mikestar13 Posted February 2, 2012 Report Share Posted February 2, 2012 Been actually trying out Kaplan Inversion in ACBL Mid-chart events and it's been more of a problem than I anticipated. I've often encountered a simple and very effective defense:1♥-1♠-(X) showing spades--fourth hand doubles on crap with spades that would pass 1♥-1NT forcing. Have others run into similar experiences with KI? I now wonder if the tradeoffs are worth it and I'd like to hear from other more expert players. Quote Link to comment Share on other sites More sharing options...
wank Posted February 2, 2012 Report Share Posted February 2, 2012 play 1♠ blued on a 3-3 fit a few times and the opps will start to behave Quote Link to comment Share on other sites More sharing options...
phil_20686 Posted February 2, 2012 Report Share Posted February 2, 2012 Been actually trying out Kaplan Inversion in ACBL Mid-chart events and it's been more of a problem than I anticipated. I've often encountered a simple and very effective defense:1♥-1♠-(X) showing spades--fourth hand doubles on crap with spades that would pass 1♥-1NT forcing. Have others run into similar experiences with KI? I now wonder if the tradeoffs are worth it and I'd like to hear from other more expert players. Played it for a while. Hated it. Quote Link to comment Share on other sites More sharing options...
fromageGB Posted February 2, 2012 Report Share Posted February 2, 2012 Played it for quite a while now. Love it. Getting across the length of the 5 card spade suit in one hit is worth far more than the rare times you get problems. If RHO is going to X 1♠ to show spades, the chances are he is also going to double a non-KI 1NT to show spades. I have a regular other partner who does not like KI, and we sometimes find ourselves making the wrong guess when responder has 5. Quote Link to comment Share on other sites More sharing options...
fromageGB Posted February 2, 2012 Report Share Posted February 2, 2012 play 1♠ blued on a 3-3 fit a few times and the opps will start to behaveIt will be a 4-3 fit on a good day. Quote Link to comment Share on other sites More sharing options...
MickyB Posted February 2, 2012 Report Share Posted February 2, 2012 I remember a top player [Martel?] saying he didn't like KI for this reason. I am unconvinced, many bid 1H-P-1N-2S fairly aggressively, and as Wank says, doubling 1S isn't risk free. Personally, I don't like KI because I think the extra space is more important when responder shows spades than when responder denies spades, although it is somewhat system dependent - KI makes sense if you play Flannery, for example. Quote Link to comment Share on other sites More sharing options...
Gerben42 Posted February 2, 2012 Report Share Posted February 2, 2012 No, KI doesn't play sense when you play Flannery as you don't need it (1♠ already shows 5 cards). I play it whilst not playing Flannery and I like it. I really dislike 1♥ - 1N with 4522 hands. Times that opponents have used 1♥ p 1♠ X to their advantage so far: Zero. Besides if you respond light there is an advantage taking 1NT away from them in the auction 1♥ - 1N. Opener can bid 2♠ or even 3♠ MUCH more often after a 4th seat Dbl (which cannot show a strong NT and both minors at the same time) Quote Link to comment Share on other sites More sharing options...
Free Posted February 2, 2012 Report Share Posted February 2, 2012 I've played it, didn't have that much trouble with it. Quote Link to comment Share on other sites More sharing options...
MickyB Posted February 2, 2012 Report Share Posted February 2, 2012 No, KI doesn't play sense when you play Flannery as you don't need it (1♠ already shows 5 cards). Fair enough, I see you have put more thought into the matter than I have B-) 1 Quote Link to comment Share on other sites More sharing options...
JLOGIC Posted February 2, 2012 Report Share Posted February 2, 2012 Most people seem to play over KI that X=takeout of hearts anyways, despite our recommended defense being X=spades, 1N=takeout of hearts (in fact, my partner recommends that, I think having a natural 1N overcall against us is more important). But the same thing applies anyways, it's nice to be able to screw them when they have a natural 1N overcall and you can steal with 1H p 1N in standard. I mean, yes it's a downside of KI, I don't remember losing any boards because of it but it's possible I forgot. I can't imagine it's a huge deal. Quote Link to comment Share on other sites More sharing options...
mikestar13 Posted February 3, 2012 Author Report Share Posted February 3, 2012 Thanks everyone. Perhaps I've run into some opps who are over-conservative with their 2♠ overcalls in 1♥-1NTF sequences and it has skewed my results. Quote Link to comment Share on other sites More sharing options...
benlessard Posted February 3, 2012 Report Share Posted February 3, 2012 The upside of KI are just so huge that even if you did hit a bad run and lose a couple of board you will all win them back in a fairly short time IMO. esp at MP. Quote Link to comment Share on other sites More sharing options...
bluecalm Posted February 3, 2012 Report Share Posted February 3, 2012 I've never played that.I am curious what is the standard way to bid after 1♠.One system I saw is that 1NT is Hxx or four of them and otherwise you bid 2m (or 2D with 2-5-3-3 and 2C natural or strong or w/e). In such system I really don't like bypassing 1NT. I imagine it's not a problem at imps but what about MP's ? Or maybe there are other solutions to this problem ? Quote Link to comment Share on other sites More sharing options...
fromageGB Posted February 3, 2012 Report Share Posted February 3, 2012 I've never played that.I am curious what is the standard way to bid after 1♠.One system I saw is that 1NT is Hxx or four of them and otherwise you bid 2m (or 2D with 2-5-3-3 and 2C natural or strong or w/e). In such system I really don't like bypassing 1NT. I imagine it's not a problem at imps but what about MP's ? Or maybe there are other solutions to this problem ?My way is probably not standard, but I like to ignore minor holdings (playing an artificial 2♣ anyway), and concentrate on the majors. Similar to yours above, but reverse the NT/♦ meanings.1NT = any 12-14 without something to say in the majors2♣ = most 15+ hands, those not qualifying for a specific bid > 2♥2♦ = 4 spades2♥ = 6 heartsSo I don't bypass 1NT, which is a useful natural bid. Of course it's all a matter of judgement. With a low side suit doubleton and a good Hxx there's nothing to stop you treating it as 4 spades. Incidentally, you could say that another advantage of KI is that you can play in 1NT more often. Quote Link to comment Share on other sites More sharing options...
Poky Posted February 19, 2012 Report Share Posted February 19, 2012 Excellent convention! Never met a problem after 1♥-pass-1♠. Just make it sure 1♠ is up to 11 HCP (bidding 2♣ with a balanced hand containing spades). Quote Link to comment Share on other sites More sharing options...
fromageGB Posted February 20, 2012 Report Share Posted February 20, 2012 Just make it sure 1♠ is up to 11 HCP (bidding 2♣ with a balanced hand containing spades).Are you saying responder initially replies 2♣ with a 12 count? I am happy to reply 1♠ with game hands (it is forcing), not just up to 11, and use a possibly artificial 2-bid for the 16+ hands, but the strength limits of your 1♠ has little bearing on the efficacy of using KI : a worthwhile swap. Quote Link to comment Share on other sites More sharing options...
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