's nice to hear that both "2D" and "3D"  are not forcing (how strange).  Otherwise, we would be stuck with the choice between a single raise and passing.  It almost always happens that when I raise an overcall on Q-x,  partner competes to 3 Spades, thinking he is following the LAW (or fudging by one length-card) and we go down instead of the opps doing so.  So, I am pleased to call my lead,  and come back with 2 Spades later, if the other players don't blow on past that spot.
                                   --- 2 DIAMONDS---
Problem E:>>   One of the more fun problems this month!  Partner has Axxxx, Qxxxx, --, Qxx   or he has Axxxx, Qx, --, Qxxxxx--Doesn't she!?  Returning her cue-bid will smoke out which, after which we will raise 5 Hearts to six,  or convert 5S to 6 Clubs.   Sorry about the grand slam missed, partner:(
                                   --- 5 DIAMONDS ---
PROBLEM F:>>  A second auction that includes opener's failure to give a support double? Given that, our "do something intelligent" double seems just dandy  [ F1 = YES ].  We need Ken to construct a hand for partner a hand that PASSED on round 2 (this is not forcing!!), and now has made a big bid.  She should not have good stuff and 6+ good clubs or she would have a 3C bid earlier.  He should not have a Heart Stack, or he would exercise the penalty 'option'.  Maybe he has a fairly sketchy reverse into diamonds?  So far,  I am stuck with this idea. Now I need help to decide whether we're worth 6 Diamonds,  or only five, or give her more chance for her to show twice-delayed Spade support (via 5 Hearts). I really cannot see this 4NT  bidder delivering more than nor less than  the spade king, and both minor Ace-Queens, whatever her distribution turns out to be.--hmmmm
                                  --- F2 - VERY undecided---
PROBLEM G:>>   My glass is half-empty today;  Will rebid as if my HQ is a small card rather than jump-shift in either of those minors.  Somebody talk me out of this plan.  Three days later, I am still seeing loss of a club, a heart, and 2 spades ---if pard is inclined to drop our 3 Spade rebid, so no game-force for me.
                                       ---3 Spades --
PROBLEM H:>>   This pile is almost TOO yummy full of defensive tricks!   And partner may well  have a button or two, to boot.  But it will be misery to sluff on the inevitable four rounds of spades after a passive [spade] start.  I can almost taste a crippled  King or Jack in hearts being brought down if i start with the heart ace.   Madness--I know:)
                                       ---Heart ACE--

[peuco]

First ideas, may change one or two

A. Pass going for a plus better than a partial
B. 4C A good suit worth showing it now
C. Pass same as A.
D. Pass maybe i can show minors later
E. 5D
F. Yes/5D If that 4NT bid is not rkc i change partner
G. 3S but i miss Gazzilli
H. C 10  seems the best shot at not giving a trick

[blubayou]

It is heartwarming to see Frank liking the return cue-bid on problem E. I feared this was too 'dainty' to attract much attention, but I hope not.
   On the other hand, concerning PROBLEM F... deciding partner, who left opps in 2 Hearts one round ago, now hauling out 'Old Black' now that we show approximately an opening bid  is more shocking than the rather shocking interpretation that has first occurred to me, and that I am still hanging on to.  Somebody give a thought, please, to what strength is good for the "action double" we made on round two -- assuming you agree with that double [Is this fairly normal, leaving out the excellent spade suit, or have we extras to bid, in a non-spade direction?]

[ccr3]

I think F 4nt is choose your minor. Regardless of whether it's Blackwood or UN NT, Diamonds is safe no matter which way you go.

[kenberg]

Problem F: I confess that the X would never occur to me but I think it is a good idea, trusting that it will be taken as showing a good hand.
n has denied holding three spades so presumably he would, over the X, now bid 3S if he held two.

So how about giving N a 1=3=4=5 shape?

Give him a decent hand. At the time he passed 2H he has heard his partner bid 1S after 1C-Pass. So as far as he knows, partner could have a six count.  So he passes. Now, then, after E bids 3H, S doubles. I guess N can now forget about S having a six count or anything like a six count.

So now what? With N holding the stiff spade K I can see him now bidding 3S but let's say he has the spade deuce. S has forced him to do something and, if he just had a bare opener, he will just try his best. But he could easily have some extra stuff, not enough to bd 3m in either m directly over 2H, but enough for game after partner has made this strength showing double.

Which game should they go for? N decides to ask South's opinion:  4NT

Maybe S's biggest problem is are they cold for a slam. Take it cool, man. 5D.

[blubayou]

PROBLEM F, Phase Two:>>  I don't get how partner can launch into Blackwood at this point into the auction (maybe she has 4+ fat diamonds and, logically, trusts our double will include 4 of them?) , but if that is her plan, then my TWO minor kings will justify a 2-aces reply.  I.E.  5 .   Since that is my favored bid now anyway,  5    it shall be!  It's lucky the bridge world doesn't create 3-part quiz problems,  so I don't have to decide what comes next if 5H gets "5 " from her.  
                                            ----  F:  Yes/ 5 Hearts ---

[Masse24]

PROBLEM F: Yes / 5

The first half of this two-parter asks if we agree with the double. Do we? I’ll go with the “Yes” option.

