nullve

I play "system on" over a 1♠ overcall of my forcing 1♦ opening. In more detail, That may be suboptimal, but at least I tend to know what I'm doing even after several rounds of bidding. To the 3-level (by rebidding 3♥, intending that as a preemptive 4c raise) if 2♣ doesn't promise 6+ H if weak, but to the 4-level (by rebidding 4♥, intending that as preemptive 4c raise) if it does.

Some hand types with clubs are missing.

Really? [hv=pc=n&n=sk5432h52d2ck6532&d=s&v=n&b=15&a=pp?]133|200[/hv] [hv=pc=n&n=sk5432h52d2ck6532&d=s&v=n&b=15&a=ppp1cp1d?]133|200[/hv]

2♦ =

I've checked with predeal south HAKQJT852, DJT532 predeal north DAK hcp(north)==18 and shape(north, 2353 + 3352) at a teaching table with North as dealer on BBO. Opener bid 3♥ over 1♦-1♥; 2N-3♣ each time. [hv=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|nullve,nullve,~~M3367ls9,nullve|md|3SHAKQJT852DJT532C,S96542HD94CAQJ752,SAQH973DAKQ76CKT9,SKJT873H64D8C8643|sv|b|rh||ah|Board%2029|mb|1D|an|Minor%20suit%20opening%20--%203+%20!D;%2011-21%20HCP;%2012-22%20total%20points%20|mb|P|mb|1H|mb|P|mb|2N|an|Jump%20in%20notrump%20--%202-4%20!C;%203-5%20!D;%202-3%20!H;%202-4%20!S;%2018-19%20HCP;%2022-%20total%20points;%20partial%20stop%20in%20!C;%20partial%20stop%20in%20!S%20|mb|P|mb|3D|mb|P|mb|3H|an|2-4%20!C;%203-5%20!D;%203%20!H;%202-4%20!S;%2018-19%20HCP;%2022-%20total%20points;%20partial%20stop%20in%20!C;%20partial%20stop%20in%20!S%20|mb|P|mb|4D|an|No%20explanation%20avppailable|mb|P|mb|5D|an|2-4%20!C;%203-5%20!D;%203%20!H;%202-4%20!S;%2018-19%20HCP;%2022-%20total%20points;%20partial%20stop%20in%20!C;%20partial%20stop%20in%20!S%20|mb|P|mb|7C|mb|P|mb|7D|an|2-4%20!C;%203-5%20!D;%203%20!H;%202-4%20!S;%2019%20HCP;%2022%20total%20points;%20partial%20stop%20in%20!C;%20partial%20stop%20in%20!S%20|mb|P|mb|P|mb|P|pc|D8|pc|D2|pc|D4|pc|DA|pc|D6|mc|13|]400|300[/hv]

Some 2/1 partnerships could conceivably bid 1♦-1♥ 2N-3♥ 4♦*-5♠**. * H fit, ♦A, no ♣A ** Exclusion

GiB plays a version of 2/1 GF that doesn't include Exclusion RKC. GiB won't always let you find about the fifth diamond after 1♦-1♥; 2N. That's too easy: 1♦-1♥ 2N-3♦ 3♥-4♦ 5♦-7♣* 7♦** * meaningless ** the right decision

How about 1♣ = NAT or any 15-20 BAL ... "Swedish" T-Walsh, basically: ...1M-1 = 4+ M ......1M = 3 M or 15-17 BAL .........1♠ = 4(+) S ............1N = (often) 15-17 BAL, 2-3 S and 2-3 H ............2♥ = 15-17 BAL, 4-5 H ............2♠ = often 15-17 BAL, 4-5 S .........1N = to play opposite 15-17 BAL, 2-3 M ............P: often 15-17 BAL, 2-3 M ............2M = 15-17 BAL, 4-5 M ......1N = 18-20 BAL, 2-3 M 1M = 5+ M, but 12-14 if BAL ...1N = NF, does not include any 3c LR ......P = usually 12-14, 5M(332) ......2♣+ = Gazzilli complex (always unBAL, so independent of NT range!) ...2x(x<M) = standard or LR with 3M4+x ......2M = to play opposite the LR ......other: NAT GF 1N = 12-14 BAL, no 5c M ? (Assuming you (an American playing mainly in ACBL events?) are allowed to play T-Walsh (finally!) but not yet 1M-2♣ as "NAT or 3c limit raise".)

