pilowsky Posted December 8, 2022 Report Share Posted December 8, 2022 [hv=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|~~v3fakebot,~~v3fakebot,pilowsky,~~v3fakebot|md|1SAQ872HKQJDQ52CA3,SKJT6H8DJ94C96542,S54HAT97652DKT3CJ,S93H43DA876CKQT87|sv|b|rh||ah|Board%207|mb|1S|an|Major%20suit%20opening%20--%205+%20!S;%2011-21%20HCP;%2012-22%20total%20points|mb|P|mb|1N|an|Forcing%20one%20notrump%20--%203-%20!S;%206+%20HCP;%2012-%20total%20points|mb|P|mb|3N|an|Game%20in%20notrump%20--%202-4%20!C;%202-4%20!D;%202-4%20!H;%205%20!S;%2019-21%20HCP;%2022-%20total%20points|mb|P|mb|6H|an|6+%20!H;%203-%20!S;%2011+%20HCP;%2012%20total%20points|mb|P|mb|P|mb|P|pc|CK|pc|CA|pc|C2|pc|CJ|pc|HK|pc|H8|pc|H2|pc|H4|pc|HQ|pc|D4|pc|H5|pc|H3|pc|C3|pc|C4|pc|H6|pc|C8|pc|S5|pc|S3|pc|SQ|pc|SK|pc|DJ|pc|DK|pc|DA|pc|D2|pc|D6|pc|DQ|pc|D9|pc|D3|mc|11|]400|300| GIB appears to have acquired some bad habits from Argine.I'm guessing this is the reason why my rebid here is 2♠ with 5332?[/hv] Quote Link to comment Share on other sites More sharing options...
smerriman Posted December 8, 2022 Report Share Posted December 8, 2022 GIB doesn't have any bids to investigate slam scientifically over 3NT. So the only way to end up at slam is to bid it immediately. I calculate 6♥ is makeable (double dummy, of course) opposite 80% of all the possible hands you might hold for 3NT. So this seems OK to me. 1 Quote Link to comment Share on other sites More sharing options...
pilowsky Posted December 8, 2022 Author Report Share Posted December 8, 2022 GIB doesn't have any bids to investigate slam scientifically over 3NT. So the only way to end up at slam is to bid it immediately. I calculate 6♥ is makeable (double dummy, of course) opposite 80% of all the possible hands you might hold for 3NT. So this seems OK to me. Useful to know. Hence my second point, to avoid the 20% of fails, and assuming I'm playing 'sensible' GIB 2/1, is 2♠ the correct rebid here? And for that matter how about IRL? Quote Link to comment Share on other sites More sharing options...
smerriman Posted December 8, 2022 Report Share Posted December 8, 2022 2♠ is non-forcing, showing 6 spades and a weak hand. You definitely don't want to do that! With standard methods, 3NT seems normal. Edit - actually, my double dummy sim was based on the definition of 3NT shown, but that definition seems to be problematic, since the majority of such hands would have opened 2NT.. so GIB is at fault here, as per usual. Quote Link to comment Share on other sites More sharing options...
tazbierek Posted December 8, 2022 Report Share Posted December 8, 2022 what exactly is that 3NT here ? Quote Link to comment Share on other sites More sharing options...
mw64ahw Posted December 8, 2022 Report Share Posted December 8, 2022 Non-GIB bidding going via 2♣ forcing I end up in 6♥ so not a bad call that makes on a poor lead or K♠ dropping/finessed. 3NT is a reasonable rebid for me. Quote Link to comment Share on other sites More sharing options...
pilowsky Posted December 8, 2022 Author Report Share Posted December 8, 2022 6♥-1 was the modal result by far.The 'winning' auction seemed to be 1♠-1NT-2♦(transfer)-2♥-4♥I'm guessing that any upgraders or downgraders might have reached 4♥ via a Texas transfer, but this came from the DL1 so it's hard to be sure. Quote Link to comment Share on other sites More sharing options...
smerriman Posted December 9, 2022 Report Share Posted December 9, 2022 The 'winning' auction seemed to be 1♠-1NT-2♦(transfer non-forcing natural 3+ diamonds) 2♥-4♥FYP. Quote Link to comment Share on other sites More sharing options...
pilowsky Posted December 9, 2022 Author Report Share Posted December 9, 2022 FYP. Close - I was wrong - here's the link 1S-1NT-2NT-3D!-3H-4H6 people in this contract - 86.4%13 in 6H(N or S) - 34.21%and oddly 1 in 5H-1 for 34.21% Quote Link to comment Share on other sites More sharing options...
steve2005 Posted December 9, 2022 Report Share Posted December 9, 2022 2NT is the correct bid instead of 2NTGib is full of it-any hand that fits Gibs definition of 3N would pretty well have opened 2NTin 2/1 3NT is solid spades I believe but what do I know?! Quote Link to comment Share on other sites More sharing options...
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