4NT is not Blackwood. And it’s not an invite, since with that hand (18-19 or so) partner rebids 2NT over 2 . (I find it difficult to picture a hand that passed 2 with some 1=3=4=5 that now upgrades to a quantitative jump to 4NT.) Partner obviously does not have three spades since there was no support double. Could he have two spades? Possibly. But with two little ones he would not bother to tell us at the four level. It’s also unlikely he has Kx since he might very well show the honor doubleton having first denied three.

So 4NT is minors, longer clubs, you pick partner. Something like 0=2=5=6.

I’ll go low with 5 .

[Masse24]

April guesses:

PROBLEM A: Pass. Crapshoot. I see three perfectly viable choices. This may change.
PROBLEM B: 4 . Support partner. Change from my initial 4 . Partner has all sorts of ways to support hearts. Attempting to do so with 2 would be rare.
PROBLEM C: 4 . Will correct 4 to 4 .
PROBLEM D: 2 . Suit development of the minors will be slow in . As others have mentioned, I can mention my doubleton later if given the opportunity.
PROBLEM E: 5 . This hand—“got their suit controlled?”
PROBLEM F: Yes / 5 . Rationale above.
PROBLEM G: 2 . Just shy of a jump-shift.
PROBLEM H: T. I hate lead problems.

All of the above is subject to change.

[jcreech]

Initial toiughts.

PROBLEM A: Pass. i have my bids.  I don't have anything else to say.  If partner wants to punish, I'll take the plus and hope it is enough.

PROBLEM B: Pass.  Partner put on the game force, and my primary responsibility was to keep the auction open.  Should I bid the clubs?  Maybe, but partner needs to clarify the cue.  If he wants to take a piece of 3 , I will pass; otherwise I listen.

PROBLEM C: Pass.  This should beat the partscore contracts, and may lose to game contracts (which may not always make).  I will go for the plus results.

PROBLEM D: 2 ,  Let's go with the clue and bid one of my minors.  2 is a bit of a lead director, and I can always go back to support spades if it goes 2 back to me.

PROBLEM E: 5 . Partner is asking about my suit, but has no clue about my strength.  My problem is the opponent's suit; this should ask for a control.

PROBLEM F: Yes / 5 . What is 4NT?  I think it asks for a choice in the minors, so I will choose.

PROBLEM G: 3 .  I am not sure whether to over or underbid here.  I am the uncertainty of the stiff Q from a jump shift.  I am afraid of two of a minor or 3 being passed out when game is on.  I do not want to unilaterally bid 3NT or 4 .  I also do not want to manufacture a jump shift into a three-card suit.  I think 3 is the slight underbid I will make, and leave my slight overbid of 3NT on the shelf.

PROBLEM H: 7.  The majors are in front of me, while the minors behind, so I will try hitting partner's length and go passive.

[Masse24]

PROBLEM B: Pass.  Partner put on the game force, and my primary responsibility was to keep the auction open.  Should I bid the clubs?  Maybe, but partner needs to clarify the cue.  If he wants to take a piece of 3 , I will pass; otherwise I listen.

Really a tough one, at least for me. We're in a force, so I can pass. But does bidding something over 3 imply more than pass does? Or does it simply say, I will wait for you to clarify (usually long diamonds on this auction). This is my question and the one I'm sure the panel will cover for us.

More think required! 
 

[ccr3]

Problem A: Pass      Close but hope to cash in for the reward.
Problem B: 4 C       Partner has no idea if I have anything more than 6 pts. Didn't finish describing my hand.
Problem C: Pass        Hope again to pick up the marbles. No where to go.
Problem D: 2D          If this is a trap, I fell for it hook, line and sinker. If it weren't for the foot note I'd bid 2 S.
Problem E:  5D         Still vacillating: 5H or 5D. Does my partner have spades and clubs?
Problem F:  5D          Very comfortable thinking this is unusual NT, name my better minor.
Problem G: 3S           No problem here. Dismiss the H queen, 17 pts, what I would do at the table.
Problem H:  C 10       No hesitation here. Least likely to lose a trick.   

[peuco]

Problem F. To all those who think that 4NT asks for a minor. Why does North simply not bid D, 4 or 5 to show his suit? I think Jock has a point in showing 2 KCs

[Masse24]

Problem F. To all those who think that 4NT asks for a minor. Why does North simply not bid D, 4 or 5 to show his suit?

Because:

• He has a weak 5=6 hand,
• 4 could be passed,
• 5 bypasses 5 , which is quite possibly the best resting place,
• It is my value showing double that gives partner the permission to show the suit he could not previously show at the three-level.

Maybe . . . -- xx -- AQ652 -- A98732 ?
At least that is how I interpret this auction. But we'll find out in a week! 

So slam is possible. I'm just not brave enough to go hunting for it.

[thornbury]

PROBLEM A: 3 Notrump
PROBLEM B: Pass
PROBLEM C: Pass
PROBLEM D: Pass
PROBLEM E: 6 Hearts
PROBLEM F: Yes | 5 Diamonds
PROBLEM G: 3 Spades
PROBLEM H: Club 2