Amen!

[hv=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|~~M808544m,~~M136904n,~~M5804ste,~~M1985trl|md|3S875HAKQ2DKJ6CQJ9,SKQT632HT3D9742C7,S94H8DAQT85CA6532,SAJHJ97654D3CKT84|sv|o|rh||ah|Board%201|mb|1D|an|Minor%20suit%20opening%20--%203+%20!D;%2011-21%20HCP;%2012-22%20total%20points%20|mb|1H|an|One-level%20overcall%20--%205+%20!H;%208-17%20HCP;%209-19%20total%20points%20|mb|3N|an|Stopper%20in%20H,%20no%20fit%20in%20D.%20--%204-%20!D;%2013-17%20HCP%20|mb|P|mb|P|mb|P|pc|HT|pc|H8|pc|H9|pc|HA|pc|CQ|pc|C7|pc|CA|pc|C4|pc|DT|pc|D3|pc|D6|pc|D4|pc|D8|pc|HJ|pc|DJ|pc|D9|pc|HK|pc|H3|pc|C5|pc|H4|pc|HQ|pc|S6|pc|C6|pc|H6|pc|DK|pc|D7|pc|DA|pc|C8|pc|DQ|pc|H7|pc|S7|pc|D2|pc|D5|pc|H5|pc|S8|pc|S3|pc|S4|pc|SA|pc|S5|pc|S2|pc|SJ|pc|H2|pc|SQ|pc|S9|pc|SK|pc|C2|pc|CT|pc|CJ|pc|ST|pc|C3|pc|CK|pc|C9|]400|300[/hv]

Not true. [hv=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|~~M3709j33,~~M12373ug,~~M1111h7c,~~M1225nmw|md|3S942HQJT532DT3C54,SQ3HK764DQJ42CKQ8,SJ75H8DAK97CAT732,SAKT86HA9D865CJ96|sv|o|rh||ah|Board%2033|mb|1C|an|Minor%20suit%20opening%20--%203+%20!C;%2011-21%20HCP;%2012-22%20total%20points%20|mb|1S|an|One-level%20overcall%20--%205+%20!S;%208-17%20HCP;%209-19%20total%20points%20|mb|P|mb|2N|an|2-%20!S;%2012-14%20HCP;%20likely%20stop%20in%20!C%20|mb|P|mb|3N|an|5-%20!H;%205-6%20!S;%2013-17%20HCP;%2019-%20total%20points%20|mb|P|mb|P|mb|P|pc|H8|pc|H9|pc|HT|pc|HK|pc|SQ|pc|S5|pc|S8|pc|S2|pc|CK|pc|C2|pc|C6|pc|C4|pc|S3|pc|S7|pc|SA|pc|S9|pc|C9|pc|C5|pc|CQ|pc|CA|pc|DK|pc|D8|pc|D3|pc|D4|pc|C7|pc|CJ|pc|H2|pc|C8|pc|HA|pc|H5|pc|H6|pc|D7|pc|D6|pc|DT|pc|DQ|pc|DA|pc|CT|pc|D5|pc|H3|pc|H7|pc|C3|pc|ST|pc|S4|pc|H4|pc|D9|pc|S6|pc|HQ|pc|DJ|pc|D2|pc|SJ|pc|SK|pc|HJ|]400|300[/hv]

