1 Diamond Opening:
6+ diamonds or 4+-5+ in minors, 12-19 HCP (no 4 in major if 19 HCP or less), or 20-21 HCP any distribution ("Almost Acol")
1H = 0-3 HCP, any distribution, negative
1S= 4-? HCP, waiting, unable to bid 1NT or 2C/D
1NT = 16-19 HCP
2C/D= 12-15 HCP natural
2H/S 3C/D 5+cards, 20-21 HCP
2NT balanced 20-21 HCP
1NT= 8-10 HCP, both majors stopped
2C/D= 12-15 HCP
2H/S= 20-21 HCP 5+ cards
2NT= 16+ HCP forcing
3C/D= 15-16 HCP invitational
2C/2D= 10+ HCP, 4+ cards
2H/S= 20-21 HCP 5+ cards
2NT= 15+ HCP forcing
3C/D= 12-14 HCP invitational
2H/S= 6 cards, invitational
3NT= limit with majors stopped
3 and 4 level responses = preemptive – correct C to D with 6+ diamonds