[awm]

Here's a sort of funny alternate method, assuming that 1♦ denies a balanced hand:

1♥ = no 5M; like a forcing notrump
... 1♠ = natural
... 1N = 4♥, not strong enough to reverse
... 2x = natural, 2♦ will be six-plus
1♠ = 5+♠
... 1N = 4♥, not strong enough to reverse
... 2x = natural, 2♦ will be six-plus
1N = 5+♥
... 2x = natural, 2♦ can be five if 4153/4252
2♣+ = natural or whatever

[Antoine Fourrière]

If 1♦ is unbalanced, here are my mullings:


1♦ __ 0-4HCP
::: 1♥ no 5cM 5+
::: 1♠ 5H 4+
::: 1N 5S 4-9
::: 2♣ 5S 10+
::: 2♦ 6H 4-8 or 6S 9-11
::: 2♥ 6H 9-11 or 6S 4-8
::: 2♠ 5S4H 10-12
::: 2N 5S5H 4-7


1♦ 1♥
1♠ two-suiter with longer diamonds
1N weak canapé in clubs or strong three-suiter with clubs
2♣ diamond one-suiter
2♦ 4441 (4450), F1
2♥ 1444 (0454) wk
2♠ 4144 (4054) wk

1♦ 1♥
1♠ 1N 5-10
::: 2♣ natural or 13+ bal
::: 2♦ 11-12 bal (opener may pass with a minimum and four clubs)
::: 2♥+ diamonds

1♦ 1♥
1♠ 1N
__ 11-15 w 4C
2♣ 4S, F1
2♦ 11-15 w 4H
2♥ 16+ w 4H
2♠+ 16+ w 4C

1♦ 1♥
1♠ 2♣
2♦ 4H (2♥ by responder shows clubs, 2N is forcing)
2♥ 4S (2♠ by responder shows clubs, 2N is forcing)
2♠ 4C (2N is forcing)


1♦ 1♠(=♥)
1N clubs, possibly canapé
2♣ 5D 4S or 4144
2♦ 6D
2♥ only two hearts
2♠ three or four hearts with a nice minimum
3♥ three hearts with a bad minimum


1♦ 1N(=♠)
__ weakish with clubs
2♣ 5D 4H or 1444, F1
2♦ 6D
2♥ strongish with clubs
2♠ only two spades
2N three or four spades with a nice minimum
3♠ three spades with a bad minimum


1♦ 2♣(=♠)
2♦ five diamonds, no fit
2♥ canapé in clubs, no fit
2♠ 1444, F1
2N+ fit for spades

A two-level rebid of responder's major is invitational with only five cards.

[NickRW]

awm, on Mar 9 2010, 07:50 PM, said:

Here's a sort of funny alternate method, assuming that 1♦ denies a balanced hand:

Yes, 4=2=4=3 for opener is a problem for my scheme against a 1N response showing 5 hearts.

In practice probably nothing much bad will happen if opener starts with 1♣ on that shape.

[blahonga]

When 1♦ denies a balanced hand I like to play natural responses but transfer rebids by opener.

1♦ - 1♥

1♠ nat
1NT 4+♣
2♣ 6+♦
2♦ four card support, 11-12 or 16+. opener bids on with 16+
2♥ three card support, min
2♠ nat, strong with three card support
2NT onesuited with at most 2♥
3♣ nat, strong with three card support
3♦ nat, with three card support
3♥ four card support, 13-15

Differences after 1♦ - 1♠

2♣ 6+♦ or extra strength and 4♥ (might be 1444 or 0445)
2♦ min with 4♥