Checking what "basic" GiB would do: [hv=https://www.bridgebase.com/tools/handviewer.html?lin=st||pn|~~M3624sed,~~M4895w59,~~M68838s2,~~M8817inv|md|3SJ75HAKJ64D86CA54,SA642HQ752D97CT93,SKQ8H8DAJT3CK8762,ST93HT93DKQ542CQJ|sv|n|rh||ah|Board%2037|mb|1C|an|Minor%20suit%20opening%20--%203+%20!C;%2011-21%20HCP;%2012-22%20total%20points%20|mb|P|mb|1H|an|One%20over%20one%20--%204+%20!H;%206+%20total%20points%20|mb|P|mb|2C|an|Opener%20rebids%20his%20C%20--%203-%20!H;%203-%20!S;%2011-15%20HCP;%20twice%20rebiddable%20!C;%2012-16%20total%20points%20|mb|P|mb|2D|an|New%20suit%20--%203+%20!D;%204+%20!H;%2012+%20total%20points;%20forcing%20to%203N%20|mb|P|mb|3D|an|4+%20!D;%202-%20!H;%203-%20!S;%2011-15%20HCP;%20twice%20rebiddable%20!C;%2012-16%20total%20points;%20forcing%20to%203N%20|mb|P|mb|3H|an|3+%20!D;%20rebiddable%20!H;%2012+%20total%20points;%20forcing%20to%203N%20|mb|P|mb|3S|an|4+%20!D;%202-%20!H;%203%20!S;%2011-15%20HCP;%20twice%20rebiddable%20!C;%2012-16%20total%20points;%20forcing%20|mb|P|mb|3N|an|3+%20!D;%206-%20!H;%204-%20!S;%2014-21%20HCP;%20rebiddable%20!H%20|mb|P|mb|P|mb|P|pc|D9|pc|DJ|pc|DQ|pc|D8|pc|S3|pc|S7|pc|SA|pc|S8|pc|S6|pc|SK|pc|S9|pc|S5|pc|CK|pc|CJ|pc|C4|pc|C3|pc|H8|pc|HT|pc|HA|pc|H5|pc|HK|pc|H2|pc|D3|pc|H9|pc|CA|pc|C9|pc|C2|pc|CQ|pc|C5|pc|CT|pc|C6|pc|D5|pc|HQ|pc|DT|pc|H3|pc|H6|pc|H7|pc|C7|pc|D4|pc|HJ|pc|D6|pc|D7|pc|DA|pc|DK|pc|C8|pc|D2|pc|H4|pc|S4|pc|SQ|pc|ST|pc|SJ|pc|S2|]400|300[/hv]

Maybe it was just thinking one move ahead (like I've heard some do at chess): 1♣-(P)-1♥-(P) ?

Wow!

So 1N was Comic/Gardener? :)

