Viking Precision 2007
2ª-Preempt
Pass=Weak
or trap
DBL=Takeout
2NT=15-18HcP,bal
3§=6+§,NF
3¨=6+¨,NF
3©=5+©,NF
3ª=ASK
stopper
3ª-3NT=Stop
OK
4©=6+©,Signoff
4ª=2-suiter
4ª-5§¨©=Pass/correct
4NT=Strong
2-suiter
4NT-5§=ASK
distrib
4NT-5§-5¨=©+¨
4NT-5§-5©=©+§
4NT-5§-5ª=§+¨