Articlesβ€ΊDuplicate Tournamentsβ€Ί05/16/2023 Tuesday Game Post-mortem Session

05/16/2023 Tuesday Game Post-mortem Session

72 minutes

Tue, May 16, 2023Mine UsluelDuplicate TournamentsNews

Thanks for playing in the Wolpert Bridge Duplicate game. We hope you enjoyed the game.

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Stefan DavidSep 3, 2023

In the situation of board 4, what is the difference between 2 diamonds and 2NT? Presumably, both bids show the same suits (the unbid suits), i.e. clubs and spades.

Gavin WolpertTeacherSep 5, 2023

One of them allows you to stop in 2 of the major. So i basically always use the 2 of opener's suit cuebid unless I have extreme distribution.

Stan ChristieJun 6, 2023

and again on Bd 8. West passes with 16HCP.

Stan ChristieJun 6, 2023

More odd bidding on Bd3. West bids 3D after I have opened 1D and has only 3HCP and xxxx in Diamonds

Gavin WolpertTeacherJun 6, 2023

Thanks this is all related to the same bug which we are working on.

Stan ChristieJun 6, 2023

B1. A bug? I played this as the first board trying out the new play feature. North passed with 15HCP. https://1drv.ms/i/s!AmGaRHJzv2E2jtMG905ij-lvHRvEIw?e=4KIO0W

Mine UsluelTeacherJun 6, 2023

Thanks for reporting this issue. We appreciate it. We will look into it.

Kate WaltersMay 21, 2023

B3. Why is N limited to 12 to 14? Say W has 12 for their double, S has 11 = 23, Can't N have the rest? Does E need at least a few points to respond? Thanks, Gavin, for such a nice review of the duplicate game. At first I thought 8 boards wasn't enough, but I am really liking the way you have time now to go into each hand.

Gavin WolpertTeacherMay 21, 2023

North limited their hand with the 2H rebid. They do not have enough to jump to 3H. With 15 they would have opened 1NT.

Cheryl RougeMay 20, 2023

Can you explain why having points in the opp's suit is good for defense but not good for offense? (Bd 3) Thanks!!

Gavin WolpertTeacherMay 21, 2023edited

Honors in the opponents suits are likely tricks on defense and they do nothing to build long suit tricks on offense. Take a simple situation. You have two suits AKQ. ---- 32 T987 ---- 6543 With 9 points in the opponents suit we will take 3 tricks on offense and the same 3 tricks on defense. If you are lucky you will build a slow trick in your 8 card fit. 765 --- 43 AKQ2 --- T987 Now we reverse these two suits and we have our 9 points in our long suit. On defense, we have a maximum of 2 tricks (if the opponents have a singleton, we may only have 1 trick). On offense we have 4 tricks. The basic idea is points in our long suits help us make our contracts but often dont take any tricks on defense.

Cheryl RougeMay 21, 2023↳ replying to Gavin Wolpert

Thanks so much for your response and very helpful analysis of all the hands. I just discovered your website recently and have enjoyed a couple of lessons so far. Keep up the great work!

cherry mclaughlinMay 18, 2023

Thank you Gavin. You are awesome. I appreciate listening to your thinking. Thank you to Mine also. Gratefully, Cherry

GULU MAHTANEYMay 17, 2023

gavin, hi ! board 2 > is it better for partner to play C2 when partner leads CQ or to overtake CQ with CK and play DQ ?

Gavin WolpertTeacherMay 18, 2023

I dont see how south can know to overtake and play a diamond unless their partner raises clubs. Partner could easily have a doubleton club and we need to cash them right away. It isn't clear to south that diamonds is the suit that has urgency. If south plays the 2, north can see that their king of heart stopper gives them time to shift to diamonds and even if that is wrong, we can get back to playing clubs later.

MΓ‘tΓ© JΓ‘nosikMay 17, 2023

Board 5 https://tinyurl.com/2ps9lbos what does X mean from S and what would be 3D and 3H? and what should I bid after the double?

Gavin WolpertTeacherMay 18, 2023edited

X is takeout / value showing. It just means, "I don't want to pass and am not sure about our direction. You would have at least an invitational hand to double in that spot. A direct 3D or 3H would just be competitive. This isnt a maximal double situation because we don't know we have a fit. I would bid 3β™  with your hand after double. You want to accept game but aren't sure which game to accept to. 3β™  shows your spade values.

Betty ColemanMay 16, 2023

Thanks again for the lesson. Board 7. The bidding went 2D, X, 4D, I X thinking I was asking partner to bid there suit. Sho/uld I have bid 4S?

Gavin WolpertTeacherMay 16, 2023edited

Double of 4D by your hand is "I have a good hand too partner. I don't have a clear 4 of a major bid myself". You may double with 4-4 in the majors, but you would also double with a random balanced opening hand like 3325 or 3334. If you have a lot of points, you have no choice but to let partner know. With your hand I dont think it will matter which major you play. You have at least 9 spades so I would choose spades myself and not risk partner passing my double.

Max KrawczykMay 16, 2023edited

Thanks Gavin, for the lesson. I have a question about board 8. I think you were a big advocate of passing after 1H - x, even with 8 points and two 5 card suits. I am still unsure if it is right to pass and hide our strength and other suits. Is our partner always going to be making the right decision after our pass? for all they know we could have a zero count. I know you said we can always double to get in again after 1S, but the example you showed where W has to jump to 3H...are we really supposed to raise to 4 in that situation? I feel like I surely would have passed 1H - x - p -1S; 3H...if we respond something it is much easier for opener to just bid 4H directly

Gavin WolpertTeacherMay 16, 2023edited

I have no fear of getting shut out. I am going to make a takeout double over 1S or 2S at my next turn. This is definitely a better way to bid this hand. Every time partner has 4-5 in the majors and extra values the opponents are in serious trouble. I will make a takeout double of spades and partner will pass. By bidding 1NT you are encouraging partner to compete in hearts. I was taught you need a doubleton in support of partner for 1M (X) 1NT. I don't play 1NT natural (I use transfers after 1MX) and havent for a long time so I don't know if thats still the accepted practice (1NT promising 2 card support), but I am confident that it used to be. Whenever you have a singleton in partner's 5 card major, your hand will be better off defending unless you have a fit. Pass followed by takeout double solves everything. I don't think bidding 1NT makes it any easier. If partner jumps to 3H all by themselves (after we pass over the double) it is a clear cut raise with our hand. If I made it sound like it wasnt clear it was just me being empathetic for how this is a very unique spot that is new for people.

Jon RansomMay 16, 2023

Great lesson, thank you so much!