http://www.gg.caltech.edu/~jeff/system/tswine.html
We
play a variation of Hyashi/SWINE, called, without any particularly
good reason, Twisted swine. (There's a very old joke with
the punch line "twisted intestines." Don't ask for the
joke.)
We
use this after strong or weak notrumps.
1NT-(Dbl)-?
- Pass
= forces a redouble, promising either
-
+ 
,
or
-
+ 
,
or
-
a
penalty redouble
-
After
redouble,
-
2
=
+
-
2
=
+
-
Pass
= business
-
Opener
is allowed to compete after this action if he has length in
diamonds; he may double RHO's bid hoping that the Pass was
penalties as long has he has four or more diamonds. (And the
ability to double naturally, of course.)
Once
the penalty redouble is exposed, we are in a force at the
2-level only. Immediate doubles are penalty at any level.
- Rdbl
= puppet to 2,
shows a single-suiter
-
After
2,
-
Pass
= clubs
-
2,
2
= natural, one suited
-
2
= weak spade single-suited runout
-
3any
= strong, forcing, natural 1-suiter
- 2
=
and a major
-
Responses:
-
2
= natural
-
2
= pass or correct
-
Pass
of a double is to play
- 2
=
+
- 2
=
+
- 2
= 6,
non-awful hand, can handle raise in comp
- 2NT
= some strong hand, usually two suited (never happens)
- 3any
= preemptive
- 3NT
= to play, probably gambling, but has enough to expect
advancer to pull
Responder
can show a 3-suiter short in clubs by redoubling twice. 4333 hands
are sometimes shown this way. Responder can show a 3-suiter short
in diamonds via Rdbl..2...Rdbl.
In
general, redoubles are takeout except after the business pass.
They can be on hands that have psyched; if we want to play
somewhere, we play it just doubled.
If
opener bids an "impossible" suit, it's to play and
natural, not fitted. Responder is not expected to correct. It's
usually a six- or seven-card suit or a possible psych.
We
will psych responses even after a double if we have a good place
to run. If opener chooses a suit and responder overrides into a
different suit, that suggests a psych. (It's unclear which
action was the psych (both?) but opener cannot correct.)
We
will once in awhile psych without a place to go, praying to find a
non-doomed spot, especially against a good pair who we hope play
takeout doubles. Down seven white undoubled in the 2-1 fit is
probably better than being doubled if responder is broke.
We
won't generally psych after a strong notrump, but are quite prone
to it after a 10-12. Sometimes, confusion will be our epitaph.
...or escape.
