Bocchi-Duboin
1§-1¨=4+HcP,4+©
1©=*11-16HcP,3©,unbal
*14-15HcP,4©+5§
*MAX,bal,4cd
*1-2 NV:15-17HcP,bal
*1-2 V:12-14HcP,bal
* 3 :12-14HcP,bal
* 4 :15-17HcP,bal
1©-1ª=#Invite-Relay
1©-1NT=Signoff
1©-2§=Signoff
1©-2¨=#GF,Relay
1©-2©=5+©,weak
1©-2ª=5+ª,weak
1NT=#Invite-Relay
2©=4©,bal,minimum
*1-2 NV:15-17HcP,bal
*1-2 V:12-14HcP,bal
* 3 :12-14HcP,bal
* 4 :15-17HcP,bal
2NT=*18+HcP,4©
+ 4+§
*18+HcP,6+§