The design of the responses already bears competitive bidding in mind. We
somehow ignore the meaning of overcalls to deal with artificial and psychic
bids. We reorder major suit bids with Transfer Walsh to get a “support double”
by accepting the transfer.
We treat 1♣ as a weak notrump more than a club opening. Club support is not
very effective. We have a transfer scheme for all levels below 3NT.
1♦♥♠: Transfer to the next strain. The low-level cuebid of 1♠ lets opener
declare notrump.
From 2Q to 3♥: A weak or strong transfer of 6+ cards.
3♠: Transfer Gambling 3NT.
Natural 1NT is not very useful after a double. We rebrand it as transfer.
1♣-(X)-
-
XX
NF BAL G/T, 10+
1♦!
TRF, 7+, 4+♥
1♥!
TRF, 7+, 4+♠
1♠!
TRF, 7+, 5+♣
1NT!
TRF, 7+, 5+♦
2♣♦♥♠
PRE, 3–9, 6+#
2NT!
TRF, PRE 7+♣ or FG 6+♣
3♣!
TRF, PRE 7+♦ or FG 6+♦
3♦!
TRF, PRE 7+♥ or FG 6+♥
3♥!
TRF, PRE 7+♠ or FG 6+♠
3♠!
Gambling, SOL 7+ suit with no stopper outside
3NT!
Gambling, SOL 7+ suit with one stopper outside
When RHO bids a suit, natural notrump from Polish Club 2005 right-sides
the contract.
1♣-(1Y)-
-
X!
TRF, 7+, 4+ next suit
1♥!
TRF, 7+, 4+♠
1♠!
TRF to 1NT, 7+
1NT
BAL INV, 9–11, 2–3♠, 2–3♥, 2–5♦, 2–5♣
2X
INV+, 10+, 5+#
2YZ!
TRF, PRE or INV+, 6+ next suit
2♠!
TRF, PRE 7+♣ or FG 6+♣
2NT
FG with stopper
3♣!
TRF, PRE 7+♦ or FG 6+♦
3♦!
TRF, PRE 7+♥ or FG 6+♥
3♥!
TRF, PRE 7+♠ or FG 6+♠
3♠!
Gambling, SOL 7+ suit without stopper
3NT!
Gambling, SOL 7+ suit with stopper
Of course 1♣-(1♠)-X is a negative double. Therefore, 2♥ becomes negative free
bid. This modern adjunct finds more marginal 4♥ and puts pressure on the
opponents by threatening to play 2♥. Moreover, we lose 1♠ that asks for
stopper. The direct cuebid 2♠ has to take care of that.
Transfer to major suits has the same meaning as major suit responses to 1♣.
Opener usually bids as if responder had bid the suit naturally. However, opener
has a new option: accept the transfer at 1M. This option steals the support
double when advancer passes.
Here I only list support rebids for brevity. The complete set of responses is
at 1♣-1M.
1♣-(1♦)-X-
7+, 4+♥
1♥
SUPP, 12–17, 3=♥
2♦!
FG, 3+♥
2♥
MIN, 12–14, 4=♥
3♥
INV, 15–17, 4+♥
1♣-(1♦)-1♥-
1♣-(1♥)-X-
7+, 4+♠
1♠
SUPP, 12–17, 3=♠
2♦!
FG, 3+♠
2♠
MIN, 12–14, 4=♠
3♠
INV, 15–17, 4+♠
The cuebid is a useful tool to ask for stopper by ceding notrump declaration. I
decide to have a dual meaning 2♥, similar to 4SF. It asks for a stopper by
default. Rebidding the suit shows a natural suit.
There is a debate whether free bids are forcing. I prefer negative free bids
for major suits and standard forcing free bids for minor suits. I believe this
set of agreements maximizes our chances to reach 4♥ and 3NT.
4=♥
5=♥
6=♥
7+♥
7–9
X
X/2♥
2♥
3♦
10–11
X
2♥
2♥
4♥
FG
X
X
3♦
3♦
Invitation is suspectible to interference. Therefore, invitation requires
quick actions.
To make best use of non-forcing 2♥, include weaker hands with longer or
better suit.
The direct 4♥ not only deters inferference but also splits the range of 3♦.