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Impact system description

#1 User is offline   Impact 

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Posted 2006-September-26, 01:13

In response to akhare's request in Malex 3 thread.

APOLOGIES FOR FOR FORMATTING EARLIER but cut & paste originally

Clearly illegal for many jurisdictions unless open slather, current version:-

SUMMARY OPENING BIDS

Not Vulnerable

Pass=16+ HCP any / 0-4HCP!!
1C = a)13-15 bal
b)10-15 m3(<5 S)
c)10-15 4 S & 5+m
d)10-15 m2
1D =10-15 4+H ,unbal maybe canape
1H = a)6-9 non-MYXO ie not suitable for singlesuited or 2 suited pre-empt
b)10-15 6+C ss
1S =10-15 5+S (<5H)

1NT =10-12 balanced

2C =0-5 any

2D = a)10-15 6+D ss OR But in 4th seat vul, 11-14 with D only
B)5/6-9 6H OR
c)5/6-9 5+S & 5+C
2H = a)ACOL 8PT H But in 4th seat vul, Acol H only
B)5/6-9 6S OR
c)5/6-9 5+C & 5+D
2S = a)ACOL 8PT S OR But in 4th seat vul, Acol S only
b)pre-empt C OR
c)5/6-9 5+D & 5+H
d)solid C & o/s A/K
2NT = a)5/6-9 5+C & 5+H OR but in 4th seat vul, 11-13 with 5+C & 5+D
B)5/6-9 5+D & 5+S
3C = a)pre-empt D OR
b)solid D & o/s A/K but in 4th seat vul, shows 7 card semisolid suit named & A outside

3D = a)pre-empt H OR
b)solid H & o/s A/K but in 4th seat vul, shows 7 card semisolid suit named & A outside
3H = a)pre-empt S OR
b)solid S & o/s A/K but in 4th seat vul. Shows 7 card semisolid suit named & A outside
3S = solid suit, no o/s A/K but in 4th seat vul shows 7 card semisolid suit named & A outside
3NT = a)pre-empt C OR
b)pre-empt D but in 4th seat vul, shows hand TO PLAY

4C = pre-empt H, NAMYATS, 1+ QT o/s
4D = pre-empt S, NAMYATS, 1+ QT o/s
4H = pre-empt
4S = pre-empt
4NT = 5+D & 5+C, < 3 Quick Losers, < 4 L, m suit solidity


VULNERABLE is more traditional

1C= 16+
1D= 10-15 2 or 3 suited
a) 4S & 5+m
:) m3 (<5S)
c) minor 2suiter (m2)
1H= 10-15 4+H (denies m3) also denies 5S unless holding 5+H)
1S= 10-15 5+S (<5H)
1NT=12-15
2C= a) 10-15 6+C singlesuited (ss) OR
B) weak 2 in D OR
c) weak 5+S & 5+H
OTHER as per n/vul scheme


Over every 1 level opening step 1 is relay based on Symmetric principles but opener almost never bids suit held in order to maximise prospect of being dummy.
New non-relay over the multipurpose 1m opening are descriptive but n-f, with higher bids being pre-emptive (noting that if resp hold 44minors there must be at least 8 card fit vul).
Over Major showing bids a) cheapest is relay B) simple new suits are transfers c) jump +1 is singleton raise ie splinter with limit or min GF d) other simple jumps are fit-showing +2= 2way either that suit or highest e) one under double raise is limit f) jump raise pre-empt g) jump raise +1= bal min GF raise h) double jumps are switched void-showing splinters (one under)

Note 7 card majors are only opened at the one level if weak or 7222 assuming the 7222 does not qualify for the solid with no outside A/K or solid with outside A/K. Intermediate 7 card suits with outside values fit the somewhat liberal definition of "Acol 2". The Acol Two could also be a 65 with six + cards in named Major as it takes those hands out of 1-level openings without upgrading to strong opening.

Many unusual treatments including transfer doubles, specialised cues : the complete system including defences to absolutely everything is about 50 typed pages of theory with some sequences completed (but no examples).

If anyone seeks more information, please respond in the thread or PM to me.
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#2 User is offline   whereagles 

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Posted 2006-September-26, 04:32

Hum.. sorry, but the layout is a bit unreadable ;)
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#3 User is offline   Impact 

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Posted 2006-September-26, 18:50

Hope layout improved but cut and paste showed up differently; the emoticons were not intentional - they appeared at random for a bracketed second letter in the alphabet...
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