skjaeran

4NT should definitely be natural here IMO. I'm just too strong for that and will try 6♣.

I'd bid 4♥ directly.

I think this is a fair overcall but I have not seen vulnerable overcalls this light in many textbooks. I don't think there have been many books written on overcalling in the past 5 years or so. Overcalls have become more aggressive - bets place to look is the World Championship books. I think Justin needs to write a textbook on overcalling. You'll have to make it illegal for conservative bidders and children then. :)

How can you not with a 10 card suit?!? Well, if I had 12 of them I'd probably bid 6♥. Then again, I should probably call for the director, since we'd be playing with a defect deck.....

Playing in an Indie (or with a pick-up) I'd double with this hand. With my regular I'd have a 2♦ transfer available here, wtp? :)

Clear 2♥ - 1NT is disgusting.

With my most regular partner we play (1♣) - 2♦ as a wjo in a major suit. (2♣ is natural and 2M is weak/strong Michaels). With anyone else 2♦ is a wjo.

Why are you adding in 3rd seat here? The thread discuss 4th seat only. 3rd seat and 4th seat are very different positions with totally different tactics.

Some use a 3NT rebid over 1♥ - 1♠ to show a GF with 3-6(+) in the majors.

Those digits are easily remembered as 2.7 Ibsen Ibsen (Henrik Ibsen was born in 1828). :(

True for you, but probably not for most. There is nothing in the Laws that prevents agreements after irregularities. However the ACBL says, I believe agreements are legal in the UK. Paul I'm pretty sure there's a WBF LC enterpretation in a minute outlawing such agreements worldwide (under 1997 law). I don't understand WHY, but so be it. It's easy to see why. 1NT (2♠), playing standard lebensohl you have no way to sign off in hearts and get partner to declare. Oh wait unless you "accidentally" bid 2♦ then correct it to 3♦ as a transfer! I suspect there are thousands of ways to take advantage like this. Of course it's illegal to do on purpose, but just try to prove it. So I think it's best to make this sort of agreement illegal. Sure. It's obvious (to me) that you can't have agreement after your own sides insufficient bids (or bids out of turn etc.). But I can't see any real reason why you shouldn't be allowed such agreements after opponents such bids. You're allowed to accept such bids. It's not logical (for me) that you're not allowed to take full advantage of the situation.

3NT. Can miss 4♠, but rebidding 3♠ is more apt to miss 3NT. Partner will bid 4♥ when that's where we belong. On the weak hand pass is more than obvious.

6♥! That's a bid I'd not even consider.....

True for you, but probably not for most. There is nothing in the Laws that prevents agreements after irregularities. However the ACBL says, I believe agreements are legal in the UK. Paul I'm pretty sure there's a WBF LC enterpretation in a minute outlawing such agreements worldwide (under 1997 law). I don't understand WHY, but so be it.

That's a 2♣ overcall to me, but I couldn't have much less than this. 3♣ at red might be ugly.

I concede that pass MIGHT be the winning bid. But I'm a 2♠ bidder anyway.

It might of course turn out wrong, but I can't imagine doing anything but bid 5♥ here.

I miscounted the hand initially, so 1NT isn't possible for me either. I prefer 2♦ slightly over 2♣.

This is very rare, but it happens. Even rarer is winning the first trick with the 4 after RHO showed out. That's happened to me twice! Lars Eide - a strong norwegian player and the father of the Eide brothers (international junior/schhols players) once made 3NT by leading the ♥2 from hand at trick two, winning the singleton 4 in dummy. Sure, LHO was asleep. This was the only possible way to get to 9 tricks. (LHO had opened 1♥ and Lars' holding of a 7-bagger was unknown.)

I dunno. In a competitive auction, it seems difficult to impossible to determine if UI has been passed (depending upon how confident the partner is about what kind of error it was). The previous Law, you assumed mechanical failure (the person reached for NX, and pulled out (N-1)X). This one, the director has to make a guess. How is this going to work, anyways? Bidding goes 1NT P 1♥. Director rules no additional information for a change to 2♦. Auction continues P 2♥ P 4♥, makes an overtrick on bad defense. The defenders appeal, and win. 1♥ revealed considerably more information than 2♦ did. So now what? 1♥ making 5? 4♥ played the other way, and assume that the defenders get all the defensive plays right this time? A+/-? Split score? How can this be taken care of? TD error IMO, A+ for both sides. You can't allow replacing 1♥ with 2♦, since 2♦ can contain hands not included in 1♥ (whether it was a 1♥ opening or a 1♥ response to a presumed 1m opening). 2♦ could be bid on 0 hcp - a hand well outside what 1♥ shows.

Nice elopement hand. They come up at times.

2♦. I might rebid 1NT with a non-regular. (1NT show 5332 18-19 with my regulars.)

I'd open this 1♦. I'll rebid 2♦ even after a 1-over-1 and overcall by RHO. I don't play wk2♦ non-vul. I'm too strong for 3♦ in 1st seat.

Excuse me, but you're not entirely correct here. If you sit down and do a proper analysis of IMP games, I'm pretty sure you'll find out that those teams that consistently do best at the partscore level are those teams who overall do well. It's true you can't compare MP and IMP here. But if you consistently manage to go plus on the partscore deals, you're going to be a huge winner overall. Dont' care if your score is +90, +110, +120 or whatever, +50 is also a good score compared to -110. If you can score +110 in a 3m contract you don't care at all if +120 or +140 is possible. If your teammates have a plus score, you win the board with 4-6 IMPs. Because of frequency, you'll add up enough IMPs at the partscore level to be able to stand missing a very tough slam. Almost anyone can bid the games you should reach at IMPs, and most of the slams. The OP hand is mainly about competing for the partscore. Game is just possible, but not a big issue when deciding to open the hand or pass.

Double would be a very descriptive call here..... :P