nullve

That's part of lebensohl over (2M)-X-(P) but necessarily over 1N*-(2M), * some 3-point range, e.g. 15-17 where 3m = NAT GF is playable because of partner's narrow range.

A major suit fit is less (more) likely after Teller has shown high (low) shortage. So it seems that 2N as high (low) shortage will wrong-side otherwise attractive notrump contracts more (less) often.

Two-way 1♣ opening based on Scamp's (strong) 1♣ opening: 1♣ = Scamp's 1♣ OR 11-13, either 3334 or 5C(332) 1♣-1♦/♠/N/2♠+: as in Scamp 1♣-1♦; 1♠: includes all 11-13 hands 1♣-1♦; 1♠-1N; P = 11-13 1♣-1♥; 1♠-1N/2♠+: as in Scamp 1♣-1♥; 1♠-2♣/♦/♥ = Scamp's 1♣-2♣/♦/♥, resp. 1♣-1♥; 1N = 11-13 1♣-1♠; 2♣ = 11-13 1♣-1N; 2♦ = 11-13 1♣-2♣/♦/♥ = Scamp's 1♣-1♥; 1♠-2♣/♦/♥, resp. 1♣-2♣; 2♥/3♣ = 11-13, not 3325 (wants to play 3♦ rather than 2♠ opposite 4S5D) 1♣-2♣; 2♠ = 11-13, 3325 (wants to play 2♠ rather than 3♦ opposite 4S5D) 1♣-2♦; 2♠ = 11-13 1♣-2♥; 3♣ = 11-13 1♣-2N/3♣/♦; step 2 = 11-13 (Law-protected but not GF) This should leave the symmetric relay structure intact.

So when do you open 1♠ with only 4?

I've played this in one partnership. The name we (or my partner, who wrote the notes) used was 'Romex spørremeldinger' (lit. 'Romex asking bids').

One often has to apply the Law in situations where one doesn't know, but can only estimate, the number of total trumps. As North I would estimate total trumps to be ~ 16 on this deal.

Aargh, yes. Will edit my post.

Yes, I want to force to game opposite 15 BAL. Do I want to be in game opposite this particular 15 count: KQJ2 AJ2 832 A43? Not really.

2♦ I want to * show 3c support and INV values opposite an unbalanced hand with 5+ S; * force to game opposite 15 BAL.

1st/2nd: P = "normal" OR 11-13, either 3343 or 3352* 1♣ = "16+" unBAL OR 17+ BAL 1♦ = "10-15", either 1-suited w/ 6+ C, 4+C5+M (C never longer) or C+D 2-suiter* 1♥ = "10-15", either 1-suited w/ 6+ H, 4+H5+O (H never longer) or 4H(441) OR 11-13 BAL, 4-5 H 1♠ = "10-15", either 1-suited w/ 6+ S, 4+S5+O (S never longer) or 4144 OR 11-13 BAL, 4-5S2-3H 1N = 14-16 BAL* 2♣ = "10-15", either 1-suited w/ 6+ D or 4+D5+M (D never longer) (...) P-?: P = 0-7, usually BAL 1♣: as in 1st/2nd OR 8-10, BALish** 1♦: as in 1st/2nd OR 11-13, either 3343 or 3352** (...) 1♦-1M; ?: 1N = 2-suited w/ 5+D4+C (C never longer) C+D 2-suiter OR ___? 2♣ = 2-suited w/ 4+D5+C (D never longer) C 1-suiter (...) 2♣-?: P: rare! 2♦ = to play opposite the 1-suited hand 2♥ = INV w/ 5+ H OR any GF ...2♠ = 5+ S ......2N = GAR relay (GF) ......3♣/♦/♥ = NAT NF ......(...) ...2N = 1-suited ......3♣ = GF relay ......3♦/♥ = NF ......(...) ...3♣+ = 5+ H, GAR developments (GF) 2♠ = INV, 5+ S ...P = MIN, 5-H2(3)S ...2N = MIN, 5H1-S ...3♣ = D 1-suiter (and likely 1- S if MIN?) ...3♦ = MAX, 5+ H ......3♥ = 2 H .........3♠ = 5H2S .........3N = 5H1-S .........4♣+ = 6+ H ......3♠ = 6+S1-H .........3N = 5-6H1-S .........(...) ...3♥ = MIN, 6+H2-S ...3♠ = INV, 3 S ...(...) ...4♠ = to play (...) * Alternatively: P = "normal" 1♣ = as above OR 11-13, either 3343 or 3352 or P = "normal" 1♦ = as above OR 11-13, 3343 1N = as above OR 11(12?)-13, 3352 ** Alternatively, 1♦ = as in 1st/2nd OR 11-13, 3343 1N = as in 1st/2nd OR 11-13, 3352

(5332) is balanced but not flat? (In pilun's Symmetric Relay book, flat hands have either (4333) or (4432) shape.)

Form of scoring? Did 2♣ deny three spades? 1♣-(p)-1♠-(X) 2♣-(3♥)-? Calls with their IMO default meanings: P = unable to compete (duh) X = takeout (a misnomer, since partner shouldn't take out without extra shape) 3♠/4♣ = competitive, NF (you can't afford to play these as GF, especially not at MP) 3N = strong suggestion, rarely taken out 4♦ = NAT GF (although I can imagine a pair like Brink - Drijver using the bid as SI+ with 6+ S, or maybe 4♦/♥ as SI+ w/ C SUPP/6+ S, resp.) 4♥ = GF C raise, does not promise a heart control ...4♠ = S control (although I've recenty seen a pair (Brink - Drijver again?) playing what seemed like proxy cuebids in a similar situation, so that e.g. 4♠ = control in opps' suit, hearts) ...(...) 4♠/5♣ = to play 4N = RKC(♣) (there are probably better uses, but...) 5♦/5♥ = ERKC(♣) 5♠ = NAT SI, likely no H control (the #1 reason to torture partner with this bid) 5N = pick a slam 6♣ = to play, could be a sacrfice I'd bid 4N.

? DavidKok claimed that T-Walsh eliminates the need for weak jump shifts. I then gave what to me looks like a counterexample. That's all.

Opener: 18 hcp, 1435 Responder: 3 hcp, 6232 Your T-Walsh auction?