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Four hearts

I suspect the error was somewhere between the 4♣ bid and the leap to 5♦ response ;)

There are 16 total trumps in the worst-case scnenario that partner is 45xx or 56xx, so 3♥ is actually Law-protected with that hand.

I will frequently bid 1NT with a 6 card minor (for the reasons MikeH's partner mentions), but not always, and ♥xx seems to be a poor sign - especially with (strangely enough) bad clubs. AJTxxx plays one-loser with a card opposite; Kxxxxx (even KT9xxx) is likely to only score long tricks as trumps. But our rule - not a standard K/S rule, to my knowledge, but it's what we play - is "if you've opened an overstrength preempt 1m, rebid it at your first opportunity if it's sane to do so." Frankly, because otherwise we assume a strong NT as responder. We are willing to push safety a little bit to avoid -530s, so in the following auction, 3♣.

For me a b d e are pens, c is takeout, abde scream 5 card trump holding to me. The problem with playing them for takeout is that you put a LOT of pressure on partner to reopen with a double with shapely (sub)minimums and have to be able to pass smoothly with whopping penalty doubles.

I find this harder than most - no surprise there. For me 2 ♥ is a pretty awful hand on this sequence. For example if I had xx xxxx KQxx xxx I would bid 3 ♥ preemptive not 2 ♥. To bid only 2 ♥ I would have less of course. There are hands that bid 2 ♥ that I can make game xx Axxx xxx xxxx for example, so passing makes no sense either. I think I bid 4 ♥ and hope but with no great confidence it will make. Whilst there may be hands that make slam good most (almost all) of those that are mentioned above are far too good for 2 ♥ for me.

Not sure what you're misunderstanding. Seems to match the definition precisely:

Me: Dealer: E Vul: NS North (you): 6-AJ96-KJT-QJT86 Auction so far: E: P S: 1S W: P Your turn. Assume Standard American. ChatGPT: Based on your hand and the auction so far, it seems like your partnership is facing a competitive auction. Your partner has opened the bidding with 1 spade and East has passed. As North, you have a strong distributional hand with a long suit in spades and a solid trump suit. Here are some possible bids and their meanings: Pass: You could pass, but this is not recommended as your hand is too strong to pass at this point. Additionally, you have a good spade suit and would like to compete for the contract. 2NT: This bid shows a balanced hand with 20-21 high-card points. However, this bid does not accurately describe your hand as it is very distributional. 3S: This is the best bid for your hand. It shows a preemptive raise to 3 spades with a long suit and approximately 6-9 points. Since your hand is very distributional, this bid accurately describes your hand and also puts pressure on the opponents. It is possible that your partnership can make a game contract in spades, or at least force the opponents to bid higher than they would like. Therefore, I recommend that you bid 3S. Me: But North's (your) hand is 6-AJ96-KJT-QJT86. ChatGPT: I apologize for the mistake in my previous response. Based on your actual hand of 6-AJ96-KJT-QJT86 and the auction so far, here are some possible bids and their meanings: Pass: This is a legitimate option as you do not have a strong enough hand to make a bid at this point. However, you do have a long spade suit, so if you decide to pass, you should be prepared to defend against the opponents' bid. 2NT: This bid shows a balanced hand with 20-21 high-card points. However, your hand is not balanced, so this bid is not appropriate. 3S: This bid shows a preemptive raise to 3 spades with a long suit and approximately 6-9 points. Your hand fits this description well, so 3S is a good option. This bid puts pressure on the opponents and helps your partnership to find the right level of the contract. 4S: This bid shows a strong preemptive raise to 4 spades with a long suit and approximately 10-12 points. Your hand is close to this description, so 4S is also a possibility. This bid can make it more difficult for the opponents to find their best contract, and it also increases the chance of making a game contract in spades. Therefore, I recommend that you bid 3S or 4S, depending on your playing style and partnership agreements. Me: How many spades do you have? ChatGPT: I apologize for the confusion in my previous response. As an AI language model, I don't have any cards or access to the current state of the game. In the North hand, the number of spades is 6, as indicated by the first digit in the hand notation. Me: No, it's the six of spades. ChatGPT: I apologize for my mistake. Thank you for correcting me. With the six of spades, your hand has five spades remaining. Me: No, the six of spades is a singleton. ChatGPT: Thank you for correcting me again. With the six of spades as a singleton, your hand has a total of four spades. Me: That's nonsense. ChatGPT: I apologize for the confusion. As an AI language model, I misunderstood your previous message. It is impossible for a 6 to be both a singleton and a part of a 6-card suit. I am sorry for the incorrect responses. To answer your original question, the North hand has a 6-card spade suit. Me: No, it doesn't. ChatGPT: I apologize for my mistake. It seems that I misunderstood the hand distribution in the North hand. Based on the corrected information you provided, the North hand has only one spade - the Ace of spades. The correct hand distribution for the North hand is: North (you): A-J-9-6 ♠︎ A ♥︎ - ♦︎ J-10 ♣︎ Q-J-10-8-6 I hope this information helps with your bidding decision. Me: Only the club holding is correct. ChatGPT: I apologize for my previous mistakes. It seems that I am having difficulty understanding the information provided. To better assist you, could you please provide me with the complete hand distribution for all four hands? Once I have this information, I can provide a more accurate response to your bidding question. Me: No, I will only give you North's hand: ♠6 ♥AJ96 ♦KJT ♣QJT86. ChatGPT: Thank you for providing the correct hand for North. With this distribution, North has a 5-card spade suit, not 6 as I previously stated. Given the auction so far, where East has passed and South has bid 1S, you have a decision to make. Your hand is relatively weak, but you do have a good long suit in spades. One possible bid is to pass, which would indicate that you do not have the strength or distribution to make a bid at the 2-level. Alternatively, you could bid 2S to indicate a weak hand with a long spade suit, although this could potentially be risky if your partner does not have support for spades. Another option is to make a bid of 3S, which would indicate a preemptive raise with a long spade suit and approximately 6-9 points. This bid puts pressure on the opponents and makes it more difficult for them to find their best contract. However, if your partner has minimum strength and no support for spades, this could result in a difficult contract to make. Ultimately, your bidding decision depends on your partnership agreements and your personal playing style. However, given your hand distribution and the current auction, passing or bidding 3S are the most reasonable options. Me: North's hand: S:6 H:AJ96 D:KJT C:QJT86 ChatGPT: Thank you for confirming North's hand. With this hand, North has a singleton spade and a good distribution in clubs. Here are some possible bids and their meanings: Pass: This is a legitimate option as you do not have a strong enough hand to make a bid at this point. However, you do have a long spade suit, so if you decide to pass, you should be prepared to defend against the opponents' bid. 2C: This bid shows a strong club suit with approximately 23+ points. However, this bid is not appropriate with your North hand. 2NT: This bid shows a balanced hand with 20-21 high-card points. However, your hand is not balanced, so this bid is not appropriate. 3C: This bid shows a preemptive raise to 3 clubs with a long suit and approximately 6-9 points. Your hand fits this description well, so 3C is a good option. This bid puts pressure on the opponents and helps your partnership to find the right level of the contract. 4C: This bid shows a strong preemptive raise to 4 clubs with a long suit and approximately 10-12 points. Your hand is close to this description, so 4C is also a possibility. This bid can make it more difficult for the opponents to find their best contract, and it also increases the chance of making a game contract in clubs. Therefore, I recommend that you bid 3C or 4C, depending on your playing style and partnership agreements. Me: What hand does North have? ChatGPT: I apologize for my mistake in my previous response. Based on the corrected hand distribution you provided, North has a singleton spade and a 5-card club suit. The correct hand distribution for North is: S: 6 H: AJ96 D: KJT C: QJT86 I hope this corrected information helps with your bidding decision. Me: Yes, this is North's hand. How many hearts does North have? ChatGPT: North has four hearts - the Ace, Jack, 9, and 6. Me: How many diamonds? ChatGPT: North has three diamonds - the King, Jack, and 10. Me: How many clubs? ChatGPT: North has five clubs - the Queen, Jack, 10, 8, and 6. Me: Correct. How many high card points does North have? ChatGPT: North has 12 high card points (HCP) based on the following distribution and honor cards: Ace of Hearts: 4 HCP Jack of Hearts: 1 HCP King of Diamonds: 3 HCP Jack of Diamonds: 1 HCP Ten of Diamonds: 1 HCP Queen of Clubs: 3 HCP Therefore, the total HCP for North's hand is 12. Me: Then what is your bid in this position? ChatGPT: As a language model, I don't have a personal preference for bidding nor the ability to make independent decisions based on my own judgment. However, based on the hand distribution and North's 12 high card points, there are a few options to consider. Since East has passed and your partner South has opened the bidding with 1S, one possible option for you with your five-card club suit is to bid 2C, which would show a strong club suit with around 23+ high card points. However, with North's 12 points, this bid may not be strong enough and could potentially mislead your partner. Alternatively, with a relatively weak hand, another option is to pass and wait for your partner to make another bid. If your partner bids 2H or 2NT, you could potentially support them with a bid of 3C to show your five-card club suit. Ultimately, the bidding decision depends on your partnership agreements and personal playing style. However, in this situation, passing or bidding 2C or 3C are reasonable options to consider. Me: Assume you have agreed to play Standard American. What do you bid? ChatGPT: As North, with a singleton spade and a five-card club suit, I would consider bidding 3C, which would show a preemptive raise to 3 clubs with a long suit and approximately 6-9 points. This bid will put pressure on the opponents and will help our partnership find the right level of the contract. Since our hand is relatively weak, a higher bid like 4C, which shows a strong preemptive raise to 4 clubs with a long suit and approximately 10-12 points, may not be appropriate in this situation. However, the final bidding decision also depends on our partnership agreement and playing style. If we have different agreements or a different approach to bidding, we may choose a different bid. Me: I don't want to be reminded that the decision depends on partnership agreement and playing style. I want you to choose a call with the hand I gave you. ChatGPT: I apologize for any confusion. Based on the hand you provided, I would choose to bid 3C as North.

