一个网友友情提供的，现在只有英文版，2C不再用于stayman大概是它最鲜明
的特征。
1NT – Keri
This is designed in the context of a strong 1NT of 15-18 but
will be equal
ly applicable for 15-17. The system permits opening of 1NT with a
5 card major
but acknowledges, it will miss some 5-3 major fits.
In the text below openers bids and their explanation will be
in black, res
ponders in blue.
1N - 2C (2C is a puppet to 2D)
2D - ?
· Pass = diamonds in a weak hand
· 2H invite with 4 or 5 hearts
Pass = minimum with 3 or 4 hearts except
2S = only 2 hearts, 4 spades and minimum
2N = only 2 hearts, only 3 spades and minimum
3S = only 2 hearts, 4 spades and maximum
3N = only 2 hearts, only 3 spades and maximum
3C = minimum, 4 cards and prime cards and not 4333
responder can make trial bid here of
3D (or 3H in spade analogue)
3H = maximum with 3 cards and not 4333
3S = only 4 hearts and with 4 spades
3NT = 4H and not 4S
4H = 5 hearts
4H = maximum with 4 cards
3D = maximum with 3 or 4 cards in a 4333
3H = asks for confirmation of 4H, denies 4 spades
3N = x3xx
4H = x4xx
3S = 4S and 4 hearts (to cover opener with 4333)
4H = x4xx
4S = 4x x x
3NT = to play if suitable
4H = 5 hearts
· 2S invite with 4 or 5 spades analogous to 2H
above except that
3H = 25xx and maximum
· 2NT force to game asking for majors and hand
pattern
3C no 5 card major and not 4333
3D asks for 4 card major (and promises one!)
3H shows 4 cards
3NT shows game values, opener can correct to 4S
3S shows 4 spades and slam interest (or play ha
nd)
3NT & 4S to play,
cue bid if better
3S shows 4 cards
3N denies a 4 card major
3H shows 5 card major
3S shows 5 card major
4C shows 4 cards
4D shows 4 cards
3D any 4333
3H = 4 cards (with 5 a fit is known since opener is 4333)
3S = 4 cards
3NT to play
4H to play with fit
4C,D cue with fit and max.
3S = 4 cards (ditto)
3NT = to play (another 4333)
4C shows 4 clubs (use this structure in analogous cases)
4D denies 4 clubs but shows 4 diamonds
4NT shows 15-16 minimum no fits
5NT shows 17-18
4H = club fit and min. (4N = rkc now)
4S = club fit and max (4N=rkc now)
5C,D,H,S = max with 5 clubs and is keycard response
3H = 5 hearts
3S responder has 5 spades
3NT to play
4H to play
4C,D cue with fit and max
3S = 5 spades and 3 hearts
3N = 5 spades and 2 hearts
· 3C invite with 6+ clubs (requires 6-8hcp and decent suit)
(Accept invite will usually have two of: maximum strength, fit
for the minor, primary cards.)
Pass = minimums
new suit = stopper, explore for 3NT or else.
3 new suit = stopper here
3NT stopper in weak suit
4C = no stopper and minimum
5C = singleton/void, maximum
3NT to play
· 3D invite with 6+ diamonds (requires 6-8hcp and
decent suit) Analogou
s to 3C above.
· 3H shows 5+D and 4H and Forcing Game.
new suit = cue agreeing hearts
4H to play
3NT to play
4D sets diamonds and starts cues
· 3S shows 5+D and 4S and FG (analogue to 3H
above)
· 3N slam invite with xx5x
pass with minimums
4N as counter invite
4D to set suit
4C to show 5 clubs as source of tricks
4H,4S show a 5 card major.
· 4C = 6D+4C slam interest
4D sets diamonds
rest agree clubs
· 4D = ?
· 4H,4S,5C shows void with long diamonds and is
voidwood.
1N - 2D transfer 5+H, unless both majors when 4H and 5S, the
major suit is Qx
x x x at best.
2H - ?
· Pass with hearts in a weak hand
· 2S invite+ with 4H and 5S *different* (forcing to 2nt
at least?).
2NT no major fit, minimum
Pass all minimums, so rest are maximum
3C = club fragment
3D = diamond fragment
3H = 5H+5S
3S = 6S+4H
3N = 5422 no slam interest
4N = 5422 with slam interest
3NT no major fit, maximum
3C heart fit, maximum
3H heart fit, minimum
3D spade fit, maximum
3S spade fit, minimum
· 2NT, 5+H & 4 minor, investigate shape and 4-4 minor
fits *different*
3C shows no fit and asks for shortage
3D,S shows single or void there
3H shows single or void in clubs
4C,D 4+ card suit (no major support!) new suit is c
ue including 4H!
3NT 2524 or 2542 with no slam interest.
4H to play in 5-2 fit
4C looking for club fit
4D = diamonds and 2 clubs
4H = only 2 diamonds, club fit, better heart s
uit.
5C = club fit
4D looking for diamond fit.
4H = only 2 diamonds
4C,D shows 2524 and 2542 respectively with slam interest.
4S = cue for diamonds
3D shows fit and asks for minor
3H = 4 clubs
4C sets clubs
3S asks for shape
3N = high shortage
4C = 2-2
4D = low shortage
3S = 4 diamonds, high shortage
3NT = 4 diamonds and 2-2
4C = 4 diamonds and low shortage
Over 3S,3N,4C a bid of 4D sets diamonds (despite H
fit)
4S,5C,5D are voidwood (rkc omitting aces in void)
3H strong support, no interest in minor
new suit is shortage
4H is signoff
3NT as RKC
3S shows 5 card suit, no support for hearts
4H weak support, no slam interest.
