pilowsky, on 2021-January-02, 14:13, said:
In this post, the question concerns the meaning of the alerted 3NT, but your advice about the opening bid is well-taken. Thank you.
pilowsky, on 2021-January-03, 23:57, said:
What do you suggest as an alternative? There seems to be an entrenched dislike for Benjamin two's. What does one open with hands that look like these?:
- K&R (AK983 AJT43 A2 A) = 24.45 DK 22- or
- K&R (AK983 A9843 A2 A) = 23.20 DK = 20 or worse
- K&R (AK983 A9843 A2 2) = 19.80 DK = 16
These hands give newbies like me nightmares. Too big, wrong shape, very annoying.
I was planning to not discuss general opening philosophy after that first remark, but here we go anyway.
It is a boring truism that no bridge system is perfect, and all have downsides. To the best of my knowledge historically bidding systems have set out to minimise the chance of missing a making game - this is for example why traditionally people opened with 13 points (since if neither player in a partnership has 13 or more points, the partnership has 24 at most and probably does not belong in game), and by choosing to respond with at least 6 (or 7 a century ago) this means that if we hold at least ~20 points we need a stronger bid, because partner may pass with 5 while game is on (and that's why we have a 20-22 or 20-21 2NT). You can immediately try to improve on this by including shape into your evaluations, or using some more accurate point count method than the Milton Work count.
However, I think it is much more important to acknowledge that the guiding thought in all this is at best a good approximation of what we want out of a bidding system. Bidding and making games is very important for a good IMP score, but not to the extent that all else should be sacrificed for it. Some other desiderata of a system include winning the partscore battle, investigating slams, putting pressure on the opponents and helping partner on defence by describing your hand or asking for a lead. While constructive game-going auctions are one of the most important aspects of most bidding systems, it is valuable to realise that with limited bidding space you, as the master of your bidding system, are trading some of your ability to achieve this particular goal against all the others. And in a world of decreasing return on investments it is good (percentage) bridge to at some point say "Stop, this is getting
too constructive. If I miss a game every once in a blue moon so be it, but I'll be getting all those other goals in return so it will be a good trade-off."
All of the above applies to the extreme with strong shapely hands. If you open 2
♣ you will certainly get to game if partner has an ace or so, but in return you are behind on all other goals by not bidding your suit(s). Cheeky opponents may even preempt your auction, leaving you with impossible guesses at the 3- or 4-level. Furthermore, by introducing your shape, instead of your strength, it is much easier for partner to take action in contested auctions. And if you are staring at a singleton or void the odds of the auction becoming contested are overwhelming, especially with aggressive bidders all around. This last point supports opening on the 1-level in a second way: if the opponents intervene then you will get to bid again, so game need not be missed. I've happily opened 1
♦ on a 23-count and all was well (on that particular hand my LHO was kind enough to jump to 2
♠).
In general I think informing partner of your hand shape should take priority over informing partner of your strength (within limits, but still). This argument is typically used by aggressive bidders who want to get in early and often, but it also applies to very strong hands. If you really have some 2-suited battleship of a hand you more than likely need all the bidding space available to inform partner that their two kings and out are priceless, but only if they are in the correct suits. On balance opening hands like that on the 1-level (and risking missing game) beats opening them with some artificial 2-level bid (and risking not having space to show your shape). This is part of the reason why I disagree with the solutions offered by blackshoe, Zelandakh and even mycroft's suggestion for a short list of possible agreements to capture hands like this. mycroft correctly points out that you should not stretch to use a 2
♣ gadget, but I think it is wise to go even further and stretch to avoid it. On balance it is good to risk missing game if that means you get to show your shape at the 1-level. Most conventions introduced to solve this problem at the 2-level, including a wide set of response structures to a strong 2
♣, are likely anti-percentage, and I prefer accepting that some hands are troublesome to bid over playing those conventions (and in return I get to play other methods at the 2-level).