[hv=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=ZZ%7C%7Cpn%7Cpilowsky%2CRobot%2CRobot%2CRobot%7Cst%7C%7Cmd%7C3SAQJHKQDAJCK98652%2CS763HA9632DQ5C743%2CSK85H75DK9743CAQJ%2CST942HJT84DT862CT%7Csv%7C0%7Cah%7CBoard%201%7Cmb%7C1N%7Can%7C2%2B%21C%3B%202%2B%21D%3B%202%2B%21H%3B%202%2B%21S%3B%20HCP%2012-14%3B%20balanced%7Cmb%7CP%7Cmb%7C2S%21%7Can%7C5%2B%21C%3B%20HCP%20No%20indication%3B%20Transfer%20to%20%21C.%20-%20Forcing%7Cmb%7CP%7Cmb%7C3C%21%7Can%7C2%2B%21C%3B%202%2B%21D%3B%202%2B%21H%3B%202%2B%21S%3B%20HCP%2012-14%3B%20forced%20-%20Non%20forcing%7Cmb%7CP%7Cmb%7C4N%21%7Can%7C5%21C%3B%202-4%21D%3B%201-3%21H%3B%201-3%21S%3B%20HCP%2018-19%3B%20quantitative%20invitation%20to%20slam%20-%20Non%20forcing%7Cmb%7CP%7Cmb%7C6D%7Can%7C2%2B%21C%3B%203%2B%21D%3B%202%2B%21H%3B%202%2B%21S%3B%20HCP%2013-14%3B%20fit%7Cmb%7CP%7Cmb%7C6N%7Can%7C5%21C%3B%202-4%21D%3B%201-3%21H%3B%201-3%21S%3B%20HCP%2018-19%3B%20to%20play%7Cmb%7CP%7Cmb%7CP%7Cmb%7CP%7Cpc%7CST%7Cpc%7CSJ%7Cpc%7CS6%7Cpc%7CSK%7Cpc%7CCA%7Cpc%7CCT%7Cpc%7CC2%7Cpc%7CC3%7Cpc%7CCQ%7Cpc%7CH8%7Cpc%7CC5%7Cpc%7CC4%7Cpc%7CCJ%7Cpc%7CH4%7Cpc%7CC6%7Cpc%7CC7%7Cpc%7CH7%7Cpc%7CHT%7Cpc%7CHK%7Cpc%7CHA%7Cpc%7CS7%7Cpc%7CS5%7Cpc%7CS4%7Cpc%7CSQ%7Cmc%7C12%7C]400|300| After I bid 4NT - which apparently means "quantitative invitation to slam - Non forcing". Argine responds by telling me "6♦ blah blah blah - fit". But a fit in what? [/hv]

Another interesting question is, what would Double show here?