· 3C shows 5H & 5C, and FG
3NT = not 3H, most values in other 2 suits
3H = strong preference, good fit in both suits
4H = weak preference
new suit = cue with support for minor (this includes 3S)
· 3D shows 5H & 5D, FG
· 3H invite with 6+ hearts
· jump new suit (3S,4C,4D) shows void and is voidwood
· 3NT game values with x5xx
· 4H game values and 6+ cards
· 4N is 5332 slam invite (for rkc use 1N-4c)
1N - 2D
?
2NT shows HH x ( x) in responders suit and 3 instant
winners.
· 3H is signoff after super-accept
2S/3C/3D shows the cheapest stopper, one honour in reponders suit
and 4 instan
t winners or 3 and
a finesse for the fourth.
· 3H is signoff after super-accept.
3H shows 5 card support
1N - 2H, 2H transfer to spades with 5+S, unless
both majors when 4S and 5H
2S - ?
· pass
· 3H FG with 4S and 5H *different*
1N - 2S, range enquiry but implies no 4 card
major, OR 6+ card one suited w
ith slam interest.
?
2NT all minimums
· new suit is 6+ and is RKC (3N is subsequent signoff)
· jump to game in new suit is to play
· 4NT go on unless absolutely dreadful
3C all maximums as above but need 4C to show clubs 4NT go on if
absolutely max
imum
1N - 2NT transfer to 3C
3C - ?
· Pass with clubs in a weak hand
· 3D FG with minors 5-4 either way
3H,S stopper here but not other major, to explore 3nt and minor
fit.
3NT both majors stopped
4C,D sets minor
· 3H,S FG with 5+C and 4M
· 3N x xx5 with slam interest
· 4C = xx46 and slam interest
· 4D,4H,4S shows void with good clubs and is voidwood.
1N - 3C/3D/3H/3S, FG, with single in next suit. Usually
4441,5m440, 5m431, 6m
331
(this will jump to 5m if 3N not
available). Avoid with 1345 precisely
.
?
· 3NT = strong opposite singleton.
· 3H/3S = offering a 4 card major (perhaps before bidding
3NT so do not bypass it). May
subsequently bid minors naturally if 3N not possible).
Rebid of short suit shows fit, max, void.
· 4C/4D natural with no major and 3N not possible.
· 4H/4S with 5 card major since 3 card support is assured
· Bid Short Suit : slam interest with no wasted values.
new suit = possible trump suit
· Jump in short suit shows 333 in side suits with no wasted values
in splinte
r 4 card suit.
1N - 3C/3D/3H/3S If we play only 5m440 or 4441 (or 6331)
then
?
· cue of shortage = no wasted values in that suit
now responder makes next step bid and
opener sets suits
now responder step bid is RKC for set suit
· bid of suit sets the suit but warns of some wasted values
now responder step bid is RKC for set suit
· 3N is to play and warns of considerable wasted values but 2+
stops.
4C shows slam interest and requires opener to set a
suit
Opener sets suit
(shortage = clubs, 4N = no fit!)
responder step bid is then RKC for set suit.
1N - 3NT to play
1N - 4C transfer to hearts
4N is now RKC
1N - 4D transfer to spades
4N is now RKC
Interference
1N-( X):
if, X is non-penalty then ignore
else, normal newlands escapes (XX->2C or majors;2C->2D
etc)
1N-(2C): X = I was about to bid 2C, bid 2D as normal.
1N-(2D) or higher: Lebensohl
1N-( P)-2C-( X) : assuming this shows clubs
?
· 2D as normal but with a club stop
· Pass no club stopper, then responders XX forces 2D.
· XX is to play with good clubs
pass
2D is to play
other bids have normal meaning, as if opener bid 2D.
1N-( P)-2C-(2D) :
?
· Pass = opener bidding 2D and everything as normal.
· X = penalty
1N-( P)-2C-(2HS3C) :
?
· X = penalty but must have diamonds so responder can run to 3D if
he has the
weak hand.
· Usually pass if cannot double and leave it to responder
when2S,3C,3D would be invite and rest FG (inc. 2NT).
1N-( P)-2D or 2H - ( X) :
?
· pass = 2 in transfer suit;
· transfer = 3;
· XX = 4.
1N-( P)-2S-( X) : presumably this shows spades so
· 2N = min + stop
· 3C = max + stop
· Pass = no stop and
responder XX forces range statement
· XX = play here, I have strong spades
Things to Remember
1N-2C-2D-2NT is a major enquiry
3H,S shows 5 cards
3D shows any 4333
3C shows all others
1N-2D-2H-2NT (and spade analogue) shows a minor is held and asks
for descripti
on
3C shows no fit and asks for singleton
3D shows fit and asks for minor
3M (H in this example) shows strong support and slammy
3OM (S in this example) shows own 5 card suit (no H support)
4M support but no slam interest.
1N-2D-2H-2S is F1 with 4H and 5S
1N-2H-2S-3H is FG with 4S and 5H
This facilitates invitation with 5-4 majors by
1. with 5H and 4S bid 1N-2C-2D-2H and heart fit is found or opener
bids 2S/N
2. with 5S and 4H bid 1N-2D-2H-2S and opener will bid 2N,3H,3S
with min. And 3
C( H), 3D( S), 3N
with max.
Many responder hands with a 5 card major bid better going via
2C-2D-2N rather
than the transfer:
it is the pricipal way of playing 3N rather than 4M.