From the Teams NAOBC KO Semi Final: [hv=https://www.bridgebase.com/tools/handviewer.html?bbo=y&lin=pn%7Cjkrans%2Ckit%2Cokvince%2Cbbramley%7Cst%7C%7Cmd%7C2S249JKH89QD789C36%2CS6QH457KADTJQC9QA%2CS358AH23JD24C24TK%2C%7Crh%7C%7Cah%7CBoard%2012%7Csv%7Cn%7Cmb%7C1C%21%7Can%7Cstr%20art%7Cmb%7Cp%7Cmb%7C2C%7Can%7CGF%2C%205%2B%21D%2C%20no%204M%7Cmb%7Cp%7Cmb%7C2D%21%7Can%7Crelay%7Cmb%7Cp%7Cmb%7C2H%7Can%7Cexactly%204%20%21C%7Cmb%7Cp%7Cmb%7C2S%21%7Can%7Crelay%7Cmb%7Cp%7Cmb%7C3C%7Can%7C2%3D2%3D5%3D4%7Cmb%7Cp%7Cmb%7C3D%21%7Can%7Casks%20%23%20controls%7Cmb%7Cp%7Cmb%7C3S%7Can%7C3%20controls%7Cmb%7Cp%7Cmb%7C4C%7Can%7Casking%7Cmb%7Cp%7Cmb%7C4D%7Can%7C0%20or%20both%20%21DAK%7Cmb%7Cp%7Cmb%7Cp%7Cmb%7Cp%7Cpc%7CD2%7Cpc%7CD3%7Cpc%7CD9%7Cpc%7CDQ%7Cpc%7CDJ%7Cpc%7CD4%7Cpc%7CD5%7Cpc%7CD7%7Cpc%7CC9%7Cpc%7CC2%7Cpc%7CCJ%7Cpc%7CC3%7Cpc%7CH6%7Cpc%7CH9%7Cpc%7CHA%7Cpc%7CH3%7Cpc%7CHK%7Cpc%7CH2%7Cpc%7CHT%7Cpc%7CH8%7Cpc%7CH5%7Cpc%7CHJ%7Cpc%7CDA%7Cpc%7CHQ%7Cpc%7CD6%7Cpc%7CD8%7Cpc%7CDT%7Cpc%7CC4%7Cpc%7CH7%7Cpc%7CS3%7Cpc%7CS7%7Cpc%7CS2%7Cpc%7CH4%7Cpc%7CS5%7Cpc%7CST%7Cpc%7CS4%7Cpc%7CCA%7Cpc%7CCT%7Cpc%7CC5%7Cpc%7CC6%7Cpc%7CCQ%7Cpc%7CCK%7Cpc%7CC7%7Cpc%7CS9%7Cpc%7CS8%7Cmc%7C12%7C]600|450[/hv]

Pass. Yes, you could miss a 26 hcp game if partner has the wrong shape, like 3154. Forcing to game.

FYP :)

I know mikeh likes Reverse Flannery in response to 1m, and Reverse Reverse Flannery = Flannery could be used to solve the analogous problems (and the brand new one, over 1♦-1♠; 1N) when 1♦-1M = "4+ OM". That is also what I do in my (complex, not very natural) system.

Either poorer or more complex than standard follow-ups after 1♦-1M? If so, why? I mean, doesn't the following structure, 1♦-1♥("4+ S"); ?: 1♠ = "4+ H, F1" 1N/2♣/2♦: same as 1N/2♣/2♦ over 1♦-1♥("4+ H") but with majors switched 2♥/2♠: replacing 2♠ over 1♦-1♠("4+ S") 2N+: same as 2N+ over 1♦-1♠ 1♦-1♠("4+ H"); ?: 1N/2♣/2♦: same as 1N/2♣/2♦ over 1♦-1♠("4+ S") but with majors switched 2♥/2N+: same as 2♥/2N+ over 1♦-1♥("4+ H") 2♠ = spade reverse, look about as simple and good (poor) as the standard structure over 1♦-1M? (Having two ways to raise spades (blue part) might weigh up for the awkwardness of the spade reverse (red part).

My solution is, roughly, to * open 1♣ with 4144 and 1♦ with 1444; * play "switched" major suit responses to 1♦, i.e. 1♦-1♥ = "4+ S" (also with 44xx) and 1♦-1♠ = "4+ H" (never with 44xx); * let 1♦-1♥; 1♠ = "hearts" (incl. 1444, any strength).

A trump coup.

Possible explanations of the 5♠ response to RKC, in order of accuracy: 1) 2 or 5 key cards, no void and either the trump queen or compensating trump length 2) 2 or 5 key cards and either the trump queen or compensating trump length 3) 2 or 5 key cards and the trump queen 4) 2 key cards and the trump queen 5) 2 aces and the trump queen I've only heard equivalents of 2)-5) at the table.

I really prefer the non-best hand format. But since being on defence with GiB is so unpopular, how about a format where I or partner gets the best hand?

Spades were not 5-0 but there was still a way to get a near-top.